Motor control apparatus

Details Motor control apparatus Motor control apparatus

1981-04-07

1983-08-02

Truhe, J. V.

Electricity: motive power systems

Plural diverse motor controls

318379, H02P 312

Patent

active

043968767

ABSTRACT:
A motor control apparatus which includes a pulse generator for providing a first signal for specifying the operational condition of a motor, and a motor driver for providing a second signal for driving the motor when the first signal is at a first level and providing a second signal when the first signal is at a second level. The motor control apparatus further includes a comparator, which compares the back electromotive force of the motor with a reference level when the first signal is at the second level and providing a third signal when the back electromotive force is within a given level range prescribed by the reference level. A switch circuit closes a circuit path through which a back electromotive force current produced by the back electromotive force flows when the second and third signals are provided, thereby applying electromagnetic braking with respect to the rotation of the motor.

REFERENCES:
patent: 3700990 (1972-10-01), Shuey et al.
patent: 3854080 (1974-12-01), Bambara et al.
patent: 3860860 (1975-01-01), Moran et al.

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