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JP4447891B2 |
When torque of a DC motor is dropped down to zero at a stop position, force is generated by deformation of a member for transmitting the torque of the DC motor. The force moves the driven body which is in the stopped state, which results...
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JP4446284B2 |
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JP2010074946A |
To provide a motor drive technique which can prevent abnormal heat generation of a motor due to soldering defects in a motor protective circuit.A soldering defect detection motor protective circuit 11 detects the presence of abnormality ...
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JP4433149B2 |
A method for controlling an inverter controlled generator set which comprises a DC power source section having as a power source a generator driven by an engine and an inverter which converts an output of said DC power source section int...
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JP2010057245A |
To provide a motor controller which is equipped with an emergency shutdown system that can variably adjust the braking force, according to the position in the stroke range of a movable body, that enables the braking force to be variably ...
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JP4427215B2 |
The system has an electric motor (23), a current sensor (42) and a controler (31) that measures at least one current parameter when the motor is supplied with current for leaving an end position, stores it as a reference parameter, conti...
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JP4424813B2 |
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JP4422489B2 |
The present invention involves a dynamic brake for use in a peristaltic (i.e., roller) pump. The dynamic brake avoids backlash, due to counter rotation. In addition, it does not preclude the option of hand operating the roller pump. This...
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JP4418259B2 |
The invention relates to a control apparatus for an electric motor and for an electro mechanical brake having a relay switch (43) for selectively connecting a power supply line of an inverter (31) to a ground line, GND, being inserted be...
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JP4415394B2 |
The device has a speed reduction device (42) placed between an electric motor (41) and a steering shaft for transmitting a torque generated by the motor to the shaft. A steering limit detecting device (44) detects whether a steering valu...
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JP4417586B2 |
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JP4411381B2 |
A motor comprises a yoke (25) as casing, a shaft (23) extending along a center of the yoke, an annular stator (27) fixed to the yoke and an armature (24) fixed to the shaft (23) to rotate with the shaft inside the stator. The armature co...
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JP2010028996A |
To provide a reciprocal mechanism, a control method therefor, a ticket cutting device equipped with the reciprocal mechanism, and a sheet processing device, for stopping a movable member driven with a DC motor at a target position while ...
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JP2010017368A |
To achieve a drum type washing machine allowing the prevention of automatic turn-off by an inverter circuit failure or abnormally high voltage detection while keeping optimum brake control without an influence of dispersion during assemb...
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JP4404409B2 |
At a bobbin winding station, to stop the electric drive motor (13) for the grooved drum (10) to give the reciprocating yarn guide movement, the motor is fed with a braking current in the opposite direction to the nominal current supply. ...
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JP2010004713A |
To suppress operation of a carriage from going into an unstable state, when controlling a motor that drives the carriage which is moving reciprocatively.A motor control apparatus for controlling a motor for driving a carriage that moves ...
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JP2010500069A |
A cleaning appliance includes a motor arranged to drive a fan for generating suction air flow and a cleaner head having a drivable agitator with a dedicated motor. The agitator drive motor has a selectively-operable switch and a resettab...
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JP2009303395A |
To provide a brake circuit for a linear motor, capable of reducing power consumption in switching operation and controlling the braking force of the linear motor from the outside.The brake circuit for a linear motor has: a three-phase fu...
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JP2009303376A |
To provide a brake circuit for a linear motor, capable of controlling the braking force of a linear motor from the outside.The brake circuit for a linear motor has: a three-phase full-wave rectifier circuit 20, connected in parallel with...
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JP4389975B2 |
To provide the safety system and safety equipment that can be constituted by only one main magnetic contactor, although two main magnetic contactors have been required for duplication to interrupt the power supply to the three-phase moto...
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JP2009303377A |
To provide a brake circuit for a linear motor, capable of gradually controlling a brake current from the outside.The brake circuit for a linear motor has: a full-wave rectifying circuit 20 connected in parallel to loads 1 of the linear m...
