Motor speed control apparatus

Details Motor speed control apparatus Motor speed control apparatus

1983-08-17

1986-01-07

Weldon, Ulysses

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318319, 318326, G05B 500

Patent

active

045636230

ABSTRACT:
A motor is controlled by pulse signals applied to the gates of thyristors in a thyristor switching circuit. The speed of the motor is detected by a speed detector, and the instantaneous speed of the motor is calculated on the basis of the current detection speed obtained at the present time and the detected speed obtained at least at one prior point of time. The speed control signal for the motor is calculated on the basis of the deviation between the instantaneous speed and an output signal of a speed directive apparatus. In accordance with the speed control signal, the pulse signals applied to the gates of the thyristors are outputted from a gate pulse generator.

REFERENCES:
patent: 3504260 (1970-03-01), Staples
patent: 3624474 (1971-11-01), Nolf
patent: 3878446 (1975-04-01), Brandt
patent: 4109184 (1978-08-01), Weber
patent: 4151450 (1979-04-01), Fukuma et al.
patent: 4266168 (1981-05-01), Andersen

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