This electric braking device (1) has a first curved surface on at least one of a pressing surface (14) of a linear motion part (11) and a pressed surface (32) of a piston (30), and has a second curved surface in a range in which a connection member (50) engaged with the first engagement part (31) and the second engagement part (13) engages with the first engagement part (31) so as to swing so that the linear motion axis of the piston (30) is inclined.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/16 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake
A braking device (100) comprises: a hydraulic-pressure generating device (20) including an electric cylinder (51) having an electric motor; a braking actuator (70) having a retention valve (74); and a control device (200). The control device (200) is configured to derive a target rotation angle for the electric motor by feedback control based on the deviation between a servo-pressure detection value and a target servo pressure, and to drive the electric motor on the basis of the target rotation angle. The control device (200) is further configured so that in the situation where the braking actuator (70) is operated by braking control attendant on closure of the retention valve (74), the control device (200) lowers the feedback control gain compared to the situation where the braking actuator is not operated.
B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
B60T 8/44 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device
B60T 13/13 - Systems using booster hydraulically combined with master cylinder with additional direct hydraulic output from booster to brake circuit
B60T 13/18 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs with control of pump output delivery
An electric braking device includes a transmission mechanism including an input gear configured to input rotation of a motor shaft member and an output gear configured to be rotatable in response to rotation of the input gear and transmit the rotation to an actuator unit. The electric braking device includes a circuit unit including a circuit board and mounting components mounted on the circuit board. In the electric braking device, the circuit board and an electric motor are disposed such that a virtual plane parallel to the circuit board intersects an axial direction of the motor shaft member. In the electric braking device, the output gear is disposed so as to intersect a specific plane P2 that is a plane passing through the circuit unit among virtual planes parallel to the circuit board.
B60T 8/17 - Using electrical or electronic regulation means to control braking
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
A driving assistance device executes an assistance control for assisting traveling of a vehicle by causing a vehicle body speed to track a target vehicle body speed through adjustment of a driving force and a braking force of the vehicle. The driving assistance device includes a target vehicle body speed setting unit configured to set the target vehicle body speed. The driving assistance device includes a disturbance detection unit configured to detect a disturbance part present on a travel path. The target vehicle body speed setting unit adjusts the target vehicle body speed according to an accelerating operation amount that is an operation amount of an accelerating operation member operated by a driver of the vehicle when the disturbance part is not detected, and does not reflect the accelerating operation amount on the target vehicle body speed when the disturbance part is detected.
A braking control device includes a fluid pump driven by an electric motor via a coupling part, a differential pressure valve provided in a fluid path connecting a discharge part and an intake part of the fluid pump, the differential pressure valve increasing a wheel pressure of a wheel cylinder by increasing a braking liquid discharged from the fluid pump to an output pressure, and a controller that drives the electric motor and the differential pressure valve. When a valve opening amount of the differential pressure valve is reduced in a state in which the electric motor is driven, the controller performs an appropriateness determination as to whether or not the coupling part is normal based on a change in a state quantity related to the electric motor.
The present invention addresses the problem of providing a brake caliper capable of stabilizing elastic force of a spring. A brake caliper (12) according to an embodiment of the present invention comprises: a brake pad (25); a support member (22) that supports the brake pad; a pad support (24) that has an interposition part (61) interposed between the brake pad and the support member and has a support plate (71) supported on a surface (41b) at the side opposite from a rotor (11); and a spring (26) that has an attachment part (81) attached to the brake pad, a contact part (92) in contact with the surface of the support plate, and an elastic part (91) provided between the attachment part and the contact part. The contact part is at a first position (P1) when the brake pad is separated from the rotor, the contact part is at a second position (P2) separated from the first position when the brake pad is in contact with the rotor, and the contact part is movably supported on the surface.
A wear determination system determines wear of a target wheel that is a steered wheel included in a vehicle. The wear determination system calculates a ground speed of the target wheel and a rotation speed of the target wheel in the same section where the vehicle is turning right or left, and calculates a curved-traveling wheel radius based on the ground speed and the rotation speed. The curved-traveling wheel radius is a dynamic loaded radius of the target wheel that corresponds to the vehicle turning right or left. The wear determination system determines wear of a shoulder portion of the target wheel based on the curved-traveling wheel radius.
B60W 40/12 - Estimation or calculation of driving parameters for road vehicle drive control systems not related to the control of a particular sub-unit related to parameters of the vehicle itself
8.
RESERVOIR TANK AND BRAKE HYDRAULIC PRESSURE GENERATOR
As an example, a reservoir tank according to an embodiment includes: an upper case; a lower case coupled to the upper case; a partition wall extending from the upper case toward the lower case and separating, in a horizontal direction, first and second rooms which are included in a space inside the upper case and the lower case; and a partition member having a first wall covering the first room from below, and a second wall protruding upward from the first wall and being in contact with the partition wall. The partition wall includes a first slit opening to a lower edge of the partition wall and establishing communication between the first and second rooms, and at least an edge of the first slit and the second wall forming a first hole which establishes communication between the first and second rooms and which is positioned above the first wall.
In an electric cylinder device including a third gear that rotates by receiving rotation of an electric motor and a linear motion conversion mechanism that converts the rotation of the third gear into linear motion of a piston inside a cylinder, a nut, which is a linear motion portion of the linear motion conversion mechanism, and the piston are connected in a state in which relative displacement in a radial direction is allowed.
F04B 9/02 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F04B 17/03 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
F04B 53/14 - Pistons, piston-rods or piston-rod connections
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
F16D 125/48 - Rotating members in mutual engagement with parallel stationary axes, e.g. spur gears
F16D 131/00 - Overall arrangement of the actuators or their elements, e.g. modular construction
F16H 25/10 - Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion with adjustable throw
10.
DRIVING ASSISTANCE DEVICE AND DRIVING ASSISTANCE METHOD
A driving assistance device (60) is provided with: a memory (101) that stores acceleration characteristics; a request derivation unit (103) that is configured to derive, on the basis of the acceleration characteristics, the acceleration of the vehicle (10) according to the operation amount of an operation member as a requested acceleration; and a command processing unit (105) that is configured to transmit a command value based on the requested acceleration to a driving device (20) and a braking device (30). The command processing unit (105) is further configured such that when the requested acceleration is included in the predetermined acceleration range, the command processing unit (105) derives a driving force command value and braking force command value so as to satisfy the requirements that the driving force command value and the braking force command value both be greater than 0 (zero) and that the difference between the driving force command value and the braking force command value be a value corresponding to the requested acceleration.
B60W 30/00 - Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
A braking system 20 comprises: a pressure regulation unit 50 that generates a reference liquid pressure and also generates a rear wheel liquid pressure in accordance with the reference liquid pressure; a front wheel liquid pressure adjustment part 74 configured so as to be able to set the front wheel liquid pressure lower than the rear wheel liquid pressure when the reference liquid pressure is generated; and a control device 80 that controls a regeneration device 90, the pressure regulation unit 50, and the front wheel liquid pressure adjustment part 74. The control device 80 executes, when a vehicle braking force request value is reduced under a situation where the vehicle braking force request value is equal to or more than a first braking force, a first reduction process for reducing a regenerative braking force applied to front wheels FL, FR and holding the front wheel liquid pressure while reducing the rear wheel liquid pressure by reducing the reference liquid pressure.
A processing circuit executes a required flow rate derivation process M25 for deriving a required value of the flow rate of a brake fluid supplied to a first wheel cylinder as a first required flow rate Qwr, and deriving a required value of the flow rate of the brake fluid supplied to a second wheel cylinder as a second required flow rate Qwf, the required value of the flow rate of the brake fluid supplied to the first wheel cylinder being based on a map Mp1r, a first target wheel pressure Ptr, and the wheel pressure Pwr, and the required value of the flow rate of the brake fluid supplied to the second wheel cylinder being based on a first map Mp1f, a second target wheel pressure Ptf, and the wheel pressure Pwf. The processing circuit executes a plurality of processes M29, M31, M33 to increase the rotation speed of an electric motor 52 as the sum of the first required flow rate Qwr and the second required flow rate Qwf increases.
