Control circuit for controlling the shaft speed of a motor havin

Details Control circuit for controlling the shaft speed of a motor havin Control circuit for controlling the shaft speed of a motor havin

1976-01-13

1977-08-09

Wyche, Benjamin W.

192 clutches and power-stop control

Clutch and brake

192104R, 310 95, 2351035R, F16D 6707

Patent

active

040405087

ABSTRACT:
A control circuit for controlling the shaft speed of a motor having clutch and brake devices comprises a speed detector for detecting the actual rotating speed of the motor and generating a first pulse signal having a period in inverse proportion to the actual rotating speed, a speed selector for setting the desired-speed of the shaft, a signal generator for generating a second pulse signal having a period in inverse proportion to the desired-speed from the speed selector, a first means for detecting the ratio of the period of the first signal to the period of the second signal, and a second means for controlling the operation of the clutch and brake devices in response to the detected ratio.

REFERENCES:
patent: 3371760 (1968-03-01), Willsea
patent: 3487438 (1969-12-01), Becker et al.
patent: 3505548 (1970-04-01), Seesselberg et al.
patent: 3599764 (1971-08-01), Daab et al.
patent: 3915271 (1975-10-01), Harper

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