Motor drive system including a feedback loop

Details Motor drive system including a feedback loop Motor drive system including a feedback loop

1974-12-30

1976-09-28

Rubinson, Gene Z.

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

318318, H02K 3700

Patent

active

039834689

ABSTRACT:
A motor drive system is described for driving a stepping motor in accordance with the generation of motion-command-pulses. The drive system includes a timing disc coupled to the motor to produce a feedback pulse for each stepped movement thereof, a timer for measuring a predetermined time interval, means for starting the timer with each generation of a feedback pulse, and means effective upon the generation of a feedback pulse or the run-out of the predetermined time interval, whichever occurs later, for generating a motion-command-pulse and for restarting the timer. The motor thus rotates one increment for each feedback pulse, but its speed is regulated to one in which the time of each increment of movement does not exceed the predetermined time interval of the timer.
The motor drive further includes a high-speed control, a deceleration control, and a stop-sequence control, effected by controlling the generation of the motion-command-pulses in response to the various commands given to the drive system, the arrangement being such that the motor position is never lost.
Also described is a synchronous-sequential-machine implementation of the motor drive system.

REFERENCES:
patent: 3443181 (1969-05-01), Kozol et al.
patent: 3523230 (1970-08-01), York
patent: 3628119 (1971-12-01), Abraham
patent: 3636429 (1972-01-01), Jakubowski et al.
patent: 3694725 (1972-09-01), Abraham et al.

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