Phase-lock control device

Details Phase-lock control device Phase-lock control device

1978-04-10

1981-11-17

Smith, Jr., David

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318318, 318327, H02P 516

Patent

active

043013953

ABSTRACT:
A control device for phase-locking a rotating or traveling member to a reference signal within a short time at its starting stage, in which a phasic error signal produced as a result of comparison of the phases of the reference signal and a signal representative of the phasic position of the member is fed to the driver of the member through a gate which is non-conductive unless the speed of motion of the member reaches a predetermined value.

REFERENCES:
patent: 3309597 (1967-03-01), Gabor et al.
patent: 3621353 (1971-11-01), Matley
patent: 3780364 (1973-12-01), Henderson
patent: 4008424 (1977-02-01), Bompani
patent: 4080555 (1978-03-01), Kawada
patent: 4081728 (1978-03-01), Nikami et al.

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