B60T 13/20 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs with control of pump driving means
B60T 8/17 - Using electrical or electronic regulation means to control braking
B60T 13/122 - Systems using both master cylinder and distributor valveStructural associations of master cylinder with distributor valve
B60T 17/02 - Arrangements of pumps or compressors, or control devices therefor
A processing circuit according to the present invention executes: a request flow rate derivation process for deriving a second request flow rate Qwf based on a second wheel pressure, a second target wheel pressure Ptf, and a cylinder characteristic that indicates the relationship between the second wheel pressure and a supply amount of a brake fluid to a second wheel cylinder, and deriving a first request flow rate Qwr based on a first wheel pressure, a first target wheel pressure Ptr, and a cylinder characteristic that indicates the relationship between the first wheel pressure and a supply amount of the brake fluid to the first wheel cylinder; and an aperture adjustment process for adjusting an instructed aperture, which is an instruction value for the aperture of a first pressure adjustment valve 61, in consideration of the first request flow rate Qwr and the second request flow rate Qwf.
B60T 8/17 - Using electrical or electronic regulation means to control braking
B60T 13/20 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs with control of pump driving means
B60T 13/122 - Systems using both master cylinder and distributor valveStructural associations of master cylinder with distributor valve
In one example, a motor device according to an embodiment of the present invention comprises: a motor provided with an accommodating chamber and including a coil accommodated in the accommodating chamber and an output shaft which protrudes from the accommodating chamber and which can rotate about a rotation axis; a conductive support member; a planetary gear mechanism including a ring gear supported by the support member and provided around the rotation axis, a sun gear provided on the output shaft, and a planetary gear provided between the ring gear and the sun gear; at least one busbar unit including a second busbar joined, at a joining part located outside the accommodating chamber, to the coil or to a first busbar electrically connected to said coil; and at least one insulating recessed surface provided on the ring gear to define a recessed part where the joining part is accommodated.
In an electric cylinder device including a third gear that rotates by receiving rotation of an electric motor and a linear motion conversion mechanism that converts the rotation of the third gear into linear motion of a piston inside a cylinder, a nut, which is a linear motion portion of the linear motion conversion mechanism, and the piston are connected in a state in which relative displacement in a radial direction is allowed.
F04B 9/02 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F04B 17/03 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
F04B 53/14 - Pistons, piston-rods or piston-rod connections
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
F16D 125/48 - Rotating members in mutual engagement with parallel stationary axes, e.g. spur gears
F16D 131/00 - Overall arrangement of the actuators or their elements, e.g. modular construction
F16H 25/10 - Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion with adjustable throw
In an electric cylinder device including a third gear that rotates by receiving rotation of an electric motor and a linear motion conversion mechanism that converts the rotation of the third gear into linear motion of a piston inside a cylinder, a nut, which is a linear motion portion of the linear motion conversion mechanism, and the piston are connected in a state in which relative displacement in a radial direction is allowed.
F04B 9/02 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F04B 17/03 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
F04B 53/14 - Pistons, piston-rods or piston-rod connections
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
F16D 125/48 - Rotating members in mutual engagement with parallel stationary axes, e.g. spur gears
F16D 131/00 - Overall arrangement of the actuators or their elements, e.g. modular construction
F16H 25/10 - Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion with adjustable throw
A braking control device (BC) is provided with: a specification unit (102) that specifies a wheel having a relatively small load among a plurality of wheels (W); and a control unit (103) that designates the wheel (W) specified to have a relatively small load by the specification unit (102) as a target wheel, and causes a wheel braking unit (8) corresponding to the target wheel to apply friction braking force to the target wheel in order to remove rust formed in the wheel braking unit (8).
B60T 7/12 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger
A braking device 100 comprises: a pressurization unit 50 using a first electric motor 513 as a power source; differential pressure control valves 731, 732; and a control device 200. The control device 200 executes: heat generation suppression processing for operating the pressurization unit 50 so that a servo pressure becomes lower than a required servo pressure after restricting a reduction in wheel pressure by increasing an instructed differential pressure; and degeneration processing, including operating the pressurization unit 50 so that the servo pressure reaches the required servo pressure, if a required braking force has been changed in a situation where the servo pressure became lower than the required servo pressure due to the execution of the heat generation suppression processing.
This braking device 100 comprises: a second supply liquid path 722 connected to a wheel cylinder 16 for a rear wheel 11r; a holding valve 74 provided in the second supply liquid path 722; a pressure device 50; and a control device 90. A processing circuit 91 of the control device 90, when an increase regulation control is implemented in a situation where the holding valve 74 is open and a regenerative braking force is being generated in the rear wheel 11r, activates a regeneration device 200 and the pressurizing device 50 so that the regenerative braking force is reduced and the friction braking force is increased by increasing in supply pressure. When the regenerative braking force reaches a prescribed value or less, the processing circuit 91 regulates an increase in wheel pressure by closing the holding valve 74.
B60T 8/17 - Using electrical or electronic regulation means to control braking
B60T 8/48 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure
A vehicle control system controls a yaw motion of a vehicle generated by an operation of an input unit in a steering system of the vehicle. A yaw motion control unit acquires information on a vehicle speed of the vehicle, an operable range of the input unit by a driver of the vehicle, and an operation amount of the input unit, calculates an addition amount that is to be added to the operation amount according to the operable range, and outputs a calculated addition amount to the steering system.
A determination device acquires fluctuation data indicating a progression of a fluctuation value that is a difference between a pre-process wheel speed detected by a wheel speed sensor that detects a rotation speed of a wheel of a vehicle, and a post-process wheel speed obtained by performing a low-pass filter process on the pre-process wheel speed. The determination device determines whether there is an anomaly in the wheel based on the fluctuation data.
In the present invention, an ECU 40 functions as: an acquisition unit 103 that acquires at a speed differential related value relating to a differential value of a parameter related to the speed of a vehicle 10 and/or a request value differential related value relating to a differential value of a request value for the vehicle 10; and a filter processing unit 105 that, when the absolute value of at least one of the speed differential related value and the required value differential related value is equal to or greater than a threshold value, uses a low-pass filter having a larger cutoff frequency than when the at least one absolute value is less than the threshold value to derive a wheel speed detection value on the basis of a value derived by performing a filtering process for removing noise from a wheel speed raw value.
A braking device (100) comprises: an electric cylinder (51); a servo pressure sensor (58); a braking actuator (70); a memory in which a first characteristic and a second characteristic are stored; and a processing circuit. The processing circuit is configured to: select the second characteristic if a servo pressure detection value is larger than a target servo pressure in a situation where it is determined that the servo pressure has changed due to operation of the braking actuator (70); derive motor torque corresponding to the target servo pressure on the basis of the selected second characteristic; and drive an electric motor of the electric cylinder (51) on the basis of the target value corresponding to the derived motor torque.
B60T 13/122 - Systems using both master cylinder and distributor valveStructural associations of master cylinder with distributor valve
B60T 8/00 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
B60T 13/18 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs with control of pump output delivery
24.
BRAKING DEVICE AND CONTROL METHOD FOR BRAKING DEVICE
A braking device (100) comprises: an electric cylinder (51); a supply flow path through which a brake fluid flows toward a wheel cylinder (16) when the brake fluid is discharged from an output port (516) of the electric cylinder (51); an orifice (60) provided in the supply flow path; and a processing circuit. The processing circuit is configured to set the lower limit value for motor rotation speed on the basis of a negative pressure suppression characteristic and an orifice differential pressure, and to drive an electric motor of the electric cylinder (51) so that the motor rotation speed does not fall below the lower limit value when a piston (512) is moved in the backward direction (Zb) by driving the electric motor.
B60T 8/00 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
B60T 13/122 - Systems using both master cylinder and distributor valveStructural associations of master cylinder with distributor valve
An aspect of the present disclosure relates to a vehicle control system configured to control a vehicle. The vehicle control system includes an electronic control unit configured to limit a driving force to be applied to the vehicle based on a brake temperature that is a temperature of a friction brake provided on a wheel of the vehicle.
A brake control device includes: an acquisition section that acquires a steering angle and a first steering angular velocity passed through a first low-pass filter; a braking processing section that decides to apply braking force to a wheel by a brake device when the absolute value of steering angle is not less than a predetermined angle and the absolute value of first steering angular velocity is not less than a predetermined velocity; and a control section that drives the brake device according to the braking processing section's decision. The acquisition section acquires a second steering angular velocity including higher frequency components than the first steering angular velocity, the braking processing section decides to execute predetermined preload control when the absolute value of second steering angular velocity is not less than the predetermined velocity, and the control section executes preload control on the brake device to improve the brake device's responsiveness.
