Provided is a noise removal filter 1 for removing noise on an input signal, wherein: the noise removal filter 1 comprises a periodic noise removal filter 11 for removing periodic noise from the input signal, a high-frequency removal filter 12 for removing high-frequency noise from an output signal of the periodic noise removal 11 filter, and a stability assessment unit 13 for monitoring the stability of the output signal of the periodic noise removal filter 11; before the stability assessment unit 13 has determined that the output signal of the periodic noise removal filter 11 is stable, the output signal of the periodic noise removal filter 11 is outputted without being processed by the high-frequency removal filter 12; and after it is determined that the output signal of the periodic noise removal filter 11 is stable, the signal processed by the high-frequency removal filter 12 is outputted.
Provided is a power regulator 1 that uses a circuit element 13, which capable of an ON operation only at a prescribed voltage or lower, to control on/off switching of supply of power from an alternating current power source 2 to a load 3 at a cycle that is an integer multiple of a half cycle of the alternating current power source 2, said power regulator 1 comprising a trigger signal output unit 11 for generating a trigger signal which provides an ON signal with respect to a switch circuit 13 that is provided on a power source supply line to the load 3 and that performs the on/off switching, said trigger signal providing the ON signal to the switch circuit 13 either continuously or intermittently during a time from a time point which is within a prescribed range centered on the center point of the half cycle prior to the half cycle for switching ON, to a time point which is within a prescribed range centered on the center point of the half cycle for switching ON.
G05F 1/45 - Regulating voltage or current wherein the variable is actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
3.
TEMPERATURE MEASUREMENT DEVICE AND ABNORMALITY DETECTION METHOD
A temperature measurement device 1 is provided with a measurement value discrimination unit (temperature discrimination unit 15) that calculates a measurement value from a sensor voltage produced by a resistance thermometer 2 that is a temperature sensor. The temperature measurement device 1 enables noise monitoring (abnormality sensing) to be realized relatively easily due to the provision of: one or more bias resistors disposed between the resistance thermometer 2 and a reference potential; a reference voltage measurement unit 12 that measures potential at at least one of the one or more bias resistors; and a notification output unit 14 that outputs an abnormality notification if the potential is not in a prescribed range.
G01K 7/20 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer in a specially-adapted circuit, e.g. bridge circuit
By using only this power adjuster, a harmonic component is easily calculated and displayed. This power adjuster which controls, through phase control, power supply from an AC power source to a load comprises: a current measurement unit that measures a current value of output current; a trigger angle calculation unit that calculates a trigger angle corresponding to a phase control method and a target load rate; a harmonic component calculation unit that calculates a harmonic component in the output current on the basis of the phase control method, the trigger angle, the current value, and a Fourier coefficient corresponding to the phase control method and the trigger angle; and a display unit that displays the harmonic component.
Provided is a power adjustment device for three-phase six-arm which controls, via phase control, the supply of power with respect to a load from a three-phase AC power source, said power adjustment device being capable of being used also for single phase, three-phase three-arm, etc. A power adjustment device 1 comprises: a power source waveform acquisition unit 12 which acquires phase information of a three-phase AC power source; AC control circuits 13A-C to which a thyristor is connected in anti-parallel; and a control unit 11 which, in a three-phase six-arm control mode, outputs a trigger signal based on a three-phase six-arm trigger angle and the phase information with respect to the thyristor compatible with the polarity of the phase information, which, in a single phase control mode, outputs a trigger signal based on a single phase trigger angle and the phase information with respect to the thyristor compatible with the polarity of the phase information, and which, in a three-phase three-arm control mode, outputs a trigger signal based on a three-phase three-arm trigger angle and the phase information with respect to the thyristor compatible with the polarity of the phase information.
H02M 5/257 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
Provided is a control device (1) for controlling a control target including a dead time component and having a plurality of inputs including a first input and a second input and a plurality of outputs including a first output and a second output, the control device comprising: a feedback controller (10) that controls the control target; a reference model unit (20) that includes the dead time component and outputs a desired response waveform; difference units (41, 42) that calculate a first difference and a second difference respectively, the first difference being a difference between the first output of the control target and the response waveform from the reference model unit, the second difference being a difference between the second output of the control target and the response waveform from the reference model unit; and a learning controller (30) that receives the first difference and the second difference as training signals to produce an output, which is then added to the output of the feedback controller and input to the control target, and performs learning such that the first difference and the second difference are minimized or become equal to or smaller than a preset threshold value due to change in output from the learning controller.
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
7.
Power control device and power supply allocation method
The power control device performs power supply to each of a plurality of loads (231 to 234) by a time-proportional control, where a maximum load factor and a current value or a power value during on-control are made to correspond to each of the plurality of loads. The power control device 1 is characterized by being provided with an automatic power supply allocation unit 12 that performs: processing of calculating a combination of loads in which a total value of the current value or the power value during the on-control, which are made to correspond to the respective loads, does not exceed a limiter value that specifies an upper limit to the total of the current value or the power value output to the plurality of loads; processing of setting a period in which the respective loads in the combination are simultaneously on-controlled and subtracting the period from the maximum load factor of each of the loads in the combination; and automatic allocation processing of power supply to each load by repeating each of the above processing until all maximum load factors of the respective loads become zero.
H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
H02J 3/14 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
To provide a control device that causes a neural network to perform learning without any effects of dead time even for a dead-time system and that has the capability of improving transient characteristics for a command input. A control device includes a feedback controller configured to control a control target including a dead-time component, a reference model unit including a dead-time component and configured to output a desired response waveform for an input. A learning based controller is configured to perform learning in a manner that a change in an output from the learning based controller minimizes an error between an output of the control target and an output of the reference model unit or causes the error to be a predetermined threshold or smaller, the output from the learning based controller being added to an output of the feedback controller and input to the control target.
A power regulator 1 for controlling the power supply from an AC power supply 3 to a load 2 by means of phase control, said power regulator 1 being provided with: a trigger circuit 13 which has a positive side current control element 13a and a negative side current control element 13b and controls the output from the AC power supply 3 to the load 2; a power supply polarity acquisition unit 12 which acquires information relating to the polarity of the AC power supply 3; trigger control units (a control unit 11a for a unidirectional thyristor 1, a control unit 11b for a unidirectional thyristor 2) which output a trigger signal for the positive side current control element 13a and a trigger signal for the negative side current control element 13b in accordance with the power supply polarity acquired by the power supply polarity acquisition unit 12; and a voltage detection unit 14 which detects the voltage difference between the connection line from the AC power supply 3 to the power supply polarity acquisition unit 12 and the power supply line from the AC power supply 3 to the load 2. The power regulator 1 switches between the trigger signal for the positive side current control element 13a and the trigger signal for the negative side current control element 13b in accordance with the result of the detection by the voltage detection unit 14.
G05F 1/455 - Regulating voltage or current wherein the variable is actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load with phase control
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
A power regulator 1 controls the supply of power from an AC power source 3 to a load 2 by means of phase control, and is provided with: a trigger circuit 13 that has a positive-side current control element 131 and a negative-side current control element 132, and that controls an output from the AC power source 3 to the load 2; a power source polarity acquisition unit 12 that acquires information related to the polarity of the AC power source 3; a trigger control unit 11 that outputs, in accordance with the polarity of the power source acquired by the power source polarity acquisition unit 12, a trigger signal to the positive-side current control element 131 or a trigger signal to the negative-side current control element 132; and an output state detection unit 14 that detects whether or not power is output to the load 2. In a state in which a power output to the load 2 has been started, when the output state detection unit 14 does not detect the power output, the power regulator 1 switches the trigger signal to the positive-side current control element 131 with the trigger signal to the negative-side current control element 132.
G05F 1/455 - Regulating voltage or current wherein the variable is actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load with phase control
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
11.
