Phase locked loop motor control system

Details Phase locked loop motor control system Phase locked loop motor control system

1981-11-30

1984-04-17

Dobeck, B.

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Synchronizing or phasing control

318 87, 318 60, 318314, G05B 106

Patent

active

044437420

ABSTRACT:
A phase locked loop control system, in particular for use for synchronizing the operation of a carriage drive motor and a main drive motor in a photocopier, uses a digital frequency- and phase-comparator and relies on the output pulses, used to power the slaved motor, being shaped so that each positive-going d.c. drive pulse is followed by a negative-going d.c. braking pulse of smaller amplitude, to provide positive registration of the slaved motor with the pulsed driving signal.

REFERENCES:
patent: 3258669 (1966-06-01), Krassoievitch
patent: 3622703 (1971-11-01), Ricketts, Jr.
patent: 4092576 (1978-05-01), Michner
patent: 4149193 (1979-04-01), Michner

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