B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
A control device 50 as a road gradient estimation device estimates the road gradient of a road on which a vehicle 10 is traveling on the basis of an inertial acceleration derived on the basis of an inertial force in a traveling direction of the vehicle 10 and an actual acceleration derived on the basis of the amount of change in the vehicle speed of the vehicle 10. The control device 50 includes a forward/backward movement determination unit M11 for modifying a forward/backward movement determination indicating whether the vehicle 10 is moving backward. The control device 50 includes an acceleration correction unit M12 that acquires the inertial acceleration as a first acceleration and the actual acceleration as a second acceleration, and, when the forward/backward movement determination is modified, performs correction to invert the sign of the first acceleration or the second acceleration. The control device 50 includes a gradient estimation unit for estimating the road gradient on the basis of the difference between the first acceleration and the second acceleration.
A processing circuit 90 of an electric braking device 10 functions as: a pressing force derivation unit that derives a pressing force estimation value based on the motor current value Imt; a filter unit that generates a post-filter pressing force-related value by attenuating signals of components with frequencies higher than a prescribed frequency among signals indicating pressing force-related values relating to the pressing force estimation value, while allowing signals of components with frequencies at or below the prescribed frequency to pass; and a motor control unit that controls an electric motor 40 on the basis of the post-filter pressing force-related value. By functioning as the filter unit, the processing circuit 90 sets the prescribed frequency such that the value decreases as the motor rotational speed decreases.
B60T 8/00 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
In the present invention, a processing circuit of an electric braking device functions as a pressing force estimation unit M11 for deriving a pressing force estimation value PE. The pressing force estimation unit M11 maintains the pressing force estimation value PE when a motor current Imt is a value in a range of a dead zone. When the motor current Imt is greater than the upper limit value of the dead zone, the pressing force estimation unit M11 derives the pressing force estimation value PE on the basis of a first relationship, and changes the upper limit value of the dead zone DZ. When the motor current Imt is less than the lower limit value of the dead zone, the pressing force estimation unit M11 derives the pressing force estimation value PE on the basis of a second relationship, and changes the lower limit value of the dead zone DZ.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 8/00 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
A processing circuit of this electric braking device functions as: a rotation angle detection unit M11 that acquires a detected rotation angle value θS that is a detected value of the rotation angle of an electric motor; and a pressing force estimation unit M21 that, on the basis of a relationship that corresponds to the rotation direction of the electric motor, among a first relationship between a motor current Imt and a pressing force when the electric motor is being rotated in an increasing rotation direction and a second relationship between the motor current Imt and the pressing force when the electric motor is being rotated in a decreasing rotation direction, derives an estimated pressing force value PE with a magnitude corresponding to the motor current Imt. If it is determined, on the basis of the detected rotation angle value θS and the motor current Imt, that the relationship between the motor current Imt and the pressing force deviates from both the first relationship and the second relationship, the pressing force estimation unit M21 derives, as the estimated pressing force value PE, an estimated pressing force value of immediately before the determination that the relationship deviates from both the first relationship and the second relationship .
B60T 8/00 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
In a braking control device, a control unit is configured to control the yaw moment and the roll moment by independently controlling a braking force to be applied to each of the wheels of a vehicle by a braking device from the time an intervention condition is satisfied to the time an intervention end condition is satisfied while the vehicle turns. A change unit is configured to perform at least one of changing the intervention condition to be more easily satisfied and changing the intervention end condition to be less easily satisfied when the braking device is in a low-temperature state than when the braking device is in a non-low-temperature state.
B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
B60T 8/171 - Detecting parameters used in the regulationMeasuring values used in the regulation
An electric braking device (1) estimates the viscosity of a brake fluid on the basis of a first displacement amount of a piston (P) when the piston is retracted by an electric motor (M) from the point of time when the brake fluid is blocked by a switching valve (NC1) and the brake fluid in a reservoir (11) is suctioned into the hydraulic chamber (H), and a second displacement amount of the piston when the piston is advanced until it is determined that the pressure in the hydraulic chamber has returned to a pressure before the piston retraction after the completion of the piston retraction.
B60T 8/171 - Detecting parameters used in the regulationMeasuring values used in the regulation
B60T 8/00 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
A braking device according to an embodiment of the present invention comprises, as an example: a backing plate; a braking member that is configured to brake a wheel by contacting a drum rotor and is supported by the backing plate; a rotation member that is capable of rotating about a central shaft; a linear motion member that is attached to the rotation member so as to move in the shaft direction in accordance with the rotation of the rotation member; a cable that is supported by the linear motion member and configured to cause the braking member to contact the drum rotor by being pulled by the linear motion member; and a first case that includes a support surface attached to the backing plate and supporting the rotation member, a first portion made from a metal, the first portion being provided between the support surface and the backing plate and surrounding the cable, and a second portion made from a resin, the second portion being formed integrally with the first portion and at least partially accommodating the rotation member.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/22 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart
This travel mode proposal device is applied to a vehicle that is provided with a plurality of travel modes for improving riding comfort for an occupant of the vehicle. A processing circuit of the travel mode proposal device functions as an acquisition unit M11 that acquires information on vehicle interior information, vehicle exterior information, and/or vehicle information of the vehicle, and an instruction unit M15 that instructs the proposal device to propose to the occupant a travel mode corresponding to the information acquired by the acquisition unit M11 among the plurality of travel modes.
B60W 30/182 - Selecting between different operative modes, e.g. comfort and performance modes
B60T 7/12 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger
B60T 8/00 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
B60W 10/04 - Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
B60W 10/18 - Conjoint control of vehicle sub-units of different type or different function including control of braking systems
A brake control device 50 controls the braking force applied to a vehicle 10. If the reversing vehicle 10 is to be stopped, a processing circuit 51 of the brake control device 50 functions as a control unit M15 which performs first stopping control for controlling the braking force so as to suppress a change in the attitude of the vehicle 10 caused by stopping.
B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
A braking control device includes a derivation unit that derives the slip ratio of a wheel based on detected wheel speed and vehicle speed, a brake processor that determines braking amounts to be applied to a regenerative braking device and a friction braking device based on an accelerator operation amount and a braking operation amount, and a controller that controls the regenerative braking device and the friction braking device based on the determined braking amounts. When the slip ratio increases to a predetermined threshold value or more while the accelerator operation amount is decreasing, the controller executes target slip control for controlling torque of a motor of the regenerative braking device based on a predetermined target slip ratio to adjust the slip ratio, and when the target slip control is executed to perform the braking operation, the friction braking device generates a braking amount corresponding to the braking operation amount.
A braking control device for vehicles includes an upper braking unit that electrically outputs a supply pressure according to a braking request amount; and a lower braking unit that is disposed between the upper braking unit and a plurality of wheel cylinders, adjusts the supply pressure with respect to each of the plurality of wheel cylinders, and outputs a wheel pressure. When the lower braking unit executes the sideslip prevention control, the upper braking unit increases the supply pressure to a demand pressure necessary for executing the sideslip prevention control.
B60T 13/18 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs with control of pump output delivery
B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
A braking control device (70) comprises: a selection unit (82) configured so that, when braking force is imparted to a vehicle (10) to stop the vehicle (10), the selection unit (82) selects a stop control from a stop control group having a first stop control that includes a braking force reduction process and a braking force increase process and a second stop control that includes a braking force reduction process but does not include a braking force increase process, the selection unit (82) selecting the stop control in accordance with the time allowed to stop the vehicle (10); and a control unit (81) configured to execute the stop control selected by the selection unit (82) when braking force is imparted to the vehicle (10) to stop the vehicle (10).
B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
A processing circuit 51 of a braking control device 50 functions as: a control unit M11 that, when bringing a vehicle 10 to a halt by applying a braking force thereto, performs stop-time braking control of bringing the vehicle body speed of the vehicle 10 to 0 (zero) after reducing the vehicle braking force to a prescribed braking force; and a setting unit M15 that, during the execution of the stop-time braking control, sets the time for executing the processing for retaining the stop-time braking control shorter when the moving force acting on the vehicle 10 is larger.