SINGLE-PHASE/THREE-PHASE SHARED POWER REGULATOR AND THREE-PHASE SIX ARM PHASE CONTROL METHOD
This single-phase/three-phase shared power regulator includes: a power supply phase acquisition unit (power supply waveform acquisition unit 12) that acquires phase information of a line voltage of an AC power supply; an AC current control circuit 13 to which unidirectional current control elements (131, 132) are connected in anti-parallel; a trigger angle calculation unit that, in a single-phase control mode, calculates a trigger angle for a single-phase AC power supply and that, in a three-phase control mode, calculates a trigger angle for a three-phase AC power supply; and a trigger control unit that, in the single-phase control mode, outputs, on the basis of the phase information and the trigger angle for the single-phase AC power supply, a first trigger signal for the unidirectional current control element matching the polarity of the phase information and that, in the three-phase control mode, outputs a second trigger signal based on the phase information and the trigger angle for the three-phase AC power supply and a third trigger signal delayed 60° from the second trigger signal to the unidirectional current control element matching the polarity of the phase information. Consequently, the single-phase/three-phase shared power regulator 1 can switch between control for the single-phase AC power supply and control for the three-phase AC power supply.
G05F 1/455 - Regulating voltage or current wherein the variable is actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load with phase control
H02M 5/257 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
Provided is a power control device 100 comprising: a current detector 31 that measures a combined current value obtained by combining currents flowing through a plurality of loads 1-4; and an output calculation unit 11 that calculates a correction value obtained by dividing a total value of products of operation output values for the loads 1-4 and rated current values of the loads 1-4, respectively, by the combined current value obtained by the current detector 31, and that performs power supply control for the loads 1-4 on the basis of a corrected operation output value that is a product of the operation output value and the correction value for each of the loads 1-4, in which in a system that heats or cools a workpiece by means of a plurality of loads, heating control or cooling control can be performed in which an effect of a fluctuation in load characteristics is reduced.
The present invention provides a control device comprising a control unit (1) which includes a proportional element, an integral element, and a derivative element and which causes a control quantity obtained as the output from an object of control to be a given set value, a correction unit (5) that corrects the control quantity fed back to at least the integral element of the control unit (1) by adding or subtracting a computed correction quantity, and a correction quantity computation unit (4) that computes the correction quantity for the correction unit (5).
A control device 1 controls a control subject 22 on the basis of a measurement value PV and a target value SV. The control device 1 is provided with a restoration processing unit 111 that, as a process of restoration from power supply abnormalities such as power failure, performs a control process in an initial condition when a difference between the measurement value PV and the target value SV at the time of restoration has exceeded an operation switching reference value and performs a control process in a restart condition when a difference between the measurement value and the target value at the time of restoration is not more than the operation switching reference value. The operation switching reference value is obtained by multiplying a measurement value change rate of the control subject 22 by reference time.
This control device 1 that calculates an operation amount for controlling an object to be controlled on the basis of a measurement value and a target value comprises: a storage unit 12 which stores a control waste time determined on the basis of the measurement value obtained when a predetermined operation amount is input at a reference time, and a reference value determined on the basis of the measurement value obtained when the predetermined operation amount is input at the reference time; and a notification output unit 113 which, after the lapse of the waste time from an abnormality detection start time when the operation amount exceeds an abnormality detection start output that is the threshold value, outputs abnormality state information on the basis of the comparison result of the value based on the measurement value and the reference value, whereby in the abnormality detection method that does not require a current measuring unit, the time until the disconnection is detected is shortened as compared with the conventional method.
This temperature controller 100 calculates a ratio between a control target value of a temperature control target 220 and an upper limit value/lower limit value of a steady temperature range allowed by sensors 231 to 23N in a steady state of the temperature control target 220. A pseudo-measurement value is calculated from said ratio and a maximum value/minimum value of a measured value. Since the temperature controller 100 performs a control by using this pseudo-measurement value as a current measured value, measurement values of the sensors 231 to 23N in the steady state can be automatically controlled to fall within the steady temperature range.
A computation device 100 comprises a computation unit 110 and carries out filter computation having a delay element when measured values from a sensor, or the like, are input into the computation unit 110. At that time, a determination is made as to whether there has been a value change greater than or equal to a prescribed threshold between preceding and subsequent data, and if there has been such a change, computation is carried out after a past output value to be used for filter computation is replaced with the current measured value.
This temperature estimation device 100 comprises a temperature estimation unit 110 that estimates the temperature at an estimation point from a sensor input pertaining to a measurement point by using a combination of a first numerical formula and a second numerical formula in which heat transmission is modeled. The present invention makes it possible to estimate the temperature at the estimation point using only simple basic arithmetic operations.
G01K 3/10 - Thermometers giving results other than momentary value of temperature giving differences of valuesThermometers giving results other than momentary value of temperature giving differentiated values in respect of time, e.g. reacting only to a quick change of temperature
19.
POWER CONTROL DEVICE AND POWER SUPPLY ALLOCATION METHOD
This power control device performs power supply to each of a plurality of loads (231 to 234) by a time-proportional control, wherein the maximum load factor and a current value or a power value during on-control are made to correspond to each of the plurality of loads. The power control device 1 is characterized by being provided with a power supply automatic allocation unit 12 that performs: processing of calculating a combination of the loads in which the total value of the current values or the power values during the on-control, which are made to correspon to the respective loads, does not exceed a limiter value that specifies an upper limit to the total of the current values or the power values output to the respective loads; processing of setting a period in which the respective loads in the combination are simultaneously on-controlled and subtracting the period from the maximum load factor of each of the loads in the combination; and automatic allocation processing on the power supply to each load by repeating above each processing until all the maximum load factors of the respective loads become zero.
H02J 3/14 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
Provided is a control device having a neural network with the ability to perform learning without being affected by dead time even in a dead time system and improve a transient response to a command input. This control device (1) comprises: a feedback controller (10) which controls a control target including a dead time element; a reference model unit (20) which includes a dead time element and outputs a desired response waveform for an input; and a learning controller (30) which produces an output which is added to the output of the feedback controller and inputted to the control target and which performs learning such that the error between the output of the reference model unit and the output of the control target caused by a change in the output from the learning controller is either minimized or less than or equal to a predetermined threshold value.
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
Provided is a power control device 100 comprising: a current detector 31 that measures a combined current value obtained by combining currents flowing through a plurality of loads 1-4; and an output calculation unit 11 that calculates a correction value obtained by dividing a sum of products of operation output values for the loads 1-4 and rated current values of the loads 1-4, respectively, by the combined current value obtained by the current detector 31, and that performs power supply control for the loads 1-4 on the basis of a corrected operation output value that is a product of the operation output value and the correction value for each of the loads 1-4, wherein in a system that heats or cools a workpiece by means of a plurality of loads, heating control or cooling control can be performed in which an effect of a fluctuation in load characteristics is reduced.
This power control device 100 comprises: a current detector 31 which measures a combined current value obtained by combining currents flowing through a plurality of loads 1-4; and an output calculation unit 11 which calculates a correction value, which is a value obtained by dividing the total value of a product of the operation output value for each of the loads 1-4 and the rated current value of each of the loads 1-4 by the combined current value obtained by the current detector 31, and performs power supply control for each of the loads 1-4 on the basis of a corrected operation output value that is a product of the operation output value for each of the loads 1-4 and the correction value, thereby being capable of performing a heating control or a cooling control with reduced influence of fluctuations in load characteristics, in a system that heats or cools a workpiece by using a plurality of loads.
The present invention is an attachment fixture 1 whereby, when a unit comprising a flange that presses against an opening in a power distribution panel is inserted into the opening, movement of the unit in a direction of detachment from the opening is restricted, thereby attaching the unit to the power distribution panel, the fixture comprising: a base 12 that is attached to the unit; and a locking part 11 that is provided so as to be rotatable with respect to the base 12 such that the amount of protrusion, toward the opening, in the detachment direction of the unit when in a locked position is greater than the amount of protrusion in the detachment direction when in an unlocked position, thereby generating pressing force that presses the unit against the power distribution panel when in the locked position.
nnn is calculated through the use of a prescribed formula (S407) to carry out lag compensation processing on signal values obtained in the sine wave noise removal step.
