Electricity: motive power systems – Limitation of motor load – current – torque or force
Patent
1996-06-10
1998-01-13
Ro, Bentsu
Electricity: motive power systems
Limitation of motor load, current, torque or force
318430, H02P 118
Patent
active
057083355
ABSTRACT:
An on-car motor driving apparatus is equipped with a motor for moving a moving unit such as a window of a motor car, a motor driving controller which controls the revolution, stop, and rotational direction of the motor, and a current measuring and comparing device which measures the variation in current per unit time of the motor and compares the measured variation in current with a preset value. The on-car motor driving apparatus stops the revolution of the motor and/or reverses the rotational direction of the motor through the motor driving controller. The apparatus is further equipped with a voltage measuring device for measuring motor driving voltage and a voltage-based time setting device which changes the length of the unit time in accordance with the driving voltage value measured by the voltage measuring device. Line voltage is supplied to a differential amplifier only when the line voltage is supplied to the motor.
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Kawata Toshihiko
Miura Yukio
Mizuta Ken
Shibazaki Ken
Alps Electric Co. ,Ltd.
Bever Patrick T.
Ro Bentsu
Shoup Guy W.
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