Speed control system for electric motor

Details Speed control system for electric motor Speed control system for electric motor

1987-07-01

1988-04-05

Weldon, Ulysses

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318317, 318345B, H02P 726

Patent

active

047361425

ABSTRACT:
A speed-control system for an electric motor comprises a circuit for setting a desired motor speed and providing a speed-control signal, a circuit for sensing motor voltage and providing a motor voltage-related signal, a circuit for sensing current flow in the motor and providing a motor current-related signal, a summing point for combining the sensed current and sensed voltage-related signals to provide a motor speed-related signal, and a triggerable switch for combining the motor speed-related signal and the speed-control signal to provide an error signal for controlling the motor speed.

REFERENCES:
patent: 3229182 (1966-01-01), Kubler
patent: 3470437 (1969-09-01), Douglass
patent: 3475672 (1969-10-01), Oltendorf
patent: 3518519 (1970-06-01), Callan
patent: 3601673 (1971-08-01), Mason
patent: 4039913 (1977-08-01), Clegg
patent: 4074175 (1978-02-01), Born et al.
patent: 4328447 (1982-05-01), Davis et al.

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