G01D 3/032 - Measuring arrangements with provision for the special purposes referred to in the subgroups of this group mitigating undesired influences, e.g. temperature, pressure affecting incoming signal, e.g. by averagingMeasuring arrangements with provision for the special purposes referred to in the subgroups of this group mitigating undesired influences, e.g. temperature, pressure gating undesired signals
25.
TEMPERATURE REGULATOR AND FAILURE DETECTION METHOD
This temperature regulator 100 is provided with: an output unit 110; a control state determination unit 120 which outputs a result of determination as to whether the control state of a to-be-controlled object is in a heating state or a cooling state; a failure detection unit 130 which detects failure in a control loop system on the basis of PV and a predetermined failure detection time. The predetermined failure detection time is set separately for the heating state and the cooling state.
An electric current measurement apparatus provided with: an electric current measurement signal selection output unit 12 for switching and outputting electric current measurement signals from electric current measurement instruments 22 provided respectively to power supply routes for each of a plurality of loads 6; and a microcomputer 11 for receiving an output ON signal or an output OFF signal of power supply to each of the plurality of loads 6, designating a load 6 in which the period for which the output ON signal or the output OFF signal is received is continuous for at least a predetermined time as a steady-state load, measuring the electric current of a measurable unmeasured load, which is a load that is determined to be a steady-state load and that has an unmeasured electric current value, and designating the load 6 for which the electric current is measured as a measured load.
A temperature controller 100, provided with an output unit 110, an evaluation unit 120, and a display unit 130, and configured to evaluate the control result for a control object, by performing, for each control item, a comparison with an evaluation criterion. The evaluation criterion is a control result for a case in which a PID constant calculated by auto tuning is used. The evaluation criterion and the control result are compared, and evaluation results are displayed on a display unit 130 as a two-dimensional map.
A comparison circuit for outputting the result of a high/low comparison of a reference signal and a comparison signal is provided with: two hysteresis comparators 2A and 2B; input circuits 1A and 1B that each input a reference signal and a comparison signal to the two hysteresis comparators 2A and 2B, respectively; bias circuits 3A and 3B that apply different biases to the reference signals input to the two hysteresis comparators 2A and 2B; and an output circuit 5 which inverts an output signal from High to Low or from Low to High on the basis of an output inversion from High to Low of one of the two hysteresis comparators 2A and 2B, and which inverts the output signal from Low to High or from High to Low on the basis of an output inversion from Low to High of the other hysteresis comparator. Thus, the comparision circuit is configured to produce no delay in the comparison result.
This control device performs calculation of an operation amount according to a PID calculation based on a program pattern for which a plurality of target values of a control object are set, and on a measurement value of the control object, the control device comprising: a partition boundary value setting unit 111 that sets as the partition boundary value a value that is between adjacent target values when a plurality of target values included in the program pattern are aligned in order of size; a storage unit 12 in which are stored PID constants corresponding to each partition determined by the partition boundary value; a PID constant selection unit 112 that determines to which of the partitions the measurement value of the control object corresponds, and selects the PID constant associated with that determined partition; and a PID calculation unit 114 that performs calculation processing of the operation amount by PID calculation using the PID constant selected by the PID constant selection unit 112.
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
In the present invention, if a measurement value changes, the difference between the measurement value and a set value is reduced and the measurement value is caused to converge towards the set value. The present invention comprises: a PID control unit (20) that, by performing PID control, causes a measurement value to be equal to a predetermined set value; and a set value changing unit (10) that, if the measurement value changes by an amount greater than or equal to a predetermined threshold when the measurement value has been stable and has been at the set value or a value close thereto, changes the set value for a prescribed time and by a prescribed amount in a direction opposite the direction in which the measurement value changes. The prescribed amount by which the set value is to be changed is determined on the basis of a proportional band for PID control, and the prescribed time during which the set value is to be changed is determined on the basis of an integrated time for PID control.
A connection terminal device is provided that comprises: a terminal member 13 having a gap section formed with an electroconductive elastic member, a conductive wire W being inserted in the gap section, and the gap section being closed by elastic force; a casing having the terminal member 13 inside; and a turning knob member 12 with which the gap section is opened in resistance to the elastic force of the terminal member 13 by turning the turning knob member 12, whereby the connection operation for the conductive wire W does not require a tool such as a screwdriver, and the operation method can be made intuitively and quickly understandable.
This current and current-leakage detection device 100 uses an outbound current detector 110 and inbound current detector 120 to measure the current flowing through a load and detects current leakage while measuring current. Further, this power control device 100' has a control unit 150 that outputs a control signal configured such that power supply to only one of the loads is turned on. Additionally, the control unit 150 outputs a control signal configured such that for each load, the ratio within a fixed period of the time that the supply of power to the load is on to the time that the supply of power to the load is off is kept at an operation output value set for the load, and power supply to only one of the loads is turned on.
The present invention identifies a parameter and an adjustment direction for the parameter with respect to an adjustment target for a PID control device. A control device adjustment assistance device (10) assists with adjustment of each parameter of a proportional element, an integral element and a differential element of a PID control device (20). A notification unit (12) outputs a parameter adjustment guide in a form detectable by a user. A waveform measurement unit (11): derives a first ratio between the phase difference of the proportional output and the differential output of the PID control device and a quarter cycle of the proportional output or the differential output; causes the notification unit to output a parameter adjustment guide indicating that the differential element is strong if the first ratio is less than a predetermined first threshold value; causes the notification unit to output a parameter adjustment guide indicating the proportional element is strong if the first ratio is at least the predetermined first threshold value and not greater than a predetermined second threshold value; and causes the notification unit to output a parameter adjustment guide indicating the proportional element is weak or the integral element is strong if the first ratio is greater than the predetermined second threshold value.
14144, sets the temperature control zone having the largest difference as a master zone, and sets the other temperature control zones as slave zones. Thus, the temperature control device sets a master zone automatically.
This method for manufacturing a chromel-alumel thermocouple is characterized in that: a thermocouple substrate is held in a substrate chamber that has had a vacuum created therein, chromel and alumel film materials are introduced into a material chamber, the inside of the material chamber is made to have an inert gas atmosphere, nanoparticles of a particle size not greater than 200 nm are formed by means of the heat-induced evaporation of the film materials inside the material chamber through irradiation with laser light and the condensation in the inert gas atmosphere of the film materials subjected to heat-induced evaporation, the nanoparticles and inert gas are introduced into the substrate chamber as a gas flow via a supersonic nozzle, and the nanoparticles are deposited in a preset shape, as a thermocouple, through the spraying of the gas flow onto the substrate while the arrangement of the supersonic nozzle and substrate is adjusted. As a result, it is possible to deposit an alumel film and chromel film having fine particle sizes and preferred compositions on a substrate and manufacture a chromel-alumel thermocouple quickly and with high material efficiency.
G01K 7/02 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using thermoelectric elements, e.g. thermocouples
H01L 35/20 - Selection of the material for the legs of the junction using inorganic compositions comprising metals only
H01L 35/34 - Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
36.
FLOW RATE CONTROL DEVICE, FLOW RATE CONTROL PROGRAM, AND FLOW RATE CONTROL METHOD
A flow rate control device for controlling the flow rate of a fluid in a fluid supply path provided with a flow rate meter and an opening/closing valve, wherein the flow rate control device is provided with: a flow rate value setting unit in which a flow rate setting value for the fluid is set; a flow rate control unit for controlling the opening/closing of the opening/closing valve on the basis of an output value for controlling the flow rate; a deviation integral value calculation unit for integrating the difference between the flow rate setting value and a flow rate measurement value inputted from the flow rate meter, and thereby calculating an excess/deficient flow rate supply amount; and an output corrective computation unit for calculating a corrective value for correcting the output value, for correcting the supply amount of the fluid corresponding to the excess/deficient flow rate supply amount, and a correction period in which the corrective value is used.
