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JP2022086120A |
To provide a brake control circuit that can eliminate a time lag from the start of power supply to the start of voltage application to a coil of a non-excitation actuated electromagnetic brake even though it is possible to reduce the pow...
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JP7061532B2 |
To provide an electric brake device which can improve accuracy for correcting thrust estimation.A brake mechanism 22 transmits thrust generated by driving an electric motor 22B to a piston 22E for moving a brake pad 22F. An ECU 24 for a ...
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JP2022523822A |
In the present specification, control circuits of electric motors, printing devices and methods of overvoltage protection for electric motors are disclosed. The control circuit of the electric motor includes a controller, a voltage conve...
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JP2022061656A |
To provide a motor drive device and a fan device, enabling improvement of utilization efficiency of regenerative energy obtained from motors.A motor drive device 40 comprises: a power source terminal 41; a ground terminal 42; a smoothing...
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JP7046751B2 |
To solve such a problem that, in a stopping still vehicle, noise is generated as a phase of a phase current to be supplied to an electric motor for braking rotation of wheels of the vehicle is periodically shifted.A control circuit CNT, ...
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JP2022051690A |
To provide a method for protecting an electric propulsion system in response to occurrence of a fault.The method includes the step of activating short circuits in power switches of inverters (14a and 14b) in a motor controller (50) to re...
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JP7046157B2 |
In a motor driving apparatus including an inverter connectable to n motors (n being an integer not less than 2) each including a rotor having a permanent magnet, braking operation is performed on i (i being an integer from 1 to n−1) of...
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JP2022047511A |
To provide a driving system controlling braking.A system 100 includes circuit legs 126 with resistivity connected to a converter 106 for converting current for a motor 108 to which power is supplied and to a current source 124 that suppl...
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JP7041582B2 |
To provide a short brake circuit in which brake torque can be effectively generated even in a high-speed rotation time.A short brake circuit for an AC power generator includes a short current path which is connected between power transmi...
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JP2022043913A |
To stop reels with high accuracy in a game machine using a three-phase DC motor.A game machine (60) comprises: reels (64); a three-phase DC motor (50) that rotates the reels (64); and a motor control unit (1). The motor control unit (1) ...
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JP7036050B2 |
A shift range control device switches a shift range by controlling a drive of a motor in which a rotor rotates by energizing a motor winding. An angle calculation unit calculates a motor angle based on a signal from a rotation angle sens...
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JP7031338B2 |
To provide an electric brake device which has high serviceability.In the electric brake device which presses a friction member on a rotor rotating along with a wheel by force of an electric motor, it controls pressing force with feedback...
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JP7030324B2 |
To provide a transmission system capable of suppressing adverse influence such as overcurrent in an electric motor by properly adjusting a degree of transmission of driving force through a belt between the electric motor and an operation...
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JP7028676B2 |
A motor driving control apparatus according to an embodiment includes an interphase short-circuiting unit that is connected to at least two-phase coils of the three-phase coils, and that short-circuits at least a pair of coils among thre...
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JP7025856B2 |
To provide an electric actuator with a regenerative brake circuit and an electric rotary valve for an emergency shutdown valve, which forms a regenerative brake circuit of a DC motor in an early stage to minimize over-run and prevent the...
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JP7021220B2 |
The preset invention relates to a gate with a crash-down prevention mechanism, comprising a gate panel which can be opened and closed by the rotation of a gate panel drive, a motor which is coupled to the gate panel drive, and a braking ...
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JP2022024576A |
To provide a linear-motion actuator which eliminates the need of speed reduction control of a shaft and can be operated fast even in a case where a moving distance is short, and a control method therefor.A representative configuration of...
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JP6991665B2 |
To provide a cover opening and closing device of a work vehicle capable of reliably performing rising actuation of a cover while suppressing a load of a motor or the like at a cover stop position.A canopy opening and closing device inclu...
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JP7015270B2 |
A protection device provided between a synchronous motor having a plurality of windings and a motor driving device for driving the synchronous motor includes: a switching unit for making and breaking the connection between the motor driv...
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JP7014140B2 |
An electromagnetic brake controller for controlling a negative-actuated electromagnetic brake includes an output terminal connectable to the electromagnetic brake and a brake control section that outputs, through the output terminal, a b...
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JP7014638B2 |
There is provided a variable speed increaser including a planetary gear transmission device which changes the speed of a rotational driving force of the electric driving device and transmits the changed rotation driving force to a drivin...
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JP7006642B2 |
To provide a passenger conveyor in which stop of footsteps can be stably controlled in the event of blackout.A DC power supply device 200 of an escalator 1 includes: a full-wave rectifier 210 which performs the full-wave rectification on...
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JP7005971B2 |
To provide a control device for a vehicle opening/closing body capable of suppressing a change in a rotation frequency of a motor.In the case where a movable panel 14 is at the fully open position, when an instruction to displace the mov...
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JP7005377B2 |
To achieve adaptive control of a servo motor while suppressing generation of a cost increase.An auto air-conditioner ECU 30 executes drive control intended for a servo motor 21 for blowout mode door drive installed on an automatic air-co...
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JP2022015590A |
To realize a motor drive device that is easily constructed and inexpensive with fewer wires related to a brake device.A motor drive device 1 comprises an inverter 11 that converts an input DC voltage into an AC voltage and outputs the AC...
