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JP3246096U |
The present disclosure provides an inverter circuit (10) for an electric AC motor (32) comprising a primary energy storage device (10), a plurality of switching stages (14), a drive control circuit (16), and an emergency control circuit ...
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JP7445486B2 |
To provide a drive circuit capable of reducing power consumption while shortening an open time of a brake.A full-bridge circuit 110 is connected to an exciting coil L1 of an electromagnetic brake. A current detection circuit 120 detects ...
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JP7445485B2 |
To provide a drive circuit capable of reducing an inductive load current in a short time.A first transistor Tr1 and a second transistor Tr2 are placed on a diagonal of a full-bridge circuit. A first diode D1 is provided between a first o...
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JP7442039B2 |
To provide a technique capable of causing a motor to operate without delay after recovering from a power failure.A control device 130 controls a drive circuit 170 that drives a motor 120. A control unit 152 receives rotation speed inform...
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JP2024507960A |
[Problem] The present disclosure is capable of converting kinetic energy into electrical energy of the bus voltage when the bus voltage is low, realizing a braking function by converting the kinetic energy into electrical energy, and ens...
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JP7433947B2 |
A method for operating a drive train, having a main and, an auxiliary drive and a speed modulation gearbox with a fixed mechanical transmission ratio between the two drives, for starting and towing a drive train to a defined set rotation...
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JP7432369B2 |
To prevent a penetration current from generating in a control of a motor.A motor control circuit 10 comprises: a first switch 26 switching a connection and a disconnection of a positive electrode side power supply line 22; a regenerative...
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JP7432394B2 |
To provide a parking device which prevents a pallet from falling at unexpected timing.A parking device includes: an inverter for outputting a drive current when power is supplied; a motor for moving an object in the vertical direction or...
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JP7431939B2 |
In an electric parking brake device for a vehicle, a control unit (C) that controls the operation of an electric motor (41) includes: a slope computing means (87) that computes the slope of a detected current value obtained by a current ...
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JP7424772B2 |
To provide a vacuum evacuation device which can make circuit components for absorbing regenerative voltage such as brake resistance unnecessary and an operation method thereof.A vacuum evacuation device concerning one aspect of the prese...
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JP2024008105A |
An object of the present invention is to prevent an increase in the number of parts and avoid unnecessary power consumption when a limit switch is used to detect a limit position of movement of a sheet. A motor drive device (100) include...
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JP2024005861A |
An object of the present invention is to reduce the peak value of short-circuit current when an electric motor is short-circuited. [Solution] A motor drive device (100) is configured to drive an electric motor (22) by an external force d...
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JP7405195B1 |
An object of the present invention is to reduce the delay from the occurrence of a power outage to the start of deceleration control of an electric motor in a passenger conveyor. An inverter that drives an electric motor that drives step...
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JP2023181371A |
To provide a motor drive system capable of reducing the possibility of servo motor movement being unnecessarily long or short the period from when a stop command is input until the servo motor stops.A motor drive system 1 includes a serv...
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JP7399443B2 |
A bicycle braking system includes a server, a portable device such as a smartphone, a display unit, a control unit, a power supply unit, a rotating electrical machine, and a bicycle. The portable device includes an image display unit, a ...
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JP7398947B2 |
To obtain a motor controller that can decelerate and stop along the trajectory of normal operation when an abnormality occurs.A motor controller includes a buffer that temporarily stores N position commands from a first position command ...
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JP7398879B2 |
A motor control apparatus configured to control a motor, includes: a drive circuit of the motor including a semiconductor device and being installed on a different substrate from a substrate of the motor; a load switching unit configured...
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JP7399125B2 |
To provide an electromagnetic brake operation compensation device capable of detecting a state of an electromagnetic brake device in real-time and making it possible to continue the operation of a facility in a more appropriate state.An ...
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JP7397606B2 |
An electric working machine may include a brushless motor and a motor controller. The motor controller may include three upper switching elements, three lower switching elements, and a control unit. The control unit may be configured to ...
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JP2023173374A |
To provide a brake control device for an elevator, capable of reducing a contact delay until a contact point of a contactor becomes a release state.A brake control device for an elevator includes: a contact point S; and a contactor coil ...
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JP7391014B2 |
Systems and methods are provided for braking a translator of a linear multiphase electromagnetic machine. The system detects a fault event. A polarity indicative of an electromotive force in determined in at least one phase of the linear...
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JP2023550388A |
The present invention relates to a resistance braking method applied to a BLDC motor (10) used in a hermetic compressor. This resistive braking method is achieved by selecting, at a certain electrical position of the BLDC motor (10), the...
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JP7389272B2 |
With the aim of improving the reliability of a power conversion device for driving a motor, this power conversion device is provided with a rectifying portion for rectifying an AC voltage and outputting a DC voltage, a smoothing capacito...
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JP7385618B2 |
A control device configured to control operation of an electric motor of which a rotational shaft is rotatable by an external force, is provided, which servo-controls the electric motor by an inverter circuit when a voltage value between...
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JP7381322B2 |
A robot (100) includes a resistance circuit (60) configured or programmed to perform a control to reduce a braking force of a dynamic brake by changing a resistance value of a resistance component (63) with respect to a power supply path...