Provided is a PID control device with a startup tuning function to calculate PID parameters used for PID control of an object to be controlled before starting the PID control. The PID control device is provided with: a velocity change measuring unit for measuring a velocity change in temperature of the object to be controlled; and a level division determining unit for determining boundaries of levels of the PID control that uses the calculated PID parameters, on the basis of response characteristics of the velocity change in temperature as measured by the velocity change measuring unit.
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
G05D 23/19 - Control of temperature characterised by the use of electric means
38.
TEMPERATURE CONTROLLER AND COMMUNICATION CONVERTER
This temperature controller (100) is provided with a communication unit (110) and a processing unit (120), and is configured such that a value of a communication standby time and a node address of its own do not overlap those of another tempearture controler. The temperature controller (100) is set as a slave in a start-up time; and when there is no communication during the communication standby time, the temperature controller (100) transmits, to a PLC (200), the node address of its own and a signal for setting the temperature controller (100) itself as a master, and is operated as the master. Thus, this temperature controller may automatically complete the setting of the master/slave even in a situation, in which a master device is not set.
1NN, setting, as an upper-limit operation amount, a restrictive output limiter value obtained by multiplying a predetermined output limiter value set for the temperature control zone by a total power restriction coefficient, which is common to all of the temperature control zones, wherein the predetermined output limiter values for the temperature control zones are set so as to equalize the time it takes for each temperature control zone to reach a target temperature; calculating a warm-up time scale factor, which is the ratio of a calculated reference warm-up time value obtained by substituting reference conditions into an approximate expression, relative to a calculated warm-up time value obtained by substituting desired setting conditions into the approximate expression, wherein the approximate expression is obtained by approximating the warm-up characteristics of a controlled object to a first order lag; and calculating an estimated warm-up time by multiplying an actual warm-up time measured under said reference conditions by the warm-up time scale factor.
This temperature control device 100 is provided with a period calculation unit 110. On the basis of an integrated value obtained by integrating a load factor calculated from a preset target value and a control period of an on-off control, the period calculation unit 110 calculates a lower limit value of a control period in which a warning indicating disconnection or deposition in an object to be controlled is detectable.
In the present invention, a correction amount calculation unit 30 acquires operation amount time-series data and multi-point temperature time-series data for a control subject when a target value of an input channel is sequentially changed. An operation amount impact matrix Cmv and a temperature impact matrix Ctemp, in which unit pulse response time-series data, respectively obtained on the basis of the time-series data for the operation amount and the temperature, are obtained. Operation amount time-series data and multi-point temperature time-series data when a disturbance is applied are acquired, and a known operation amount vector Mref and a known temperature vector Tref are obtained. Using a function based on the distribution in respect to an average temperature of predicted multi-point temperatures of the control subject as an evaluation function for minimizing, and setting as a constraint condition the operation amount being kept within a predetermined range, the parameters of the evaluation function and the constraint condition are calculated from the obtained data, and a correction amount vector θ of a target value for minimizing the evaluation function under the constraint condition is calculated. The target value is changed in accordance with the calculated correction amount vector θ to control the control subject.
In this zero-crossing detection device 1: an integral calculation unit 140 calculates integrals of an alternating-current signal, and records four integrals S1' to S4' in a recording unit 150; and a zero-crossing detection unit 160 determines the maximum value of said S1' to S4', and detects zero-crossings of the alternating-current signal by an arithmetic expression corresponding to the determination result. Thus, it is possible to provide a zero-crossing detection device that uses a general-purpose input circuit, and that is less likely to be affected by noise and can be used for other purposes.
An integral calculation unit 140 calculates integrals of an alternating-current signal, and records four integrals S1' to S4' in a recording unit 150. A zero-crossing detection unit 160 determines the maximum value of said S1' to S4', and detects zero-crossings of the alternating-current signal by an arithmetic expression corresponding to the determination result. Thus, it is possible to provide a zero-crossing detection device 1 that uses a general-purpose input circuit, and that is less likely to be affected by noise and can be used for other purposes. Further, a measurement value computation unit 180 computes an average value or an effective value of the alternating-current signal on the basis of the integrals recorded in the recording unit 150. Thus, zero-crossing detection and the computation of an average value or effective value of the alternating-current signal can be executed simultaneously.
With the present invention, the output difference at each point (the temperature difference between multiple points, for example) as well as the transient characteristics of the average of the output of each point (the average temperature, for example) are controlled to desired characteristics. A control device (10) controls a control object having a plurality of measurement points and a plurality of inputs that correspond to the plurality of measurement points, wherein the control device (10) comprises: a first control element (11) that, with respect to a first partial control object (1A) for which the measurement point among the measurement points that has a slower response to an input than the response of other measurement points is taken as the output, and for which the input corresponding to the measurement point is taken as the input, controls the physical quantity for that measurement point; and a second control element (16) that, with respect to a second partial control object (1B) for which the measurement point among the measurement points that is not the measurement point of the first partial control object (1A) is taken as an output, and for which the input corresponding to the measurement point is taken as the input, controls the physical quantity for that measurement point. A target value (SV2) for the measurement point of the second partial control object (1B) is determined on the basis of an output (PV1) of the first partial control object (1A), and is given to the second controller (16).
G05B 11/32 - Automatic controllers electric with inputs from more than one sensing elementAutomatic controllers electric with outputs to more than one correcting element
This power control device 400 controls power supply using a continuous proportional control method, and is provided with a control signal generation unit 421 and a forcing output signal generation unit 460. The forcing output signal generation unit 460 generates both a forcing output request signal 460-1 requesting to forcibly change a control signal 421-1, and a forcing output state signal 461-2 for forcibly setting the state of the control signal 421-1. The control signal generation unit 421 generates the control signal 421-1 on the basis of the forcing output request signal 460-1 and the forcing output state signal 461-2, making it possible to maintain an output matching a preset operational output value while performing an output operation using the continuous proportional control method, even if the control signal 421-1 is forcibly changed to a desired state (output ON or output OFF).
G05F 1/45 - Regulating voltage or current wherein the variable is actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
For a cascade control, the present invention is provided with: an elapsed time measurement unit 6 which performs a process of monitoring the temperature of a control target and detecting a timing at which the temperature of the control target passes a set temperature, and measures an elapsed time from a previous passing timing to a current passing timing; and a time calculation unit 7 which calculates an end time of automatic tuning by using the elapsed time measured by the elapsed time measurement unit 6, wherein a time presenting unit 8 displays the end time of automatic tuning calculated by the time calculation unit 7. Accordingly, for the cascade control, a user can know the end time of automatic tuning.
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
If the value of a reference sensor among a plurality of sensors which measure the temperature of the same object to be controlled exceeds a prescribed value, the sensor used for measurement is switched (S310, S320, S340, S350) to a switching destination sensor. In switching processing, a value corrected in proportion to a switching time set in advance is outputted (S330) as the sensor value during the switching time, to enable sudden changes in the measurement value during switching of the sensor to be reduced.
The present invention is configured so as to comprise: a high-pass filter (2) that eliminates an offset included in an AC signal Vin input from a signal input terminal (1); and a waveform restoration unit (3) that, using a time constant τ of the high-pass filter (2), restores the waveform of the AC signal Vin prior to being input to the high-pass filter (2), such restoration being from an AC signal Vout in which the offset was eliminated by the high-pass filter (2). Due to this configuration, the waveform distortion of the AC signal Vout, which is distorted by the elimination of the offset by the high-pass filter (2), is compensated. As a result, the waveform of the AC signal Vin prior to being input to the high-pass filter (2) can be restored after elimination of the offset included in the AC signal Vin.