B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
A braking control device includes a pressure adjustment unit that adjusts a wheel pressure Pw of a wheel cylinder by a servo pressure Pu generated using an electric motor as a power source, a solenoid valve provided in a hydraulic pressure transmission path from the servo pressure Pu to the wheel pressure Pw, and a controller that controls the pressure adjustment unit. The controller calculates a pressure loss Pd in the solenoid valve based on an instruction pressure Ps calculated from a braking request amount Bs and the wheel pressure Pw. Then, the controller determines a target pressure Pt by adding the pressure loss Pd to the instruction pressure Ps, and controls the pressure adjustment unit based on the target pressure Pt.
B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
B60T 8/171 - Detecting parameters used in the regulationMeasuring values used in the regulation
B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
A processing circuit 51 of a braking control device 50 functions as: a reduction control unit M13 that, when stopping a vehicle 10 traveling on an uphill road by applying braking force to the vehicle 10, executes braking force reduction processing in which a vehicle body speed of the vehicle 10 is set to 0 (zero) after reducing the vehicle braking force to a first braking force that is a braking force equal to or greater than 0 (zero) and is smaller than a stop maintaining braking force which is a braking force for counteracting a force acting on the vehicle 10 in a downhill direction and a force acting on the vehicle 10 in an uphill direction; and a degeneration control unit M17 that executes braking force increase processing that increases the vehicle braking force to a second braking force greater than or equal to the stop maintaining braking force from a point in time when the vehicle 10 is switched from the forward movement to the backward movement by the execution of the braking force reduction processing.
B60T 8/00 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
A processing circuit 51 of a braking control device 50 functions as: a control unit M11 that, when a braking force is applied to a vehicle 10 to stop the vehicle, executes reduction correction processing of reducing the vehicle braking force to a predetermined braking force less than a required braking force and then setting the vehicle body speed of the vehicle 10 to 0 (zero); and a setting unit M15 that, when a change in a braking operation being performed by the driver is detected before the start of the reduction correction processing, setting the execution time of the reduction correction processing to a shorter time than when no change in the braking operation is detected.
B60T 7/12 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger
This braking control device comprises: a control cylinder into which a control piston is inserted and in which a servo pressure is generated through movement of the control piston by an electric motor; a servo pressure sensor that detects the servo pressure; and a controller that calculates a target pressure on the basis of a braking request amount, and controls the electric motor on the basis of the target pressure and the servo pressure. The braking control device also adjusts the wheel pressure of a wheel cylinder by the servo pressure. Here, the controller calculates, on the basis of the target pressure, a standard liquid amount that should flow into the wheel cylinder, calculates an estimated liquid amount that is assumed to have flowed into the wheel cylinder on the basis of the servo pressure, and controls the electric motor on the basis of deviation of the estimated liquid amount from the standard liquid amount.
This braking control device is applied to a vehicle having front wheels equipped with a regeneration device. The braking control device comprises: a control cylinder that generates a basic pressure by using an electric motor as a power source; a solenoid valve that adjusts the basic pressure to an adjustment pressure; and a controller that controls the electric motor and the solenoid valve. The braking control device controls the front wheel pressure of a front wheel cylinder by means of the adjustment pressure and controls the rear wheel pressure of a rear wheel cylinder by means of the basic pressure. The controller: calculates fluid volumes to be supplied to the front wheel cylinder and the rear wheel cylinder as front-wheel and rear-wheel nominal fluid volumes, on the basis of a front-wheel target pressure and a rear-wheel target pressure which are target values for the front wheel pressure and the rear wheel pressure, respectively; controls the electric motor on the basis of the front-wheel and the rear-wheel nominal fluid volumes; and controls the solenoid valve on the basis of the front-wheel target pressure and the rear-wheel target pressure.
This braking control device for vehicles comprises: a control cylinder into which a control piston is inserted and which generates a servo pressure by moving the control piston with an electric motor; a servo pressure sensor which detects the servo pressure; and a controller which controls the electric motor on the basis of the servo pressure. The braking control device adjusts a wheel pressure of a wheel cylinder according to the servo pressure. The controller acquires a discharge liquid amount from the control cylinder, calculates an estimated liquid amount on the basis of the servo pressure and a conversion map, and controls the electric motor on the basis of a deviation between the discharge liquid amount and the estimated liquid amount. For example, the controller calculates a target pressure on the basis of a braking request amount, calculates a standard liquid amount on the basis of the target pressure and the conversion map, and controls a rotation angle of the electric motor on the basis of the standard liquid amount and the deviation.
Provided is a vehicle control device for controlling a driving force or braking force of a vehicle that passes a source (S) of change which changes the vehicle speed when a wheel of the vehicle climbs thereupon or descends therefrom. The vehicle control device comprises: a passage determination unit (44) that determines that the vehicle has passed the source of change; an impulse computation unit (43) that calculates an impulse applied to the vehicle when the vehicle passes the source of change and that outputs impulse information which corresponds to the calculated impulse; and a braking/driving computation unit (422) that, on the basis of the impulse information, calculates a driving force and braking force after the vehicle has passed the source of change. The impulse computation unit calculates a velocity impulse that is based on the vehicle speed which changes when passing the source of change, and a braking/driving impulse that is based on the driving force and the braking force which change when passing the source of change. When a disturbance impulse is defined as the difference between the velocity impulse and the braking/driving impulse, the braking/driving computation unit, upon determination by the passage determination unit that the source of change has been passed, calculates the driving force and the braking force on the basis of the amount of change in the disturbance impulse when passing the source of change.
B60W 30/00 - Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
B60L 15/20 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
B60T 7/12 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger
B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
This vehicle control device for controlling driving force and braking force of a vehicle passing over a change generation source (S) that changes a vehicle speed through a vehicle wheel riding over or down the same comprises: an impulse calculation unit (43) for calculating an impulse applied to the vehicle at the time of the vehicle passing over the change generation source, and for outputting impulse information corresponding to the calculated impulse; a passage determination unit (44) for determining the passage over the change generation source on the basis of the impulse information outputted by the impulse calculation unit; and a braking/driving calculation unit (422) for calculating the driving force and the braking force at the time of the passing over the change generation source on the basis of the determination result from the passage determination unit. The impulse calculation unit calculates, as the impulse information, a speed impulse based on the vehicle speed when passing over the change generation source, and a braking/driving impulse based on the driving force and the braking force when passing over the change generation source. The passage determination unit determines the passage over the change generation source on the basis of a difference between the speed impulse and the braking/driving impulse that are calculated by the impulse calculation unit.
B60W 30/00 - Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
B60L 15/20 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
B60T 7/12 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger
The present invention accurately determines whether a road surface on which a vehicle is located is submerged. A submergence estimation device (2) is applied to a vehicle in which at least one of a plurality of wheels is a drive wheel and at least one of the plurality of wheels is a following wheel, and comprises: a wheel speed difference acquisition unit (200) that acquires a wheel speed difference from a difference between the wheel speed of the drive wheel and the wheel speed of the following wheel; and a submergence determination unit (202) that determines whether the road surface on which the vehicle is located is submerged on the basis of the wheel speed difference.
A disc brake device according to an embodiment comprises, for example: a disc that is configured to be clamped between two brake pads when braking a vehicle; a hat that connects the disc to an axle of the vehicle; a first coating that is a metal coating formed by electroless plating and electrolytic plating, and is provided on two side surfaces of the disc facing the brake pads; and a second coating that is less susceptible to rust than the hat, is provided on a surface of the hat, and differs from the first coating in at least one of a material and a manufacturing method.
A braking control device for a vehicle includes an upper braking unit configured to pressurize a supply pressure by throttling, with a pressure adjustment valve, a circulation flow discharged by a fluid pump driven by an electric motor, and a lower braking unit disposed between the upper braking unit and a wheel cylinder and configured to pressurize the supply pressure to output a wheel pressure to the wheel cylinder. In a case where the lower braking unit pressurizes the wheel pressure, the upper braking unit reduces a rotation number of the electric motor as compared with a case where the lower braking unit does not pressurize the wheel pressure.
B60T 13/20 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs with control of pump driving means
In an electric cylinder device including a third gear that rotates by receiving rotation of an electric motor and a linear motion conversion mechanism that converts the rotation of the third gear into linear motion of a piston inside a cylinder, a nut, which is a linear motion portion of the linear motion conversion mechanism, and the piston are connected in a state in which relative displacement in a radial direction is allowed.
