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Patent Searching and Data


Matches 1,401 - 1,450 out of 13,794

Document Document Title
JP2013223363A
To provide a motor drive control device which, when abnormality occurs in a drive control circuit, can suspend drive instruction signals generated by the drive control circuit simultaneously, thereby letting an AC motor to stop safely.A ...  
JP2013215831A
To provide a spindle unit capable of braking a spindle according to the weights of a mount and a rotary tool.A spindle unit 26 comprises a rotary tool mounted in a mount, an electric motor 58 driving a spindle 26, and a motor driver. The...  
JP5315937B2
To prohibit the use of an expensive clutch brake for a shutoff valve to hold an valve opening condition, to reduce power loss and the load of a mechanism part, and to prevent the occurrence of water hammering resulting in damage to the v...  
JP5315972B2
To prevent the occurrence of water hammer when a shut-off valve is closed using an induction motor for the shut-off valve. The shut-off valve having a spring that urges a transmission mechanism connecting an output shaft connected to the...  
JP5317918B2
A control device for a hoist, which enables easy judgment of the lifetime of a brake of a hoist is provided. The time setting unit sets the time from startup of a double winding induction motor to disengagement of the brake and the time ...  
JP2013538550A
The 1st electric motor by which an assembly object has 1 or a plurality of 1st winding which it is a movable mobile element and the 1st electric motor for driving a mobile element to a base part, and each equips with at least two inputs ...  
JP5313493B2
To suppress distortion of an input supply voltage at regeneration of power supply in a motor drive unit. The motor drive unit (1a) includes a converter circuit (2) with a power supply regenerative function to convert input ac power to dc...  
JP5309546B2
A control device for an industrial vehicle including an electric storage device, a load device, a hydraulic pump, and a load motor is disclosed. The electric storage device stores regenerative power generated through regenerative braking...  
JP5313454B2
To accurately control stop of an electric vehicle using an inexpensive Hall IC while minimizing the influence of an error component. The electric vehicle 100 includes: a control lever 82; an axle 102; a motor 10 whose rotation is control...  
JP5309242B1
A second q-axis current command value, which is set by a q-axis current command value setting unit when an alternating-current power source fails at the time of driving of a synchronous motor, and a second d-axis current command value, w...  
JP2013207954A
To attenuate residual magnetic flux of an induction motor in a short time without supplying excessive current.A driving device of an induction motor continues, for prescribed time, operation to output zero voltage from an inverter device...  
JP2013198265A
To alleviate a peak of a reverse electromotive current at the time of stop of a DC motor when the DC motor used for a printer is PWM-driven by open-loop control.A printer comprises a DC motor and a motor control section for PWM-driving t...  
JP2013192347A
To achieve a motor controller capable of maintaining an MOSFET in the on state even when the voltage output toward the gate terminal of the MOSFET is interrupted by turn-off operation of an ignition switch.An ECU 1 in the power window de...  
JP2013188000A
To provide a low power consumption motor drive which can decelerate rotation of a motor by an external force quickly, by braking the motor with an appropriate torque, and can hold the state where rotation of the motor is decelerated or s...  
JP5293390B2
A power supply control device controls a power supply connected to a motor and includes: an AC/DC converter that makes a first DC power supply; a DC/DC converter that makes a second DC power supply out of the first DC power supply; a fir...  
JP5289093B2  
JP5285930B2  
JP2013179741A
To realize a motor drive device whose mechanical contacts used for shorting between motor coils of a synchronous motor for dynamic brakes have a long life, whose brake time is short, and whose structure is simple and low cost.A motor dri...  
JP5281567B2
In a control system and a method for operating a permanent-magnet electrical machine, when the electrical machine is switched off after one of a functional computer and a monitoring computer of the control system has identified a fault, ...  
JP5280081B2
To provide a winch that utilizes energy without waste by storing a regenerative electric power during lowering operation of a hoisting/lowering electric motor in a capacitor while returning the regenerative electric power to a commercial...  
JP5276469B2
To provide an overvoltage protector which suppresses an overvoltage when a power converter is stopped and restarts the operation of the power converter quickly. If the power converter 2 is stopped while a synchronous machine 1 is driven,...  
JP2013165536A
To decrease and stop rotational speed of a motor in a short time when a power supply from a power source stops.A drive controller 1 of a brushless motor 20 includes: an inverter circuit 2 which contains first arm side switching elements ...  
JP5269363B2
To provide a method and a stopper device for decing an origin in an actuator which returns to an origin at high speed at an end of a work area and reduces the time for deciding an origin in equipment. In this method, a slider reciprocati...  