The present invention is provided with a determination unit (15) which compares each of a plurality of difference values ΔTM, ΔTS-1, ΔTS-2 calculated by a difference value calculation unit (14), with an allowable difference value Val for measurement values with respect to a target value Ttgt that changes with the passage of time, and determines whether a difference value greater than the allowable difference value Val is present among the difference values ΔTM, ΔTS-1, ΔTS-2. A target value control unit (16) continues to change the target value Ttgt if the determination unit (15) determines that a difference value greater than the allowable difference value Val is not present, and stops changing the target value Ttgt if the determination unit (15) determines that a difference value greater than the allowable difference value Val is present.
The present invention makes it possible to detect a thermocouple short circuit without outputting to an object of temperature control by determining, during a period when the temperature around the terminals that the thermocouple is connected to is changing, whether there has been a change in the electromotive force of the thermocouple corresponding to the temperature change (S301–S304) and determining that there is a short circuit if it has been determined that there has been no change in the electromotive force of the thermocouple corresponding to the temperature change (S304→S306).
G01K 7/02 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using thermoelectric elements, e.g. thermocouples
G01K 15/00 - Testing or calibrating of thermometers
Provided is an AC power conditioner that includes a function by which control of the supply of power to a load is carried out by phase control, and the effective value of output voltage or output current supplied to the load is measured, wherein the effective value of an output voltage or output current value is more accurately measured, as a result of the provision of the following: a measurement unit that measures, at a prescribed sampling timing, the instantaneous value of output voltage or output current supplied to the load; an effective value calculation unit that calculates the effective value of the output voltage or output current on the basis of the measured instantaneous value; and a correction unit that corrects a difference which is based on the deviation between a trigger point in phase control and a sampling point for measuring the instantaneous value.
G05F 1/455 - Regulating voltage or current wherein the variable is actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load with phase control
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
09 - Scientific and electric apparatus and instruments
Goods & Services
Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment; fire-extinguishing apparatus; temperature controllers; water temperature regulators; temperature matrix regulators; temperature regulators for vehicle engines; process controllers [electronic]; temperature indicators; digital thermometers, not for medical purposes; process monitors; electronic control apparatus; numerical control apparatus; analogue control apparatus; level indicators; temperature sensors; pressure sensors; electric switches; electric relays; power controllers; communication protocol converters; digital indicators for temperature and process measurements; pressure indicators; recording apparatus; data loggers and recorders; metric converters; measuring converters; electrical converters; electric power converters; signal convertors; frequency convertors; analogue to digital converters; digital to analogue converters; pressure-to-current converters.
An AC power regulator controlling power supply to a load by using phase control, that: calculates an estimated output power value on the basis of preset voltage information for a power supply connected to the load and on the basis of a measurement value for current that flows to the load; and performs simulated constant power control, on the basis of the difference between this estimated output power value and a target power value (the product of an applied target load factor and a preset maximum target power value). As a result, an AC power regulator can be obtained that has reduced cost, is more compact, and, even for a load having resistance value fluctuation as a result of deterioration over time, etc., can perform control that follows this fluctuation.
G05F 1/45 - Regulating voltage or current wherein the variable is actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
An AC power regulator controlling power supply to a load by using phase control, that: calculates an estimated output power value on the basis of preset voltage information for a power supply connected to the load and on the basis of a measurement value for current that flows to the load; and performs simulated constant power control, on the basis of the difference between this estimated output power value and a target power value (the product of an applied target load factor and a preset maximum target power value). As a result, an AC power regulator can be obtained that has reduced cost, is more compact, and, even for a load having resistance value fluctuation as a result of deterioration over time, etc., can perform control that follows this fluctuation.
G05F 1/45 - Regulating voltage or current wherein the variable is actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
This AC power regulator controls the supply of power to a load by means of phase control, and is provided with: a target voltage calculation unit 101 that calculates a target voltage, on the basis of a given target value and a rated voltage of a load power source 3; a measurement unit 107 that measures an output voltage; a target load factor correction value calculation unit 103 that calculates a target load factor on the basis of the ratio of the output voltage to the target voltage; and an output estimation unit 109 that calculates, on the basis of an output voltage value of the previous control cycle and the target load factor of the previous control cycle, an estimated output voltage of a previous control cycle at an ignition angle at which the output becomes largest, wherein the target load factor correction value calculation unit 103 calculates the target load factor of the present control cycle on the basis of the ratio of the estimated output voltage of the previous control cycle to the target voltage of the current control cycle. Thus, an AC power regulator that has high responsiveness and that can execute control so as to match the output voltage with the target voltage even when the power supply voltage fluctuates is provided.
G05F 1/455 - Regulating voltage or current wherein the variable is actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load with phase control
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
56.
LOAD CONTROL DEVICE AND CURRENT MEASUREMENT METHOD FOR LOAD CONTROL DEVICE
In the present invention, a load current calculation unit 130 calculates the load current value of each load in a plurality of loads for which calculation is to be performed using current values flowing to the plurality of loads measured by one current detection unit 120. The load current calculation unit 130 calculates the load current value of each load in the plurality of loads by measuring, during a scan period, a combined current value flowing to the plurality of loads with only the output to any one load of the plurality of loads turned off and the outputs to the other loads turned on, carrying out this process in turn for all the loads, and processing all of the combined current values in accordance with Equation 5 .
G01N 27/26 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variablesInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by using electrolysis or electrophoresis
G01R 31/00 - Arrangements for testing electric propertiesArrangements for locating electric faultsArrangements for electrical testing characterised by what is being tested not provided for elsewhere
Provided is an electronic device housing engaging apparatus with which the amount of protrusion from a mount surface can be suppressed, a locked state and a released state can be easily visually recognized, and damage during a lock operation or a release operation can be prevented. The electronic device housing engaging apparatus of the present invention is provided with: a housing for housing an electronic device, the housing including an opening portion at least on one side; a lid member which at least partially covers the opening portion of the housing; and at least one lever member fitted to the housing or the lid member in a pivotable manner for locking and releasing the housing and the lid member, wherein the lever member is provided with: a protruding portion which protrudes with respect to the lid member at least in the released state; an axis portion rotatably fitted to the housing or the lid member; a latch portion which is fitted to the protruding portion at an angle and which is formed so as to latch the housing or the lid member; and a push-out portion which is disposed on the opposite side of the protruding portion to the axis portion, and which is formed so as to push out the lid member using a force that acts on the protruding portion.
In a temperature control device (1), when ramp control is performed, a temperature control unit (3) calculates a correction target value such that the influence of a steady-state velocity deviation is eliminated. Further, in accordance with the calculated correction target value, the temperature control unit (3) performs normal PID operation configured by a single integrator, whereby it is possible to calculate a manipulated variable for correction such that the influence of the steady-state velocity deviation is eliminated. The temperature control device (1) is configured as described above, so it is possible to eliminate the influence of the steady-state velocity deviation through the PID operation by a single integrator that is generally used, and control the temperature of an object for temperature control so as to enhance target temperature tracking without increasing cost.
The present invention is provided with: an elapsed time measurement unit 6 that monitors the temperature T of a control target 1, performs processing to detect the time at which the temperature T of the control target 1 passes a set temperature Tref, and measures an elapsed time tela from the previous passage time until the current passage time; and a remaining time calculation unit 7 that uses the elapsed time tela measured by the elapsed time measurement unit 6 to calculate a remaining time trest until auto-tuning ends. A remaining time display unit 8 displays, on a 7 segment display unit, the remaining time trest calculated by the remaining time calculation unit 7. Due to such a configuration, a user is able to ascertain the remaining time until auto-tuning ends.
G05B 11/36 - Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
G05B 11/42 - Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
60.
