Motor stop control device

Details Motor stop control device Motor stop control device

1989-02-02

1991-12-03

Shoop, Jr., William M.

Electricity: motive power systems

Automatic and/or with time-delay means

Speed or rate-of-movement

388811, 388814, G05B 500

Patent

active

050702858

ABSTRACT:
A motor stop control device for stopping a motor rapidly. The motor control includes a pulse generator for generating a pulse signal having a pulse width which is in relation to the speed of the motor, a CPU, and a drive for driving the motor. When a motor stop command signal is produced when the motor being rotated forward, CPU operates the drive to produce a counter drive torque, and, at the same time, CPU starts to compare the pulse width of the present pulse signal with that of the previous pulse signal, and produces a signal when the pulse width of the present pulse signal becomes shorter than that of the previous cycle. When the signal is produced, the drive stops to produces the counter drive torque.

REFERENCES:
patent: 4510430 (1985-04-01), Ashikaga
"Patent Abstracts of Japan", vol. 9, No. 48, p. 338, Japanese Application No. 59-186174.
"Patent Abstracts of Japan", vol. 10, No. 382, p. 529, Japanese Application No. 61-172271.
"Patent Abstracts of Japan", vol. 9, No. 163, p. 371, Japanese Application No. 60-40565.
"Patent Abstracts of Japan", vol. 8, No. 228, p. 308, Japanese Application No. 59-107453.

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