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
A vehicle braking control device includes supply and servo chambers sealed by a seal member, a pressure adjustment unit that adjusts front wheel pressure by supplying a first servo pressure to the servo chamber and outputs front wheel supply pressure from the supply chamber to a front wheel cylinder, and adjusts rear wheel pressure by outputting a second servo pressure to a rear wheel cylinder as rear wheel supply pressure, front/rear wheel supply pressure sensors that detect the front/rear wheel supply pressures respectively, and a controller that selects any one of a two-system pressure adjustment for individually adjusting the first and second servo pressures, and a one-system pressure adjustment for adjusting the first and second servo pressures to be the same. The controller individually calculates front/rear wheel target pressures and causes the front/rear wheel supply pressures to coincide with the front/rear wheel target pressures in the two-system pressure adjustment
B60T 8/26 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
B60T 8/176 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
An electric braking device 10 comprises: a torque difference calculation unit 94 that calculates a pressurization/decompression torque difference that is a difference between a first command torque that is a command torque at a first timing at which a change trend of command torque to an electric motor 40 changes from an increase trend to a decrease trend and vice versa, and a second command torque that is a command torque at a second timing at which a pressing force applied to a rotor 110 starts to change by maintaining the change trend of the command torque from the first timing; and an efficiency estimation unit 95 that estimates the efficiency of the electric braking device 10 that is the ratio of the command torque to the difference between the command torque and the proportional loss torque, on the basis of the first command torque or the second command torque and the pressurization/decompression torque difference.
B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
A brake control device of the present invention comprises a control cylinder that generates a servo pressure by movement of a control piston driven by an electric motor, a normally open solenoid valve provided in a liquid pressure transmission path from the control cylinder to a wheel cylinder, and a controller that controls the electric motor and the solenoid valve, where the wheel pressure of the wheel cylinder is adjusted by the servo pressure. When a temperature-associated value associated with the temperature of a constituent member related to the electric motor exceeds a threshold value, the controller performs specific processing for closing the electromagnetic valve to reduce the servo pressure. During the specific processing, the servo pressure is increased at the point in time when a prescribed time has elapsed from the point in time when the servo pressure was reduced.
This braking control device comprises: a control cylinder that generates servo pressure by movement of a control piston driven by an electric motor; a solenoid valve of a normally open type provided in a liquid-pressure transmission path from the control cylinder to a wheel cylinder; and a controller that controls the electric motor and the solenoid valve. The wheel pressure of the wheel cylinder is adjusted by the servo pressure. When a temperature related value related to the temperature of a constituting member for the electric motor exceeds a threshold value, the controller closes the solenoid valve to reduce the servo pressure to a lower limit pressure set on the basis of a maximum rating capable of continuously energizing the constituting member. Further, when the differential pressure between the wheel pressure and the lower limit pressure is small, the controller reduces a valve current supplied for closing the solenoid valve as compared to when the differential pressure is large.
A vehicle control system includes an information acquisition unit that acquires traveling state information each time, an information storage unit that stores the traveling state information acquired by the information acquisition unit, and a weight estimation unit that derives an estimated value of a vehicle weight based on traveling state information satisfying a predetermined selection condition among a plurality of pieces of traveling state information stored by the information storage unit. The selection condition is a condition under which disturbance in derivation of the estimated value of the vehicle weight by the weight estimation unit is reduced.
This braking control device is applied to a vehicle provided with a regenerative device on a front wheel. The braking control device is provided with a control cylinder that generates a basic pressure with an electric motor serving as a power source, an electromagnetic valve that adjusts the basic pressure to an adjusted pressure, and a controller that controls the electric motor and the electromagnetic valve. The device controls a front wheel pressure at the adjusted pressure and controls a rear wheel pressure at the basic pressure. The controller executes either: one-system pressure adjustment in which a total braking force corresponding to a required braking amount is reached by making the adjusted pressure equal to the basic pressure; or two-system pressure adjustment in which the adjusted pressure is made lower than the basic pressure so that the total braking force is reached in a state in which distribution of the total braking force to the front and rear is kept at prescribed values. A first instructed pressure for controlling the adjusted pressure in the one-system pressure adjustment and a second instructed pressure for controlling the adjusted pressure in the two-system pressure adjustment are computed, and either the one-system pressure adjustment or the two-system pressure adjustment is selected on the basis of a comparison between the first instructed pressure and the second instructed pressure.
B60T 8/26 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
B60L 7/14 - Dynamic electric regenerative braking for vehicles propelled by AC motors
B60L 7/20 - Braking by supplying regenerated power to the prime mover of vehicles comprising engine-driven generators
B60L 7/24 - Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
B60T 8/17 - Using electrical or electronic regulation means to control braking
In a braking force maintaining mechanism 70, when a ratchet gear 71 that rotates in conjunction with driving of an electric motor rotates in an increase direction X1 in a state where a pawl member 72 is engaged with the ratchet gear 71, Engagement between the ratchet gear 71 and the pawl member 72 is released, thereby allowing the ratchet gear 71 to rotate in a decrease direction X2. In an engagement release mechanism 80, when a force is input from the outside to cause a bolt 81 rotary movement in a first direction Y1, a release pawl 86 approaches and comes into contact with the ratchet gear 71. When the bolt 81 rotates in the first direction Y1 in this state, the ratchet gear 71 is rotated in the increase direction X1 by the release pawl 86.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
A braking system 20 comprises: a pressure adjustment unit 50 that generates a reference hydraulic pressure and also generates a front wheel hydraulic pressure according to the reference hydraulic pressure; a rear wheel hydraulic pressure adjustment unit 74 that is configured to allow a rear wheel hydraulic pressure to be less than the front wheel hydraulic pressure when the reference hydraulic pressure is being generated; and a control device 80 that controls a regeneration device 90, the pressure adjustment unit 50, and the rear wheel hydraulic pressure adjustment unit 74. The control device 80, when a vehicle braking force request value is reduced under a condition where the vehicle braking force request value is equal to or more than a first braking force, executes first reduction processing in which a regenerative braking force applied to rear wheels RL, RR is reduced and the rear wheel hydraulic pressure is maintained while reducing the front wheel hydraulic pressure by reducing the reference hydraulic pressure.
B60T 8/17 - Using electrical or electronic regulation means to control braking
B60L 7/12 - Dynamic electric regenerative braking for vehicles propelled by DC motors
B60T 8/28 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels responsive to deceleration
B60T 8/58 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration responsive to speed and another condition or to plural speed conditions
A brake pad accessory according to an embodiment comprises, as an example: a base part configured to be removably attached to a backplate of a brake pad by an elastic force; a first spring extending from the base part and configured to push the brake pad in a direction away from a rotor; and an extension part extending from the base part. The extension part has at least one of: a wear alarm device configured to come into contact with the rotor when the distance between the backplate and the rotor is less than a prescribed distance; and a second spring configured to push the brake pad about a central axis of rotation of the rotor.
F16D 65/097 - Resilient means interposed between pads and supporting members
F16D 55/225 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
A fluid power system according to an embodiment includes a valve device having a first flow path connecting a first chamber connected to a pressure source and a second chamber connected to an actuator, the valve device having: a first check valve movable between a first open position and a first closed position and allowing fluid to flow from the first chamber to the second chamber; and a movable part that displaces relative to the first check valve in conjunction with actuation of the pressure source. The movable part is in a position for holding the first check valve in the first open position when the pressure source reduces the pressure of the first chamber below a first pressure or is actuated so as to reduce the pressure, and is in a position allowing the first check valve to be in the first closed position when the pressure source adjusts the pressure of the first chamber to be at or above the first pressure or is actuated so as to apply pressure.
B60T 8/17 - Using electrical or electronic regulation means to control braking
B60T 13/18 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs with control of pump output delivery
B60T 13/122 - Systems using both master cylinder and distributor valveStructural associations of master cylinder with distributor valve
B60T 15/36 - Other control devices or valves characterised by definite functions
A braking system 100 comprises: an electric cylinder 51 that has a servo motor 513; a rotation angle sensor SE2; and a control unit 81. The rotation angle sensor SE2 is configured so as to detect a Z pulse, which is generated each time the servo motor 513 completes one full rotation, and a phase pulse, which is generated each time the servo motor 513 rotates by a prescribed rotation angle. The control unit 81 performs a rotation angle sensor checking process. In the rotation angle sensor checking process, the control unit 81 rotates the servo motor 513 such that a piston 512 retreats. The control unit 81 counts the number of phase pulses in the period from the detection of a first Z pulse to the detection of a second Z pulse. The control unit 81 determines that the rotation angle sensor SE2 is normal when the number of phase pulses is within a prescribed range.