TEMPERATURE MEASURING DEVICE AND TEMPERATURE MEASURING METHOD
The present invention is provided with: a thermocouple input terminal unit 11 having a thermocouple 2 connected thereto; a temperature compensation element (temperature sensor) 12 that measures the temperature in the vicinity of the thermocouple input terminal unit 11; a measurement value calculation unit 13, which calculates a temperature on the basis of a potential difference in the thermocouple 2, and performs, with respect to thus calculated temperature, temperature compensation processing using temperature information obtained from the temperature compensation element 12; a tilt angle acquisition unit 14 that acquires a tilt angle; a correction value storage unit 16 wherein correction values corresponding to tilt angles are previously set; and an angle correction value calculation unit 15 that performs correction processing using a correction value corresponding to the acquired tilt angle obtained by means of the tilt angle acquisition unit 14. Consequently, a temperature error due to a change of the installation attitude (tilt angle) of a device can be corrected.
A support flange 37 to which a diaphragm 5 having an engaging part is attached is fixed to the distal end of an attachment cylinder 35. A connecting pipe 3 is inserted into the attachment cylinder 35, and linked and fixed to the support flange 37. A push rod 7 having engaging parts at both ends thereof is inserted into the support flange 37 and the connecting pipe 3 and caused to come in contact with a push rod engaging part 7c and a diaphragm engaging part 5d. A distortion-inducing element 13 is fixed to a pedestal 15, and the pedestal 15 is fixed to the connecting pipe 3 on the reverse side from the diaphragm 5 side, and is meanwhile brought into contact with a strain-inducing element engaging part 13e via the push rod engaging part 7c. Pressure received by the diaphragm 5 is thereby transmitted to the strain-inducing element 13 with good precision.
G01L 9/04 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elementsTransmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers of resistance strain gauges
G01L 19/06 - Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
62.
SENSOR SIGNAL CONVERTER AND SENSOR SIGNAL CONVERTING METHOD
This sensor signal converter performs correction of a signal input from a sensor, and enables high responsiveness and simplification or cost reduction of a circuit configuration for correction process by including: an analog signal line 111 which outputs, to an output terminal 114, an analog signal based on a signal input from a sensor 115; an A/D converting unit 121 which performs A/D conversion on an analog signal obtained from the analog signal line 111; a digital correction circuit 12 which performs a correction value calculating process on the basis of a digital signal obtained by the A/D converting unit 121; a D/A converting unit 122 which performs D/A conversion on the correction value calculated by the digital correction circuit 12; and a correction value analog signal line 122 which adds, to the analog signal, a correction value analog signal obtained by the D/A converting unit 122.
G01D 3/02 - Measuring arrangements with provision for the special purposes referred to in the subgroups of this group with provision for altering or correcting the transfer function
G01D 3/028 - Measuring arrangements with provision for the special purposes referred to in the subgroups of this group mitigating undesired influences, e.g. temperature, pressure
63.
AUTOMATIC LUMINANCE ADJUSTMENT CIRCUIT FOR DIGITAL DISPLAY DEVICE
The purpose of the present invention is to obtain an automatic luminance adjustment circuit for a display device that allows the luminance among a plurality of display units to be equalized. Provided is an automatic luminance adjustment circuit for a display device, comprising an FET (24) that sequentially selects a display unit to be illuminated from among three display units (11, 12, 13) in accordance with a control signal Drv output from a controller (30) and connects, from among segment LEDs (11a - 11h, 12a - 12h, 13a - 13h) constituting the selected display unit, a segment LED to which a power supply voltage Vdd is applied by a transistor (22) to ground (25) so that a forward current flows through the segment LED. The controller calculates a lighting period (TD1, TD2, TD3), for each display unit, during which a forward current is made to flow through the segment LEDs constituting the display unit in order to adjust the luminance in the display unit within a prescribed range. For each display unit, the controller controls the connection to ground via the FET so that the forward current flows through the segment LEDs constituting the display unit during the calculated lighting period.
G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
G09G 3/32 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
64.
MAGNET ATTRACTION-TYPE TEMPERATURE SENSOR AND METHOD FOR MANUFACTURING SAME
A temperature sensor that is attracted by magnetic force to a measurement object, comprising a plate-shaped contact member 14, a thermocouple cable 13 of which the thermocouple portion is connected to the inner surface side of the plate-shaped contact member 14, a lower-side main body case 11B that holds the plate-shaped contact member 14 in such a manner that the bottom face part of the plate-shaped contact member 14 is exposed, a magnet 12, and an upper-side main body case 11A that is fitted to the lower-side main body case 11B and that holds the magnet 12 in the interior with the lower-side main body case 11B. Thus, it is possible to achieve a reduction in the number of parts and a simplification of assembly work.
In an AC power regulator for variably outputting power supplied from an input AC power supply with respect to a load, when an inputted output set value is equal to or more than a predetermined operation switch threshold value, on the basis of the output set value, desired power is outputted to the load by a first control method, and when the output set value is less than the predetermined operation switch threshold value, on the basis of the operation switch threshold value, a control signal generated by the first control method is turned on/off in a cycle unit of the input AC power supply, and the desired power is outputted to the load. As a result, with respect to such a load that an applied voltage is preferably not lower than a predetermined effective value (or applied power is preferably not lower than a predetermined value) such as a halogen lamp heater, an effective value of an output voltage is prevented from being lower than a predetermined value (or output power is prevented from being lower than a predetermined value).
G05F 1/45 - Regulating voltage or current wherein the variable is actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
Provided is a temperature control system capable of suppressing unnecessary power consumption and overheating of one or a plurality of subjects the temperature of which is to be controlled by having the temperature of the subjects accurately reach a target temperature in a specified time. On the basis of an input time, a target temperature, the maximum output value of a temperature adjustment unit (3), a temperature increase time, i.e., a time needed for a subject the temperature of which is to be controlled (4) to reach the target temperature, and a stabilized-time load factor, i.e., a load factor at the time when the subject to be controlled (4) is in a stabilized state after temperature increase completion, an output limiter calculation unit (2) calculates: an output limiter value, which is the ratio between the quantity of heat to be applied for the purpose of having the temperature of the subject (4) reach the target temperature in the input time, and the maximum output value of the temperature adjustment unit (3). The temperature adjustment unit (3) sets the product of the output limiter value and the maximum operation quantity as the upper limit value of the output, and controls the subject the temperature of which is to be controlled (4) to be at the target temperature.
Provided is a device mounting structure wherewith whether or not a device is locked onto a DIN rail can be assessed readily, and the efforts in the parallel installation process of the device onto to the DIN rail are reduced, thereby allowing the locking process for the device to be performed definitely during the parallel installation process. In the present invention, the mounting structure for mounting the device onto the DIN rail has a mounting surface portion for mounting the device onto the DIN rail. The mounting surface portion has a DIN-rail-accepting groove capable of accepting the DIN rail, a nail member provided on the upper edge of the DIN-rail-accepting groove and gripping the upper side flange of the DIN rail, a locking member configured to be capable of locking the lower side flange of the DIN rail, and a locking-member-accepting groove formed below the DIN-rail-accepting groove along an oblique direction and accepting the locking member. The locking member comprises a tab portion formed so as to be able to protrude from one side surface of the mounting surface portion, and is configured in such a manner as to be movable in the locking-member-accepting groove along the oblique direction under the DIN-rail-accepting groove, between a locking position, in which the locking member advances toward the lower edge of the DIN-rail-accepting groove to lock the lower side flange, and an unlocked position, in which the locking member is separated from the lower edge of the DIN-rail-accepting groove.
Provided is a device mounting structure allowing a device such as a control apparatus to be mounted in different orientations onto a DIN rail using a common locking member. In the present invention, the mounting structure for mounting the device onto the DIN rail has a mounting surface portion for mounting the device onto the DIN rail, two grooves being provided on the mounting surface portion. The two grooves extend in different axial line directions from each other, and are formed to be capable of accommodating the DIN rail. The mounting surface portion has a locking member configured to be retractable, relative to an angle portion of an intersecting region between the two grooves, toward the intersecting region. Each of the two grooves has a nail member for gripping a flange of the DIN rail on the edge opposite to the edge where the locking member retracts.
