Motor rotation control apparatus

Details Motor rotation control apparatus Motor rotation control apparatus

1986-03-25

1987-04-14

Dobeck, Benjamin

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318341, 318608, 318326, H02P 516

Patent

active

046581910

ABSTRACT:
A control apparatus whereby each time a motor adapted to start and stop its rotation repeatedly a plurality of times is rotated, the phase reference of a rotating object is adjusted and the rotating object is locked to a normal speed in a short period of time from the start. The control apparatus includes circuitry for detecting that the difference between the phase of a detection clock signal and the phase of rotation of the motor is less than predetermined value and the control of the motor is switched between the speed control and the phase control in accordance with the phase difference.

REFERENCES:
patent: 3829747 (1979-08-01), Woolfson et al.
patent: 3950682 (1976-04-01), Dohanich
patent: 4380723 (1983-04-01), Leis et al.

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