Speed control system for small medical motors

Details Speed control system for small medical motors Speed control system for small medical motors

1982-12-02

1985-01-15

Weldon, Ulysses

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318308, 318331, 318334, G05B 500

Patent

active

044940572

ABSTRACT:
A speed control system for small medical motors. The system comprises a drive voltage regulation circuit, a current detection circuit which generates a detection signal in accordance with motor current, a voltage detection circuit which generates a detection signal in accordance with motor voltage, and a speed control circuit which controls the drive voltage regulation circuit in accordance with the detection signals of both detection circuits. With this system, the detection signal of the current detection circuit is positive-fed back, and the detection signal of the voltage detection circuit is negative-fed back to the speed control circuit to keep motor speed constant by effectively coping with abrupt load fluctuation.

REFERENCES:
patent: 3309596 (1967-03-01), Limley
patent: 3396323 (1968-08-01), Auld
patent: 3463990 (1969-08-01), Ross
patent: 3475672 (1969-10-01), Oltendorf
patent: 3527991 (1970-09-01), Sackin
patent: 3560828 (1971-02-01), Kobayashi et al.
patent: 3601673 (1971-08-01), Mason
patent: 3624474 (1971-11-01), Nolf
patent: 3781620 (1973-12-01), Toth
patent: 3838324 (1974-09-01), Watanabe
patent: 3955170 (1976-05-01), Geishecker
patent: 4048549 (1977-09-01), Satoh
patent: 4384241 (1983-05-01), Stillhard
patent: 4408244 (1983-10-01), Weible

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