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JP2009303480A |
To provide a method of the dynamic braking of a motor.In the method, the inverted energy of a motor is dissipated (270) inside the motor windings during the non-current feeding term of the commutating sequence of the motor by short-circu...
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JP4379053B2 |
In determining a starting point of a motor of an electric actuator during its initialization procedure, when a rotation angle sensor detects pulse signals in a certain initialization pattern, power supply to the motor is stopped by the c...
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JP4378935B2 |
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JP2009284575A |
To provide a device for controlling a traveling mechanism that properly stops the traveling mechanism of a lower traveling body which is driven by a motor, when an electric wire between a battery and the motor is disconnected.In this con...
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JP4371453B2 |
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JP4367341B2 |
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JP4369500B2 |
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JP4367620B2 |
A failure monitor designed to monitor a failure in operation of a motor drive control system. The system works to drive a motor-driven member through an output shaft and an electric motor and includes an output shaft angular position sen...
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JP2009268326A |
To provide a motor system capable of exactly making an actuator operate, and detecting the actuator to have hit an obstacle.A positional signal generator 13 discontinuously changes the signal value by means of a mechanical switching oper...
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JP4362872B1 |
Provided are a device for controlling a pulse jet type dust collector, in which a blower motor can cool itself even if dust-collecting target facilities repeat runs and stops, and a method for controlling the pulse jet type dust collecto...
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JP4361116B2 |
A motor drive apparatus 1 having a dynamic braking circuit 5 for producing a deceleration torque utilizing a braking force caused by a synchronous motor 4 acting as a generator when the synchronous motor 4 is deenergized, is equipped wit...
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JP4362084B2 |
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JP2009261193A |
To excellently inhibit the generation of brake abnormal noise in a drive-source control device that makes an electric motor stop, when a vehicle is in a stopped state.If a brake fluid pressure is low, a brake rotor is relatively rotated,...
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JP2009254491A |
To highly accurately perform motor needle stop despite being inexpensive.This sewing machine includes: a main spindle 14 for transmitting a vertical movement driving force of a sewing needle; a sewing machine motor 11; a motor control de...
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JP4358449B2 |
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JP4358366B2 |
Stop control device for a shutter , door or similar driven by an asynchronous electric motor (1) with phase shift capacitor. The motor is stopped when the shutter makes contact with an end stop or an obstacle. The device uses a motor par...
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JP4356447B2 |
In a vehicle air conditioner with an electrical actuator system, a transmission mechanism transmits a rotation force of an electrical motor to an air mixing door when first and second pulse signals are generated from first and second bru...
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JP4355545B2 |
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JP4351184B2 |
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JP4353524B2 |
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JP4352446B2 |
A process for displacing a motor vehicle part between at least two positions and a drive device for executing this process in which the motor vehicle part is driven by an electric motor (10), a pulse signal is generated according to the ...
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JP4350878B2 |
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JP2009240079A |
To solve the problems that an abnormal vibration occurs due to the distribution inductance and distribution capacitance of a motor cable, EMI noise is generated by ringing superposed on a power supply of a motor, and moreover, insulation...
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JP4344569B2 |
A shunt resistance provided between the motor and the ground detects the motor (M1) current (ID) as a voltage value. A diode, which is provided between a positive side of the power supply and the control circuit, protects the control cir...
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JP4339916B2 |
A motor driving apparatus comprises a charge/discharge control circuit for controlling charge to or discharge from a capacitor connected in parallel in a link section between a converter and an inverter, and a current control means for c...
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JP2009225611A |
To regenerate electric power generated from a DC motor 11, with a simple configuration.When it is determined that the electric power generated from the DC motor 11 is larger than that required to drive a three-phase synchronous motor 22,...
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JP2009220807A |
To provide a motor drive for a car brake capable of suppressing damage by temperature rise of a three-phase motor or a component of its control system.When an ECU determines that the temperature of a coil has reached a reference temperat...
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JP2009225497A |
To provide a servo amplifier which has a power regenerating function that can achieve the optimization (downsizing), the cost reduction, and the energy saving of a device, by being able to avoid an excessive specification of device struc...
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JP4337263B2 |
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