A diagnostic apparatus acquires data for a motor that drives a door in a train carriage, in at least one of a case where the door is opened at a second speed lower than a first speed at which a passenger is to get on and off the train carriage, or a case where the door is closed at the second speed, the data relating to the driving of the door. The diagnostic apparatus diagnoses an abnormality in a traveling resistance of the door, based on the acquired data.
A diagnostic apparatus includes a drive mechanism configured to open or close a door panel, and includes a fastening mechanism configured to fasten the door panel to the drive mechanism. The diagnostic apparatus includes circuitry configured to acquire first data related to an operation of a door of a train carriage, during at least one of an opening operation or a closing operation of the door, and to diagnose an abnormality in the fastening mechanism based on the acquired first data.
B61D 19/02 - Door arrangements specially adapted for rail vehicles for carriages
E05B 77/14 - Specially controlled locking actions in case of open doors or in case of doors moved from an open to a closed position, e.g. lock-out prevention or self-cancelling
E05F 15/40 - Safety devices, e.g. detection of obstructions or end positions
A power supply circuit includes: an input terminal that receives an input voltage; an inductor; a switching circuit electrically connected to the inductor and configured to switch between a storing period for storing energy in the inductor and a discharge period for discharging the energy stored in the inductor; an output terminal that receives a current from the inductor in the storing and discharging periods; a transistor electrically connected to the inductor and serving as a portion of a path of a current flowing to the inductor in the storing and discharging periods. The output terminal outputs a voltage based on the storing period, the discharging period, and the input voltage. The transistor stops a switching operation that is used to switch between the storing and discharging periods, by preventing the current flowing to the inductor, in a signal processing period in which a signal processing circuit is processing a signal.
H02M 3/155 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
A diagnostic apparatus acquires time series data during a time period in which a door is closed, upon occurrence in a condition in which a door-side pin in a train carriage is maintained in a state where a locking device does not restrict the pin from moving downward, the time series data including first time series data of a position of the door, and second time series data of an output of a detector configured to detect the presence and absence of the fall of the pin. The diagnostic apparatus diagnoses, based on the acquired time series data, an abnormality in a positional relationship between the pin and a car-side recess in an opening and closing direction of the door that is in a locked state.
A permanent field magnet for a linear motor is provided. The permanent field magnet includes a plurality of permanent magnets arranged along a moving path of a mover; a first member that includes a soft magnetic material and is disposed between and in contact with mutually adjacent ones of the plurality of permanent magnets; and a suppressing portion configured to suppress application of a magnetic field from an armature to each of the permanent magnets.
H01F 1/12 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
A linear motor includes an armature and a field magnet that are disposed to face each other and configured to be subjected to relative movement. The armature includes a plurality of windings that are arranged along a direction of the relative movement. Each of the windings is wound around a first iron core. The field magnet includes a plurality of permanent magnets that are disposed to face both sides of the armature in a direction perpendicular to the direction of the relative movement, and are arranged along the direction of the relative movement. A ratio of a dimension of the first iron core to an arrangement pitch of the windings in the direction of the relative movement is in a range from 0.1 to 0.35.
A magnetic field apparatus includes a main magnet that generates a magnetic field with respect to an armature, a member made of a soft magnetic material and disposed adjacent to an end surface of the main magnet on a side opposing the armature, an auxiliary magnet that increases a magnetic flux of a magnetic pole of the main magnet on the side opposing the armature and disposed adjacent to the main magnet and the member in a relative moving direction between the magnetic field apparatus and the armature, and a restricting part that restricts the magnetic flux of the main magnet passing through an end surface of the member along a third direction that is perpendicular to both a first direction in which the main magnet and the armature oppose each other, and a second direction corresponding to the relative moving direction between the magnetic field apparatus and the aLmature.
H01F 1/12 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
H01F 7/08 - ElectromagnetsActuators including electromagnets with armatures
A magnetic field generator (1) including: a yoke (2); and a plurality of main magnetic pole magnets (3) and a plurality of secondary magnetic pole magnets (4), the main magnetic pole magnets and the secondary magnetic pole magnets comprising a rare earth sintered magnet, having magnetic pole orientations different from each other by substantially 90 , and being alternately arranged in a linear Halbach magnet array without gaps and fixed to the yoke, wherein near contact surfaces of the main magnetic pole magnets and the secondary magnetic pole magnets, a grain boundary diffusion layer (6, 8) is formed in which at least one of Dy or Tb being heavy rare earth elements or a compound of at least one of the Dy or the Tb is diffused into internal grain boundaries from the contact surfaces.
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
H02K 1/2783 - Surface mounted magnetsInset magnets with magnets arranged in Halbach arrays
10.
ARMATURE, LINEAR MOTOR, METHOD OF MANUFACTURING ARMATURE
An armature includes a plurality of cores arranged in a straight line and discontinuous with each other, a plurality of coils wound around each of the cores, and a holding section configured to hold the cores. At least one of the cores include division cores separate from each other and arranged in an axial direction thereof. Each of the division cores has a flange at a. contact surface thereof that is in contact with the holding section, and at least a portion of the contact surface protrudes toward the holding section to form the flange.