JP2013162578A
To provide a motor control device which can apply an electric brake to a motor when a power supply is suspended, and permits downsizing and cost reduction.A first switch 11 to a sixth switch 16 connect individual coils L1-L3 included in ...  
JP5264969B2
To provide a motor driving controller capable of protecting a motor driving controller from the electromotive force of the motor generated by the rotation of a fan due to an outdoor wind, increasing the number of turns in the winding of ...  
JP5260719B2
A motor drive apparatus includes a rectifier which converts AC power to DC power and DC power to AC power, an inverter which converts the DC power output by the rectifier to AC power and supplies the AC power to a motor, and which conver...  
JP5260718B2
A servomotor drive device has a first converter, a regenerative resistor circuit having a first switching element and a regenerative resistor, a first connection part configured to connect a second converter in parallel to the regenerati...  
JP5260382B2
To provide a control device for an eddy-current brake, which enables generation power control obtaining necessary power for subsequent excitation from kinetic energy at dynamic braking using a small capacity of an auxiliary circuit power...  
JP5260090B2
An object of the present invention is to improve the performance of a power transducer while efficiently using the power semiconductor also by managing the permissible duty factor of the power semiconductor in the regenerative braking ci...  
JP2013153605A
To provide a motor control device capable of controlling the power storage amount so that overdischarge or overcharge of a power storage device to be mounted is not performed, or unnecessary charge and discharge are not performed.A charg...  
JP2013148226A
To provide a range hood configured to stop a fan right after straightening vane removal.A range hood includes a proximity switch 6 for detecting that a straightening vane 50 is removed and a DC generating source 9 for outputting a DC for...  
JP2013150368A
To provide a power supply device for motor drive which permits a regenerative voltage discharge operation test to be conducted with a smaller test voltage enabling easy handling such as voltage adjustment, can preferably prevent burnout ...  
JP2013146142A
To provide a motor drive device with a simple structure, which protects a switching element from induction voltage which a motor generates due to reverse input torque while not connected to a direct-current power source.A first drive por...  
JP5244222B2  
JP2013143830A
To provide an elevator controller having a pre-damage detection function of a regenerative resistor.The elevator controller comprises: a regenerative resistor 10 consuming the regenerative power from a motor 5; a switching element 11 for...  
JP5241367B2  
JP2013129251A
To provide a vehicle seat apparatus with a simple configuration that can specify a rotational direction after a motor drive stop, and suppress a generation of an error in detecting a position based on counting of pulses of a motor.An ECU...  
JP5225314B2  
JP5226253B2  
JP2013527100A
A braking device for an elevator is disclosed. The device may include a motor, a braking system, a first switch, and a second switch. The motor may be capable of generating a counter-electromotive force. The braking system may move to a ...  
JP5218220B2
A turbomolecular pump having a pump main unit having, at least, a rotary vein provided on a rotor, a static vein for working in cooperation with the rotary vein to perform a vacuum exhaust, and a motor for driving the rotor, comprising: ...  
JP5221735B2
A control apparatus for a motor includes, a position detection unit which detects the position of a driven body, a positional error acquiring unit which acquires for each sampling cycle a positional error representing a deviation between...  
JP5220298B2  
JP5206130B2
A regenerating braking system is provided, which includes: a synchronous motor with field coil excitation including a cylindrical stator coil, an inverter electrically connected to the stator coil, a battery electrically connected to the...  
JP2013115994A
To provide a motor drive device that is capable of detecting power failure on an AC power supply side also during a rectifier regenerative operation to thereby preclude erroneous detection of power failure.A motor drive device 1 includes...  
JP5201300B2
This motor control device computes a correction value with a deviation correction unit when a move command generation unit has detected an emergency stop executed by an emergency stop command unit and transmission of a move command from ...  
JP5201438B2  
JP2013102658A
To suppress an increase in power-supply voltage, when rapidly decelerating a motor or switching a normal rotation/reverse rotation of the motor.A motor driving device 10 includes: a logic circuit 12 for carrying out on/off control of eac...  
JP2013102611A
To provide a servomotor drive device to which a power source regeneration function can be added in accordance with operating conditions of an industrial robot.A servomotor drive device 2 comprises: a converter 201a having diodes 209a-1, ...  
JP2013102617A
To reduce regenerative power consumed by a regeneration resistance while suppressing increases in device size and cost.A method for controlling a motor connected to a regeneration circuit having the regeneration resistance for consuming ...  

Matches 1,401 - 1,450 out of 13,794