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
An electric braking device (10) comprises: a piston (14) that has an exposed part (14A) that is exposed from a cylinder (13) over an entire range of movement for movement in response to the linear motion of a linear motion part (15B); a restrictable part (19) that extends further outward than the outer circumference of the piston (14) in the radial direction of the piston (14); and a restriction part (18) that restricts, relative to the cylinder (13), the rotation of the restrictable part (19) around the axis of the piston (14).
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
This braking control device includes: a main housing HGc in which first and second cylinders CM, CC are formed; a first piston NM which is inserted into the first cylinder CM and moves in conjunction with a braking operation member BP, whereby a supply pressure Pm can be generated in the first cylinder CM; an electric motor MT which generates first rotation power Tm; a reduction gear GS which decelerates the first rotation power Tm and outputs second rotation power Tn; a conversion mechanism GH which converts the second rotation power Tn into linear power Fn; a second piston NC which is inserted into the second cylinder CC and moves by the linear power Fn, whereby a servo pressure Pc is generated in the second cylinder CC; and a sub-housing HGs which holds the electric motor MT, the reduction gear GS, the conversion mechanism GH, and the second piston NC and is assembled to the main housing HGc.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
An electric braking device (1) selectively executes, when holding braking force, a first holding control for making the driving amount of some electric actuators from among a plurality of electric actuators (A1-A4) greater than the driving amount of the electric actuators other than said some electric actuators, and a second holding control for making the driving amount of the electric actuators other than said some electric actuators greater than the driving amount of said some electric actuators.
B60T 8/00 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
In this electric braking device, a screw shaft 51 of a linear motion conversion mechanism 50 rotates in response to rotational motion of an electric motor, and the rotational motion of the screw shaft 51 is converted into linear motion of a nut 60 of the linear motion conversion mechanism 50. The linear motion of the nut 60 in a forward direction X1 causes a piston 70 to move linearly, thereby increasing a braking force. A portion of the nut 60 that receives a force from the screw shaft 51 is disposed in the forward direction X1 relative to a rotation center PA of the nut 60 such that, when the nut 60 linearly moves in the forward direction X1 in a state in which a screw axis Zv of the screw shaft 51 is inclined with respect to a nut axis Zn of the nut 60, the nut 60 is caused to rotate in a direction in which the screw axis Zv is along the nut axis Zn by a force that the screw shaft 51 receives from the nut 60 and a force that the nut 60 receives from the piston 70.
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
Provided is a friction material composition according to one embodiment of the present invention, in which the content of copper in the friction material composition is less than 0.5 mass% in terms of copper element. The friction material composition contains, each relative to the total amount of the friction material composition, the following: 0.05-1 mass% of one or two inorganic materials (excluding monoclinic zirconium oxide) selected from the group consisting of (1) an inorganic material having an average particle diameter of 1 µm or less and a Mohs' hardness of 7.5-8 and (2) an inorganic material having an average particle diameter of 50 μm or less and a Mohs' hardness of not less than 6 and less than 7.5; 5-35 mass% of monoclinic zirconium oxide; and 0.5-10 mass% of magnesium hydroxide.
This hydraulic pressure generation device comprises: an electric motor that outputs rotational power; a conversion mechanism that outputs, as linear power for a linear motion member, rotational power input to a rotary member; a piston that is inserted into a cylinder and that moves under linear power to increase the hydraulic pressure of the cylinder; and an intermediate member that is disposed between the linear motion member and the piston and that is capable of sliding together with the linear motion member and the piston. The piston has a first bottom part and a first cylindrical part. The intermediate member has a second cylindrical part and is inserted into the first cylindrical part. In a gap between the inner peripheral surface of the first cylindrical part and the outer peripheral surface of the second cylindrical part, a gap Ska at a position close to the first bottom part is made narrower than a gap Skb which is at a position spaced apart from the first bottom part.
This braking control device comprises a first unit for outputting a supply pressure in accordance with operation displacement of a braking operation member, a second unit between the first unit and a wheel cylinder to increase the supply pressure and output a wheel pressure to the wheel cylinder, a displacement sensor for detecting the operation displacement, and a supply pressure sensor for detecting the supply pressure. The first unit selects either a first mode in which the operation displacement and the supply pressure are independent or a second mode in which the operation displacement and the supply pressure are linked. When the displacement sensor is normal, the first unit selects the first mode and increases the supply pressure based on the operation displacement. When the displacement sensor is not normal, the first unit selects the second mode, and the second unit increases the wheel pressure based on the supply pressure.
This braking control device comprises: a first unit that outputs a supply pressure in accordance with the amount of operation of a braking operation member; a second unit that is provided between the first unit and a wheel cylinder, and adjusts the supply pressure to output a wheel pressure to the wheel cylinder; a communication bus for communicating signals between the first unit and the second unit; an operation amount sensor that detects the operation amount; and a supply pressure sensor that detects the supply pressure. In the braking control device, when there is an abnormality in signal communication, the second unit calculates a target pressure on the basis of the operation amount and adjusts the wheel pressure on the basis of the difference between the target pressure and the supply pressure.
B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
This braking control device comprises a first unit that outputs supply pressure in accordance with the amount of operation of a braking operation member, a second unit that is provided between the first unit and a wheel cylinder and that increases the supply pressure and outputs a wheel pressure to the wheel cylinder, a communication bus that transfers signals between the first unit and the second unit, an operation amount sensor that detects the amount of operation, and a supply pressure sensor that detects the supply pressure. In the braking control device, the first unit controls the supply pressure so as to bring the supply pressure close to a target pressure calculated on the basis of the amount of operation. When the first unit is abnormal, the second unit increases the wheel pressure on the basis of the deviation between the target pressure and the supply pressure.
B60T 13/66 - Electrical control in fluid-pressure brake systems
B60T 8/171 - Detecting parameters used in the regulationMeasuring values used in the regulation
B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
A braking control device for vehicles that comprises: a first unit that outputs a supply pressure in accordance with the amount a braking operation member is operated; a second unit that is provided between the first unit and a wheel cylinder, regulates the supply pressure, and outputs a wheel pressure to the wheel cylinder; a communications bus that transfers signals between the first unit and the second unit; an operation amount sensor that is connected to the first unit and detects the operation amount; and a supply pressure sensor that is connected to the second unit and detects the supply pressure. The first unit calculates a target pressure on the basis of the operation amount, obtains the supply pressure from the second unit via the communications bus, and performs feedback control such that the supply pressure matches the target pressure.
B60T 13/66 - Electrical control in fluid-pressure brake systems
B60T 8/171 - Detecting parameters used in the regulationMeasuring values used in the regulation
B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
The objective of the present invention is to properly detect a sign that a stuck-state will occur. A stuck-state sign detecting device (2) comprises: a calculating unit (201) that compares a first wheel speed of a driving wheel of a vehicle with a second wheel speed, which is the average value of the wheel speed of the driving wheel, and calculates a deviation-related value relating to the deviation of the first wheel speed from the second wheel speed; and a stuck-state determining unit (202) that, if the deviation-related value is equal to or greater than a predetermined threshold and an acceleration demand is being generated for the vehicle, determines the probability that the vehicle will become stuck.
A braking system (20) comprises a brake pipe (50) that connects an actuator (40) and a friction brake (30). The brake pipe (50) includes a metal pipe (51), a flexible hose (55), and a fluid amount consumption unit (57). The metal pipe (51) includes fixed portions (52) to which each of a plurality of fasteners (15) is attached. One of the plurality of fixed portions (52) is a reference fixed portion (52A). The fluid amount consumption unit (57) is disposed in a part of the brake pipe (50) between the reference fixed portion (52A) and the friction brake (30).
B60T 17/04 - Arrangement of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
B60T 13/20 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs with control of pump driving means
A brake system includes electric braking devices. Each of the electric braking devices includes an electric motor. In the brake system, it is determined whether regenerative power is generated by the electric motors, and when it is determined that regenerative power is generated by any one of the electric motors, an electric motor other than the electric motor determined as generating regenerative power is driven so that a power consumption amount of the other electric motor is increased.