A linear motor includes an armature that includes a coil and a core made of a soft magnetic material, and a field magnet that includes a permanent magnet generating a magnetic field for the armature. One of the armature or the field magnet is a mover and the other of the armature or the field magnet is a stator, and the stator includes a first section and a second section. The armature and the field magnet are arranged such that the mover is interposed between the first and second sections, and at least one of the armature or the field magnet is configured to have an asymmetrical property between first and second magnetic actions. The first magnetic action is caused by the permanent magnet between the mover and the first section, and the second magnetic action is caused by the permanent magnet between the mover and the second section.
A permanent field magnet is disposed between two armatures parallel to each other, and includes a first field magnet section facing a first armature of the two armatures, and a second field magnet section facing a second armature of the two armatures that is different from the first armature. The first field magnet section includes a first main magnet that generates a magnetic field for the first armature and a first auxiliary magnet that increases magnetic flux of a magnetic pole of the first main magnet. The second field magnet section includes a second main magnet that generates a magnetic field for the second armature and a second auxiliary magnet that increases magnetic flux of a magnetic pole of the second main magnet. The first main magnet and the second main magnet, or the first auxiliary magnet and the second auxiliary magnet, are permanent magnets magnetized in the same direction.
A door opening/closing device is described that makes a person easily pull out an obstacle. A door opening/closing device includes: an opening/closing bar attached to one of doors, the opening/closing bar being configured to be actuated by an electric motor, the doors being opened and closed by the opening/closing bar being moved between an opened position and a closed position; a door closing state detecting part configured to detect whether the doors are in a closed state; a locking device configured to lock and unlock the doors; a lock pin configured to be moved to a locked position or an unlocked position by the locking device; an engaging member attached to the opening/closing bar, the engaging member including an engaging part configured to engage with the lock pin moved to the locked position, in a state in which the closed state is detected by the door closing state detecting part; a first spring provided between the opening/closing bar and the engaging member; and a locking control unit configured to issue a lock instruction to the locking device to cause the locking device to lock the doors, in a case in which the opening/closing bar is moved to the closed position by the electric motor and in which the closed state is detected by the door closing state detecting part.
Semiconductor switching elements are individually inserted between a plurality of power conversion units provided in parallel with each other through a DC link portion and a DC power supply unit for supplying DC power to each of the power conversion units to restrict the DC power supplied to the respective power conversion units. control circuit monitors a short-circuit current occurring in each of the power conversion units and turns off the semiconductor switching element connected to the power conversion unit where the short-circuit current flows to stop the power supplied to the power conversion unit.
H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
A moving body drive apparatus with a shortened length in a direction of movement, drives a moving body in a linear direction by a drive source. The moving body includes: a relay rotating body movable in a travel direction of the moving body by the drive source, is rotatable in a direction perpendicular to the travel direction and relays drive power to the moving body; a rotation converting body stationary relative to the moving body, engages with an outer circumference of the relay rotating body, and converts movement of the relay rotating body, into rotation; and a conveyance linear body coupled to the moving body engages with the outer circumference of the relay rotating body and moves in the travel direction due to rotation of the relay rotating body while moving in the travel direction.
A flowmeter includes: a transit time method unit having a sensor and a reception signal amplification control unit and a flow rate calculation unit which are connected to the sensor via a sensor selector switch; a pulse Doppler method having a reception signal amplification control unit and an integration calculation unit which are connected to the sensor; a transmission/reception timing control unit common to them; a measurement method selection control unit for controlling switching between the transit time method unit and the pulse Doppler method unit, and parallel operation; and a measurement value output selector switch for selecting the output of the transit time method unit and the pulse Doppler method unit. That is, the single flowmeter can perform flow rate measurement by the transit time method having no restriction on the measurement range as well as by the pulse Doppler method having an upper limit of the measurement range but enabling a highly accurate measurement.
17.
WEDGE AND WEDGE UNIT FOR USE IN ULTRASONIC DOPPLER FLOW METER
A wedge unit according to the present invention is used for an ultrasonic Doppler flow meter, being mounted on the outer wall of a pipe in which a fluid flows, supplying an ultrasonic wave to the fluid, receives the reflected wave and supplies the reflected wave to a flow rate calculation unit, comprises a wedge with one surface thereof being mounted on a part of the outer circumference of the pipe and on another surface thereof being equipped with an ultrasonic oscillator that generates the ultrasonic wave in response to an electric signal and receives the reflected wave; and an ultrasonic wave attenuation unit being mounted on the outer circumference of the pipe so as to include a position where an ultrasonic wave injected from the ultrasonic oscillator into the pipe by way of the wedge first reaches the outer wall of the pipe after being reflected by the inner wall thereof.
G01F 15/00 - Details of, or accessories for, apparatus of groups insofar as such details or appliances are not adapted to particular types of such apparatus
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