Motor brake control circuit for reducing motor stopping time

Details Motor brake control circuit for reducing motor stopping time Motor brake control circuit for reducing motor stopping time

1991-06-06

1993-02-02

Wysocki, A. Jonathan

Electricity: motive power systems

Braking

318 87, H02P 300

Patent

active

051840499

ABSTRACT:
A motor brake control circuit is provided with a coil short circuit for short-circuiting the power terminals of the coil once a brake signal is issued from its brake circuit so that the brake is forcibly and continuously applied to the motor. With such an arrangement, the time required for the motor to come to a complete stop after the issuance of a brake command signal is considerably reduced as compared with a motor that does not have such a coil short circuit and, therefore, comes to a complete halt only by natural deceleration. Further, since the motor is braked by the short-circuited motor coil when the brake control circuit is activated, there is virtually no affect on the motor by external force such as vibration to shift its rotary position in a braked condition.

REFERENCES:
patent: 4072879 (1978-02-01), Wadleigh
patent: 4085354 (1978-04-01), Harshberger, Jr.
patent: 4354147 (1982-10-01), Klaussner
patent: 4494058 (1985-01-01), Berti
patent: 4622499 (1986-11-01), Squires et al.
patent: 4922169 (1990-05-01), Freeman
patent: 5010283 (1991-04-01), Katajima et al.

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