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JP7375395B2 |
To provide an electric valve device capable of improving mountability while ensuring the position holding performance of a valve body.A valve device 10 comprises an electric motor 42, a speed reducing mechanism 43, a valve body 24, a pow...
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JP7367498B2 |
To provide a vacuum pump that can prevent overvoltage of an inverter voltage during braking operation.A vacuum pump 1 includes a pump rotor 10, a motor 13 that rotates and drives the pump rotor 10, a motor control unit 221 that controls ...
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JP7364919B2 |
A brake circuit discharge system is disclosed that includes: a motor drive circuit configured to drive a motor; a brake drive circuit configured to drive a brake B to decelerate and stop the driving of the motor and to apply the brake wh...
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JP7364391B2 |
To provide a motor drive device capable of performing various fault diagnoses.A motor drive device 10 comprises: a control unit 60 that sets, during fault diagnosis, at least one of a plurality of lower arm side switching elements B, D a...
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JP2023151149A |
To efficiently prevent reverse rotation of a rotor.A control unit estimates execution time Tx of brake control required for fixing a position of a rotor at a specific angle on the basis of differential pressure between delivery pressure ...
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JP2023136220A |
To provide an electric compressor capable of improving quietness after stop command input.An electric compressor includes a control section MC which controls drive of a motor M. The control section MC executes: synchronous speed reductio...
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JP2023130658A |
To allow regenerative power generated by an electric motor of an electrically-driven brake to be consumed appropriately.A brake system 20 is provided with a plurality of electrically-driven brakes 21 to 24. The plurality of electrically-...
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JP7348028B2 |
A motor drive device includes: a converter converting an AC voltage supplied from an AC power supply into a DC voltage; a smoothing capacitor smoothing the DC voltage output from the converter; an inverter converting the DC voltage smoot...
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JP2023121317A |
To provide a stop method of an electric motor capable of swiftly starting the electric motor without detecting the initial position of the rotor when starting the electric motor next time.The method includes the steps of: executing a dec...
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JP2023117870A |
To further simplify wiring for inputting a signal related to stopping an electric motor to a drive system equipped with a plurality of control units that control an electric motor.A drive system includes a plurality of control units that...
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JP2023113391A |
To reduce restrictions on a hardware design.A power conversion device includes: a plurality of semiconductor elements connected in parallel to each other; a plurality of gate drivers corresponding to the plurality of semiconductor elemen...
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JP7327251B2 |
A controller for an electric motor comprises: an estimator configured to estimate a position of a rotor by using a d-axis current, a q-axis current, a d-axis voltage command value, and a q-axis voltage command value from which a noise is...
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JP2023113453A |
To provide motor control device capable of diversifying stop operation of a motor when the motor to be a control object stops.A motor control device includes a brake timing determination part 15 for determining timing when the rotation a...
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JP2023112504A |
To provide a power source circuit and a motor device in which the energy efficiency can be improved by reuse of energy of a generated counterelectromotive force.A power source circuit for supplying DC power to a load having an inductance...
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JP2023110647A |
To provide a motor control device capable of synchronizing an actual rotational position of a rotating body with a rotational position on management before the rotational speed of the rotating body driven by a motor becomes constant.A mo...
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JP2023109007A |
To provide a motor control technique to prevent a failure in starting a motor.A motor control unit comprises: a motor; a transmission mechanism that transmits a driving force of the motor to a load of the motor; and control means that, w...
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JP7311348B2 |
To provide a servo motor controller that can quickly and effectively stop an industrial machine at a particular position even if operation speed is relatively low when a fixed position stop command is issued. The servo motor includes a s...
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JP2023100456A |
To prevent damage to an emergency power supply when a motor and a brake are driven by an emergency power supply while suppressing costs.In a driving method of a motor 40 and a brake 42 by using a commercial power supply 32 in normal time...
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JP2023090373A |
To provide a fishing reel capable of taking log storage of a reel state and data outside without using a battery in the fishing reel having a brake part imparting a brake force to a spool.A fishing reel 1 is configured to include: a spoo...
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JP2023090372A |
To provide a fishing reel capable of continuing control by a control part including log storage and communication with external equipment even when spool stops in the fishing reel having a brake part imparting a brake force to the spool....
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JP7299099B2 |
In a robot stopping method, if a shaft that moves at least a part of the robot in the gravity direction is defined as a Z shaft and a time at which the occurrence of the a power failure has been detected is set as a reference time, a fir...
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JP2023088685A |
To provide an electric vehicle control method and an electric vehicle control device which enable an electric vehicle to stop at a target stop position, set by a driver, in front of an obstacle such as a preceding vehicle, with high accu...
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JP7292673B2 |
To provide a discharge device and the like that are excellent in distributing the load of a regenerative operation.A drive unit 10 includes a power supply line L1 that supplies power to a motor 30, receives regenerative power from the mo...
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JP7288921B2 |
An electric suspension control, in a vehicle including an electric suspension apparatus driven with a motor, short-circuits the motor and limits a vehicle speed to a predetermined speed or less, in a case where an abnormality occurs in t...
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JP2023078685A |
To provide a driving device for an oil pump capable of simplifying power management for controlling a regeneration state of a motor.A first motor 21 has: a first rotor 23 having a predetermined plurality of magnetic poles 23a; a stator 2...
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