A temperature control device is provided with a setting value adjusting unit (12) which, for each control timing at which temperature control is implemented by a controller (1), multiplies together a derivative value ΔSV indicating the gradient of a temperature setting value SV, the setting of which is received using a target temperature setting unit (11), an integral time TIn of a PID calculation used by a two degree of freedom PID calculating unit (14) to calculate a manipulated variable MVn, and 1 minus a two degree of freedom factor a (1-a), and calculates an adjusted temperature setting value SV'n by adding the result of the multiplication (ΔSVn × TIn × (1-a)) to a temperature setting value SVn, the setting of which is received using the target temperature setting unit (11). By this means, the occurrence of a delay in the control temperature of a control target (17), relative to the temperature setting value SVn, can be suppressed even if the temperature setting value SVn of the control target (17) varies in the shape of a ramp.
The invention is provided with: a manipulated variable integrated value storage unit (40) which, when temperature control means (101 to 10N) effect control by means of adjusted temperature setting values (SV1' to SVN') used to synchronize the times at which the temperatures of temperature controlled zones (11 to 1N) reach a target temperature, without setting output limiter values (L1 to LN), integrates manipulated variables (MV1 to MVN) from the time at which temperature control starts to the time at which the target temperature is reached, and stores the integrated values (∫MV1dt to ∫MVNdt) of the manipulated variables (MV1 to MVN); and an output limiter value calculating unit (50) which identifies the temperature controlled zone (11) having the greatest integrated value, from among the temperature controlled zones (11 to 1N), divides the integrated values (∫MV1dt to ∫MVNdt) of the manipulated variables (MV1 to MVN) in the temperature controlled zones (11 to 1N) for which a limiter value is to be set, by the integrated value (∫MV1dt) that is the greatest integrated value, and calculates the output limiter values (L1 to LN) of the manipulated variables (MV1 to MVN) in the temperature controlled zones (11 to 1N) from the results of the division of the integrated values.
Provided is an alternating-current power regulator that operates with a simple circuit configuration and in which the number of control signal lines for switching circuits provided to the alternating-current power regulator and of drive circuits and isolation signal transmission circuits provided thereto is reduced. This alternating-current power regulator comprises: a switching circuit Q1 that generates a comb waveform by switching the positive component of an input alternating-current power supply 2; a switching circuit Q2 that generates a comb waveform by switching the negative component of the input alternating-current power supply 2; and a control signal generation circuit 131 that generates a signal for controlling the operation of the switching circuits Q1, Q2. Thereby, the alternating-current power regulator variably outputs power supplied from the input alternating-current power supply 2 to a load 3. The switching circuits Q1, Q2 and the control signal generation circuit are connected by a common signal line 139 that inputs a common control signal to the switching circuit Q1 and the switching circuit Q2.
H02M 5/293 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC 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
72.
ALTERNATING-CURRENT POWER REGULATOR AND METHOD FOR CONTROLLING ALTERNATING-CURRENT POWER REGULATOR
Provided is an alternating-current power regulator that is provided with a protection circuit (snubber circuit) for protecting a switching element from a spike voltage, and that is capable of suppressing the occurrence of an unexpected voltage in a load at the time of startup etc. This alternating-current power regulator comprises: a switching circuit 140 that generates a comb waveform by switching an input alternating-current power supply 2; a microcomputer 132 that generates a signal for controlling the operation of the switching circuit 140; a smoothing circuit 170 provided between the switching circuit 140 and a load 3; and protection circuits 151, 152 that protect the switching circuit 140 from a spike voltage. Thereby, the alternating-current power regulator variably outputs power supplied from the input alternating-current power supply 2 to the load 3. The alternating-current power regulator is provided with a normally on switch circuit RL1 connected in parallel to the load 3.
H02M 5/293 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC 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 surface temperature sensor calibration device is provided with an acceptance determination standard setting unit 14 for using the temperature difference variation over time indicated by thermal analysis results stored by a thermal analysis result storage unit 12, the temperature measured by a standard temperature sensor 7, and the measurement accuracies of a temperature sensor to be calibrated 20 and the standard temperature sensor 7 to set an acceptance determination standard indicating the allowable variation range for the measurement temperature of the temperature sensor to be calibrated 20. An acceptance determination unit 15 determines whether the temperature measured by the temperature sensor to be calibrated 20 is within the allowable variation range indicated by the acceptance determination standard set by the acceptance determination standard setting unit 14, determines that the calibration result for the temperature sensor to be calibrated 20 is acceptable if the temperature measured by the temperature sensor to be calibrated 20 is within the allowable variation range, and determines that the calibration result for the temperature sensor to be calibrated 20 is unacceptable if the temperature measured by the temperature sensor to be calibrated 20 is outside of the allowable variation range.
A control device (10), provided with: a PID calculation unit (11) for calculating, with respect to a subject to be controlled (20), a proportional output that is proportional to the deviation between the control amount for the subject to be controlled (20) and a target value determined in advance, an integrated output proportional to the integral value of the deviation, and a differential output proportional to the differential value of the deviation, and outputting a first operation amount obtained by synthesizing the proportional output, the integral output, and the differential output; a disturbance characteristic determination unit (14) for determining whether or not to correct the first operation amount according to characteristics of a disturbance applied to the subject to be controlled (20); a corrective amount calculation unit (15) for calculating the amount of correction to the first operation amount on the basis of the proportional output, the integral output, and the differential output from the PID computation unit (11), according to the characteristics of the disturbance applied to the subject to be controlled (20); and a corrective amount addition unit (16) for correcting the first operation amount from the PID calculation unit (11) by the amount of correction from the corrective amount calculation unit (15) to obtain a second operation amount, and outputting the second operation amount to the subject to be controlled (20).
G05B 11/42 - Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
75.
TEMPERATURE CONTROL DEVICE AND TEMPERATURE CONTROL METHOD
The present invention is provided with an initial difference ratio storage unit (25), which acquires a difference initial value (emaster-0) (a difference initial value (emaster-0) between a temperature setting value (SVmaster) that is calculated by means of a difference calculation unit (13) of a master CH, and a temperature measurement value (PVmaster-0) at the start of a temperature control), and a difference initial value (eslave-m-0) (a difference initial value (eslave-m-0) between a temperature setting value (SVslave-m-0) and a temperature measurement value (PVslave-m-0) at the start of the temperature control) that is calculated by means of a difference calculation unit (24) of a slave CHm, and which calculates a ratio (αm) of the difference initial value (eslave-m-0) with respect to the difference initial value (emaster-0). A setting correction value calculation unit (26) calculates, using the ratio (αm) calculated by means of the initial difference ratio storage unit (25), a corrected temperature setting value (SV'slave-m-n) of the slave CHm, said temperature setting value being to be used at nth control timing by means of a slave controller (20) of the slave CHm.
A display control device is provided with: a display item history update unit (16) that updates a display item history indicating a display item to be displayed that has been updated by an operation control unit (15) each time a switching operation is received by a key operation reception processing unit (14); and a proficiency evaluation unit (17) that evaluates a switching operation proficiency of an operator on the basis of an update order of the display item indicated by the display item history updated by the display item history update unit (16), wherein a no-operation time update unit (18) updates a no-operation time (TNop) in accordance with the proficiency evaluated by the proficiency evaluation unit (17) and sets the no-operation time (TNop) after the update in a no-operation timer (19).
09 - Scientific and electric apparatus and instruments
Goods & Services
Automatic vending machines. Scientific, electronically operated nautical, surveying, electric, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), teaching apparatus and instruments; Apparatus for recording, transmission or reproduction of sound or images; Magnetic data carriers, recording discs; Mechanisms for coin-operated apparatus; Cash registers, calculating machines, data processing apparatus and computers; Fire-extinguishing apparatus; Electronic temperature regulators, and parts and components therefor; Electronic apparatus for process monitoring; Electronic control apparatus; Analogue and digital control apparatus; Compact discs, DVDs and other digital recording media.