A braking system (20) is provided with a brake pipe (50) that connects an actuator (40) and a friction brake (30). The brake pipe (50) has a metal pipe (51) and a flexible hose (55). The metal pipe (51) has a plurality of fixing parts (52). The metal pipe (51) is fastened to a body (10A) of a vehicle (10) via fasteners (15) respectively attached to the fixing parts (52). One of the plurality of fixing parts (52) is a reference fixing part (52A). The flexible hose (55) is configured such that a node (X1) of a standing wave is positioned within the range of a predetermined region (51A) including the reference fixing part (52A).
B60T 17/04 - Arrangement of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
B60T 13/20 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs with control of pump driving means
To a first electronic control unit, three or more sensors excluding one predetermined sensor are connected. To a second electronic control unit, two sensors, which include one common sensor, of the three or more sensors, are connected. When the first electronic control unit does not determine that a sensor in a normal state is present among the three or more sensors, and the second electronic control unit determines that both of the two sensors are in the normal state, the electronic control unit controls the brake circuit based on the operation amount detected by at least one of the predetermined sensor or the common sensor.
This hydraulic pressure generation device PS comprises: an electric motor MT that outputs rotation power Tm; a conversion mechanism GH that outputs the rotation power Tm input to a rotation member BK as linear power Fn of a linear motion member BD; a piston NC that is inserted into a cylinder CC and increases hydraulic pressure Pc of the cylinder CC by being moved by the linear power Fn; a housing HG in which the cylinder CC is formed and which holds a sealing member SL1 for sealing the cylinder CC and the piston NC; and a rotation stop member MD that is fixed to the housing HG and prevents the linear motion member BD from rotating around the rotation axis of the rotation member BK. In the hydraulic pressure generation device PS, when parallel projection is performed in a direction perpendicular to the rotation axis, a projection Zms of a sealing groove Ms1 for fixing the sealing member SL1 and a projection Zam of a hole Amd for fixing the rotation stop member MD partially overlap.
In the present invention, a regenerative cooperation control device comprises: a switching control unit (M17) that is configured so as to execute switching control for switching regenerative braking force to friction braking force in situations where regenerative braking force is applied to a vehicle; and a correction unit (M19) that is configured so as to execute a correction process for correcting the braking force that has the higher response speed between the regenerative braking force and the friction braking force so such that the magnitude of the difference between the deceleration rate of the vehicle and a target deceleration rate will decrease when the switching control is being executed.
B60T 8/17 - Using electrical or electronic regulation means to control braking
B60W 10/04 - Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
B60W 10/08 - Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
B60W 10/18 - Conjoint control of vehicle sub-units of different type or different function including control of braking systems
B60W 10/188 - Conjoint control of vehicle sub-units of different type or different function including control of braking systems with wheel brakes hydraulic brakes
B60W 10/192 - Conjoint control of vehicle sub-units of different type or different function including control of braking systems with wheel brakes electric brakes
A fluid pressure control device includes a motor to drive a pump; a housing having an outer surface, and a first hole that opens in a first surface of the outer surface which faces the motor. The first hole accommodates the pump, and two second holes open in the outer surface. The two second holes are spaced apart in a first direction; and a current supply unit that allows current for driving the motor to flow passes through the housing. A through hole opens in the first surface and a second surface which is opposite to the first surface of the outer surface. The through hole has a first part located between the two second holes, and a width of the first part in the first direction is smaller than a width of the first part in a second direction along the second surface and orthogonal to the first direction.
B60T 8/36 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
81.
VEHICULAR CONTROL DEVICE AND VEHICULAR CONTROL METHOD
The present invention is provided with: a performance information acquisition unit (141) that acquires performance information; a reference output schedule determination unit (145) that determines, without using a drive response delay time and a braking response delay time, an output schedule of a required braking/driving force, which is the braking force required by the braking device and the driving force required by the driving device, in order to decelerate according to a deceleration plan in which an automatic traveling control causes the vehicle to come to a stop at a target stopping position; and a braking/driving force control unit (146) that causes a request for the driving force to the driving device according to the reference output schedule to be performed at a timing earlier than the reference output schedule by an amount corresponding to the drive response delay time acquired by the performance information acquisition unit (141), and causes a request for the braking force to the braking device according to the reference output schedule to be performed at a timing earlier than the reference output schedule by an amount corresponding to the braking response delay time acquired by the performance information acquisition unit (141).
B60W 30/00 - Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
B60W 10/04 - Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
B60W 10/18 - Conjoint control of vehicle sub-units of different type or different function including control of braking systems
A motion manager for a vehicle, includes one or more processors configured to: receive motion requests from a plurality of applications, one or more of the applications being travel applications for controlling at least one of an acceleration of the vehicle or a steering angle of the vehicle, and another one or more of the applications being human-machine interface (HMI) applications for implementing transfer of information from the vehicle to an occupant; perform arbitration of the motion requests that have been received; when the motion requests have been received from the HMI applications, calculate the instruction information based on a different type arbitration result obtained by arbitrating the motion requests from the HMI applications and the result of the arbitration of the motion requests from the travel applications; and output the calculated instruction information to a control device for the actuator.
A hydraulic pressure generation device (PS) comprises: an electric motor (MT) that outputs rotational power (Tm); a conversion mechanism (GH) that outputs the rotational power (Tm) that is input to a rotational member (BK) as linear power (Fn) of a linear motion member (BD); a piston (NC) that is inserted into a cylinder (CC) and that increases hydraulic pressure (Pc) in the cylinder (CC) by being moved by means of the linear power (Fn); and an intermediate member (BE) positioned between the piston (NC) and the linear motion member (BD). Furthermore, a pressing surface (Mpe) of the intermediate member (BE) is slidable on a bottom surface (Mtn, Mqn) of the piston (NC), and an end surface (Mqe) of the intermediate member (BE) is slidable on an end surface (Mpd) of the linear motion member (BD).
B60T 8/42 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition having expanding chambers for controlling pressure
The present invention is provided with: a performance information acquisition part (141) that acquires performance information; a required range determination part (142) that determines a required range in which it is estimated that a specified accuracy can be guaranteed; a necessary braking/driving force determination part (144) that determines necessary braking/driving force during travel under automatic travel control of a host vehicle; a controllability determination part (143) that determines a high-controllability device and a low-controllability device from among a driving device and a braking device; an allocation determination part (145) that determines, from among the braking/driving force determined by the necessary braking/driving force determination part (144), the braking/driving force to be allocated to the low-controllability device to be a constant value within the required range, and determines a portion borne outside of the constant value to be a value within the required range for the high-controllability device; and a braking/driving force control part (146) that, during the travel of the host vehicle, applies control so that driving force generated by the driving device and braking force generated by the braking device achieve the values determined by the allocation determination part (145).
A vehicle includes vehicle devices configured to adjust a lateral movement amount of the vehicle, and a steering wheel lock mechanism. The vehicle devices include a front-wheel steering device and a remaining device that is a device other than the front-wheel steering device. When there is an anomaly in the front-wheel steering device, a vehicle control device switches a state of the steering wheel lock mechanism from a deactivated state to an activated state. The control device adjusts the amount of lateral movement of the vehicle by activating the remaining device when rotation of the steering wheel is disabled.
A vehicle control device to be applied to a vehicle including parking brakes provided in association with right and left wheels and configured to be driven to bring the wheels into a non-rotatable state includes a processor. The processor is configured to acquire abnormality occurrence information on each of the right and left parking brakes. The processor is configured to, when an abnormality condition that a drive command is output to each of the parking brakes and one of the parking brakes has an abnormality is satisfied, control a device other than the parking brakes in the vehicle to suppress rotation of the wheel provided with the parking brake having the abnormality.
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
87.
Control device for vehicle, control method for vehicle, and non-transitory storage medium
A control device for a vehicle includes one or more processors configured to: perform feedback control on an acceleration of the vehicle by controlling a driving force of an internal combustion engine mounted on the vehicle based on a difference between a requested acceleration of the vehicle from an application and an actual acceleration of the vehicle; calculate a first predicted acceleration that is a predicted acceleration of the vehicle on an assumption that the internal combustion engine is controlled into a fuel-cut state; and control the internal combustion engine into the fuel-cut state without performing the feedback control when a coasting condition that is predetermined is satisfied and the first predicted acceleration is equal to or higher than a lower limit value that is predetermined as a negative value.