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JP7002522B2 |
To provide a motor driving device in which, during a motor braking operation, a load on a brake circuit is lessened so that heat generation in a motor can be inhibited.A capacitor 11 that is connected in parallel with a DC power source a...
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JP6984307B2 |
A long-life motor driving device is realized. A motor driving device (11) includes: a motor driving circuit (3) configured to supply an alternating electric current to a motor (2); and a dynamic braking circuit (4). The dynamic braking c...
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JP2021191110A |
To reduce a time until the motor rotation stops when kickback occurs, and reduce the reaction to a user caused by a decrease in the motor rotation speed when the user stops operating an operation unit.An electric work machine includes a ...
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JP2021191105A |
To promptly perform DC braking in conjunction with the power interruption without using an external power supply in an induction motor.An induction motor includes rectifying means that rectifies an alternating current into a direct curre...
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JP2021186928A |
To provide a robot which can operate a dynamic brake circuit even when a robot main body part and a robot controller are electrically disconnected.A robot includes a robot main body part 100a having a joint 21, a motor 22 arranged on the...
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JP6978419B2 |
A motor drive circuit includes an upper switch, a lower switch connected in series with the upper switch and drives a brushless DC motor, a gate drive circuit that drives the lower switch and a brake circuit that uses an inductive voltag...
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JP6967750B2 |
To effectively suppress both the rapid deceleration of a motor and the overvoltage of a power line connecting a DC power supply and an inverter.A control unit 30 performs abnormality determination on at least one of a DC power supply 2, ...
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JP6958583B2 |
To provide a passenger conveyor capable of stopping steps gently at an appropriate distance when a power failure or a failure of an inverter occurs during driving of the steps.An escalator includes endlessly-connected steps, a motor for ...
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JP2021170880A |
To provide a rotary electric machine in which deterioration of the maintainability is prevented, and noise or vibration is suppressed.A rotary electric machine includes: a main body having a first rotation shaft; a brake mechanism mounte...
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JP6953069B2 |
To save energy in a magneto-rheological fluid device which is provided to brake the rotation of a passive body rotating with external force, and to freely control the rotational operation of the passive body without depending on the exte...
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JP6954363B2 |
When contactors (9) are in an open state and a rotating electrical machine (80) is in a rotating state, an inverter (10) is controlled to appropriately stop operation of the inverter (10). An inverter control device (20) that controls th...
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JP6955196B2 |
To suppress movement of a mobile body operated by an electric motor in a direction opposite to an intended direction so as not to cause unnecessary confusion to a user.A motor control device 100 comprises a motor driving circuit 50 conne...
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JP6952211B1 |
To provide an emergency stop device capable of preventing a coil of a motor from burning when the motor is emergency stopped by dynamic braking. When the electric power supplied to the motor M is cut off during the operation of the motor...
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JP2021164377A |
To provide a controller for a motor, the controller inhibiting the motor from rotating reversely while shortening a time required for stopping the motor.A controller for a motor uses a position θ to convert a d-axis voltage command valu...
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JP6939715B2 |
To reduce quantity of a regenerative resistor consuming regenerative electric power by converting to heat by efficiently using regenerative power generated when a dynamo-electric motor is decelerated in a vessel provided with the dynamo-...
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JP6934394B2 |
To provide a drive circuit capable of applying a short brake properly.A first detection circuit 410 generates a position command value P_TGT indicating the target position of a rotor and a speed command value V_TGT indicating the target ...
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JP6932658B2 |
To provide a lid opening/closing device of a work vehicle, capable of preventing a lid from moving by inertia when stopping the movement of the lid during opening/losing operation.A canopy opening/closing device comprises a control box 2...
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JP6933523B2 |
To ensure return motion in power failure.An electric actuator 100 includes a driving portion 16 for driving a valve 200 according to a control signal, a power storage portion 2 for storing electric energy, a charging portion 3 for chargi...
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JP6933517B2 |
Provided is a motor controller including: a rotation control unit configured to control a rotation of a motor; a brake control unit configured to control an operation of a brake for holding a rotor with respect to a stator of the motor; ...
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JP2021126327A |
To provide a washing machine capable of decelerating a washing tub in a short time without generating unnecessary noise.A washing machine W of this invention comprises an outer tub 37, a washing tub 35 provided in the outer tub 37, a mot...
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JP6929009B2 |
Embodiments of the present disclosure relate to the technical field of electronic devices, and a method for generating a motor brake signal is disclosed. In the present disclosure, the method for generating a motor brake signal includes ...
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JP6922486B2 |
To provide a control device for a robot that, in a case where the robot collides with a worker, is able to decelerate the robot speedily and prevent the robot from colliding with the worker again.A control device 70 that controls a robot...
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JP6921374B2 |
To provide a vacuum valve capable of preventing a voltage rise in a DC power supply line during a deceleration operation.A vacuum valve comprises: a valve; a motor 31 for driving a valve plate; switching circuits 451A and 451B that turn ...
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JP2021114851A |
To provide a motor driver, a motor driver control circuit, and a motor driver control method capable of simplifying a configuration.A motor driver 10 includes: an inverter circuit 20 which converts DC power from a DC power supply 11 into...
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JP6915788B2 |
In order to generate a braking torque without passing a regenerative current to a power source, this motor driving control apparatus has (A) an inverter unit configured to drive a motor; (B) a separation switch configured to separate a p...
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