Servo control for motor having cutoff device for preventing moto

Details Servo control for motor having cutoff device for preventing moto Servo control for motor having cutoff device for preventing moto

1986-09-08

1987-12-08

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

318434, 318436, 318469, G05B 106

Patent

active

047120533

ABSTRACT:
A device for preventing a motor from being locked comprises a position indicator for indicating a position to be moved in response to rotation of the motor, a position detector for detecting the position being moved in response to rotation of the motor, a servo control unit for supplying a current to the motor so that an output signal from the position detector will be equalized with an indication by the position indicator, a stop detector for detecting stoppage of the motor in response to a differential of the output signal from the position detector, and a cutoff control unit for cutting off the current supplied from the servo control unit to the motor in response to an output signal from the stop detector.

REFERENCES:
patent: 3400315 (1968-09-01), Doucette
patent: 3483455 (1969-12-01), Klysa, Jr. et al.
patent: 3644816 (1972-02-01), Gilbert
patent: 3755726 (1973-08-01), Knipe et al.
patent: 3887844 (1975-06-01), Yoshida
patent: 3916272 (1975-10-01), Grumleitner et al.
patent: 4030005 (1977-06-01), Doemen
patent: 4270074 (1981-05-01), Duckworth et al.
patent: 4295082 (1981-10-01), Moto et al.
patent: 4591773 (1986-05-01), Numata

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