B60W 50/00 - Details of control systems for road vehicle drive control not related to the control of a particular sub-unit
B60W 10/06 - Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
B60W 10/188 - Conjoint control of vehicle sub-units of different type or different function including control of braking systems with wheel brakes hydraulic brakes
A braking control device includes an information acquisition unit that acquires vehicle condition information related to at least one of an external condition of a vehicle and an internal condition of the vehicle, and a mode acquisition unit that acquires, from among the plurality of control modes, a control mode according to an index output from a learner by inputting the vehicle condition information acquired by the information acquisition unit to the learner that has been subjected to machine learning for estimating the control mode suitable for the vehicle condition information.
An electric braking device includes an electric cylinder unit. The electric cylinder unit includes electric cylinder devices, a housing, and a circuit board accommodated in a board case. The electric cylinder devices are supported by the housing so as to be removable from the housing by being moved relative to the housing in a first X-axis direction. Electric motors of the electric cylinder devices are provided with male connectors, and the board case is provided with female connectors. Fitting between the male connector and the female connector is released by moving the male connector relative to the female connector in the first X-axis direction.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 13/66 - Electrical control in fluid-pressure brake systems
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
An electric braking device includes a plurality of electric cylinder devices and a circuit board that controls an electric motor of the electric cylinder devices. The plurality of electric cylinder devices and are disposed adjacent to each other in an alignment direction that is a radial direction of pistons with shaft lines of the pistons parallel to each other. The circuit board is disposed adjacent to the plurality of electric cylinder devices in an orientation in which a board surface of the circuit board is parallel to the shaft lines of the pistons and a longitudinal direction is oriented in the alignment direction.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 13/16 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs
B60T 13/20 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs with control of pump driving means
91.
VEHICULAR CONTROL DEVICE AND VEHICULAR CONTROL METHOD
This vehicular control device comprises: a performance information acquisition part (141) that acquires performance information; a compensation section time determination part (143) that determines, as compensation section time, the longer one of drive response delay time and braking response delay time; a required braking/driving force determination part (144) that determines, as a required driving force and a required braking force, a driving force and a braking force which maintain a relationship, in which the braking force is at least equal to or greater than the driving force, and satisfy conditions that the driving force and the braking force respectively fall within a driving force range and a motive force range; a required following time identification part (145) that identifies required following time estimated to be taken from the start of response to the realization of the required driving force and the required braking force; and a braking/driving force control part (147) that maintains the required driving force and the required braking force determined by the required braking/driving force determination part (144) at the starting of the vehicle until the compensation section time and the required following time subsequent thereto elapse.
An information processing device includes one or more processors. The one or more processors are configured to: acquire an actual lateral acceleration being an actual measured value of a lateral acceleration of a vehicle detected by an acceleration sensor mounted on the vehicle over a prescribed period that is predetermined; acquire an estimated lateral acceleration being an estimated value of the lateral acceleration over the prescribed period based on a parameter different from the actual lateral acceleration; calculate an error of the actual lateral acceleration with respect to the estimated lateral acceleration based on the estimated lateral acceleration and the actual lateral acceleration acquired over the prescribed period; determine that there is wheel loosening in the vehicle on condition that the calculated error is equal to or greater than a prescribed value that is predetermined.
This braking control device is provided with: an upper braking unit that, by causing servo pressure generated by a hydraulic-pressure generating unit to coincide with a target servo pressure computed on the basis of an amount of operation of a braking operation member, outputs a supply pressure; and a lower braking unit that is disposed between the upper braking unit and the wheel cylinders. The upper braking unit halts the hydraulic-pressure generating unit in the event of a first abnormality in which the servo pressure is insufficient, and continues operation of the hydraulic-pressure generating unit in the event of a second abnormality in which the servo pressure is sufficient but the supply pressure is insufficient. Further, the lower braking unit, in the event of the first or the second abnormality, increases the supply pressure and outputs same to the wheel cylinders.
B60T 8/17 - Using electrical or electronic regulation means to control braking
B60T 8/48 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure
A weight calculation device includes one or more processors and one or more memories. The one or more memories are configured to store a plurality of specific speed ranges in advance, the specific speed ranges being obtained by dividing a travel speed of a vehicle into a plurality of speed ranges. The one or more processors are configured to: acquire the travel speed of the vehicle, an acceleration of the vehicle, and a driving force of the vehicle while the vehicle is traveling; store a combination of the acquired acceleration of the vehicle and the acquired driving force of the vehicle in the one or more memories in a distinguishable manner for each of the specific speed ranges; and calculate a weight of the vehicle for each of the specific speed ranges based on a plurality of the combinations of the acquired acceleration and the acquired driving force.
A vehicle control device includes a command unit that generates a command value for an actuator and causes a vehicle to travel by outputting the command value to a control unit, a state quantity acquiring unit that acquires at least two values of a vehicle state quantity among a vehicle state quantity ideal value, a vehicle state quantity detection value, and a vehicle state quantity operation value, an event storage unit that stores multiple events that can occur when the vehicle on-board device is not functioning normally, an event acquiring unit that compares at least two values of the vehicle state quantity and acquires an event corresponding to a result of the comparison, and an anomaly determining unit that determines whether there is an anomaly in the vehicle on-board device by using a Bayesian network that includes, as a node, an occurrence probability of the event.
A braking control device 50 is made to function as: a stop-related value acquisition unit M15 that acquires a stop-related value such that the value decreases as a vehicle 10 approaches a predetermined stop position; a control unit M19 that, when the stop-related value becomes equal to or less than a threshold value, starts stop-time braking control for stopping the vehicle 10 in a state in which the braking force applied to the vehicle 10 is smaller than the requested braking force; and a threshold value setting unit M17 that, before the start of the stop-time braking control, sets the threshold value to a smaller value as the stop-related value decreases.
B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
In the present invention, a braking device 30 of a vehicle 10 adjusts the position of a vehicle body in the vehicle vertical direction by changing a braking force proportion which is, with respect to the sum of a front wheel braking force and a rear wheel braking force, the proportion occupied by the rear wheel braking force. A braking control device 50 for controlling the braking device 30 executes contact surface pressure reduction control for reducing the contact surface pressure between a seat surface of a seat and an occupant by controlling the braking device 30 so that the vehicle body is displaced downward with respect to the vehicle when the vehicle 10 decelerates.
B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
B60G 17/016 - Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
B60T 8/26 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
A vehicle motion controller includes a feedback controlling unit that executes feedback control in which a difference between a target acceleration corresponding to a request value from a driver assistance device and an actual acceleration of a vehicle is an input, thereby calculating a control amount used to reduce the difference, a request outputting unit that calculates a request longitudinal force based on the control amount, the request longitudinal force controlling an actuator, and an obtaining unit that obtains, as information that indicates availability, information indicating whether traction control is executed, the availability being a controllable range of the longitudinal force, wherein the feedback controlling unit prohibits the control amount from increasing when the traction control is executed.
A vehicular braking device (1) comprises a storage unit (31) that stores a control profile that indicates transitions in target values for first braking force generated by a first braking device (2) that has a relatively short response time and second braking force generated by a second braking device (8) that has a relatively long response time, a setting unit (100) that derives a first response time for the first braking device (2) and a second response time for the second braking device (8) for a control target point in time on the basis of the control profile and sets lead times on the basis of the first response time and the second response time, and a generation unit (101) that generates braking requests for the first braking device (2) and the second braking device (8) on the basis of the target values for the first braking force and the second braking force that correspond to points in time that are exactly the lead times after the control target point in time.
This electric braking device comprises: a cutoff valve 21 that switches a connection path 12, which connects a reservoir tank 10 and a wheel cylinder 11, between a communication state and a cutoff state; an electric cylinder 23 that is connected to a main flow path 12A, which is a portion of the connection path 12 located between the cutoff valve 21 and the wheel cylinder 11; and a control unit 33. The control unit 33 causes brake fluid to be discharged into the main flow path 12A by the electric cylinder 23 in a state in which the main flow path 12A is cut off by the cutoff valve 21, thereby causing brake fluid pressure to be generated in the wheel cylinder 11. In addition, even after the brake fluid pressure generated in the wheel cylinder 11 has decreased to atmospheric pressure due to suction of the brake fluid from the main flow path 12A via the electric cylinder 23, the control unit 33 maintains the cutoff state of the main flow path 12A via the cutoff valve 21.
B60T 8/42 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition having expanding chambers for controlling pressure
B60T 8/17 - Using electrical or electronic regulation means to control braking
B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
B60T 13/122 - Systems using both master cylinder and distributor valveStructural associations of master cylinder with distributor valve
patents