Signal components other than an AC signal are removed by configuring an AC signal measurement device so as to be provided with: a zero-point detecting means (11) which detects the zero point of an AC signal; a pulse oscillating means (13) which oscillates a pulse at a frequency proportional to the signal value of an AC signal; a pulse counting means (15) which counts the number of pulses oscillated by the pulse oscillating means (13) during a half-cycle of the AC signal; a pulse count storing means (16) which stores the pulse count counted by the pulse counting means; and a digital value calculating means which calculates the average value of the pulse count in the most recent half-cycle of an AC signal counted by the pulse counting means (15), and the pulse count in one half-cycle previous to the most recent half-cycle stored in the pulse count storing means (16), and calculates the absolute value of the difference between the average value and the pulse count of the most recent half-cycle, as a digital value which is proportional to the signal value of an AC signal.
G01R 19/255 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques using analogue/digital converters of the type with counting of pulses during a period of time proportional to voltage or current, delivered by a pulse generator with fixed frequency
H02J 3/14 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
The present invention is provided with: target-power-value calculation units (6-m) which calculate target power values (Xmn) for loads (1-m) by multiplying, with reference power values (qm) stored by a reference-power-value storage unit (4), output target values (Amn) inputted by an output-target-value input unit (3); and target-power-value correction units (7-m) which correct the target power values (Xmn) for the loads (1-m) by multiplying, with correction coefficients (hm) stored by correction-coefficient storage units (5-m), the target power values (Xmn) for the loads (1-m), said target power values having been calculated by the target-power-value calculation units (6-m).
G05F 1/45 - Regulating voltage or current wherein the variable is actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
In this invention, an inference cycle for fuzzy inference is adjusted so as to reduce unnecessary inference while still obtaining adequate fuzzy-inference results. This fuzzy control device is provided with: a fuzzy inference unit (9) that performs fuzzy inference at intervals of the aforementioned inference cycle; a control-computation unit (5) that determines, in accordance with inference results from the fuzzy inference unit (9), an operation quantity (MV) to output to a control subject (3); a rate measurement unit (7) that determines the rate of change (edot) of the deviation of a measured value (PV) from the control subject (3) with respect to a target value (SV); and an inference-cycle calculation unit (17) that calculates the inference cycle in accordance with the rate of change (edot) of said deviation. The inference cycle, which can be varied while the control subject is being controlled, is appropriately changed such that, for example, the amount of change of said deviation is constant.
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
This invention prevents overshoot of a measured value (PV) while keeping response fast. A control-computation unit (5) determines an operation quantity (NV) in accordance with an adjusted gain. On the basis of a deviation and the rate of change of said deviation, a fuzzy inference unit (feedback-gain calculation unit) (9) determines a feedback gain for adjusting the aforementioned gain. A feedback-gain correction unit (19) determines the acceleration of the deviation, i.e. the rate at which the rate of change of the deviation changes relative to the deviation itself, and a first prediction value indicating the rate of change that it is predicted that the deviation will exhibit upon reaching zero. The feedback-gain correction unit (19) also determines the change in the acceleration of the deviation, i.e. the rate at which the acceleration of the deviation changes relative to the deviation itself, and a prediction value indicating the acceleration that it is predicted that the deviation will exhibit upon reaching zero. From the deviation, the first prediction value for the rate of change of the deviation, and the prediction value for the acceleration of the deviation, the feedback-gain correction unit (19) determines a second prediction value indicating the rate of change that it is predicted that the deviation will exhibit upon reaching zero, and if said second prediction value satisfies a prescribed condition, the determined feedback gain is corrected and outputted to the control-computation unit (5).
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
A power controller is provided with a trigger angle determination unit (19), which determines a preliminarily-set standby trigger angle (φe) as a provisional control trigger angle (φˆn), and outputs the trigger angle (φˆn), when an output current monitoring unit (17) recognizes the abnormality of an output current. The trigger angle determination unit (19) determines a target trigger angle (Φn) calculated by an output-target trigger angle convertor (13) as a provisional control trigger angle (φˆn), and outputs the trigger angle (φˆn), when the output current monitoring unit (17) does not recognize the abnormality of the output current. A trigger-angle increment regulator (20) determines a control trigger angle (φn), for which a rapid increase in trigger angle has been prevented, on the basis of the provisional control trigger angle (φˆn) output from the trigger angle determination unit (19), and outputs the trigger angle (φn) to a thyristor control unit (21).
H02H 7/04 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
In order to prevent loss of controllability when the total target power value changes, and to suppress flicker in the power source voltage, an upper limit value calculation unit (20) is provided for calculating the power upper limit PLIM for an entire load by adding correction values Hn calculated by a correction value calculation unit (19) to the sum Σxn of target power values x1n-xMn calculated by a total target power value calculation unit (18), whereby an appropriate power upper limit value PLIM can be obtained in accordance with fluctuations in the sum Σxn of target power values x1n-xMn.
G05F 1/45 - Regulating voltage or current wherein the variable is actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
The purpose of the invention is to make it possible to minimize fluctuations in the power supplied to a load even when there are fluctuations in the power source voltage, load fluctuations, or the like. There exist power supply conditions in which an intermediate total power value for a load (1-m) calculated by an intermediate total power value calculation unit (25) with respect to each respective load (1-m) is greater than a predetermined threshold, and the following sum is not higher than a power upper limit value (sJ): the sum of the estimated power value (qmontilde) of the load (1-m) estimated by an ON-power estimation unit (17) and the estimated power value (q1ontilde-qMontilde) of loads (1-1 to 1-M) estimated by the ON-power estimation unit (17) and determined to be switched ON in the next control cycle. If these power supply conditions are satisfied, the power supply ON/OFF apparatus (15-m) of the load (1-m) is controlled to be in an enabled state, and if the power supply conditions are not satisfied, the power supply ON/OFF apparatus (15-m) of the load (1-m) is controlled to be in a disabled state.
G05F 1/45 - Regulating voltage or current wherein the variable is actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
[Problem] To provide an alternating current power regulator which, by being made to have a current-limit function, prevents the flow of inrush current to a lamp heater and has a superior power factor without corrupting control. [Solution] The temperature of a heater (8) is controlled on the basis of time-sharing control and a predicted heater resistance value for completion time of the present cycle is calculated by way of a predetermined formula. A predicted current is calculated on the basis of the calculated predicted heater resistance. By comparing the predicted current with a current limit value, the applied voltage to the heater (8) is regulated in order to output an on/off signal to a thyristor (6).
G05F 1/45 - Regulating voltage or current wherein the variable is actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
Disclosed is a multichannel power controller which makes it possible to reduce the power capacity of power source equipment to the required minimum. The power controller (3) presets the rated power value of the load for each of a plurality of channels (ch1 to ch5), and presets the total-power upper limit value constituting the upper limit value of the sum of the output power of all of the channels at each unit time (minimum time for turning the output ON or OFF). Then, at each unit time, the power controller calculates the target output value of each channel and, after completion of integration processing of all of the channels, performs the following processing in sequence starting from the channel having the largest integration value. [Processing] If the integration value does not exceed a threshold value, the output of the channel in question is turned OFF during the unit time. If the integration value exceeds the threshold value and if a value, which is obtained by adding the rated power aggregate value of a rated power aggregator that aggregates the rated power values of the load of the channels the output of which has been turned ON and the rated power value of the load of these channels, is equal to or below the total-power upper limit value, processing is performed for adding the rated power values of these channels to the rated power aggregator, processing is performed for turning these channels ON for output during the unit time, and processing is performed for subtracting 1% or 100% from the target output value integrator of these channels. If the integration value exceeds the threshold value and the value obtained by adding the rated power aggregate value and the rated power values of these channels is equal to or greater than the total-power upper limit value, the output of the channels in question is turned OFF during the unit time.
H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
G05D 23/19 - Control of temperature characterised by the use of electric means
H02J 13/00 - Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the networkCircuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
