Solid state controller

Details Solid state controller Solid state controller

1978-04-28

1981-06-30

Truhe, J. V.

Electricity: motive power systems

Positional servo systems

With protective or reliability increasing features

318599, 318615, G05B 2302

Patent

active

042765021

ABSTRACT:
An improved alternating current prime mover control system and method for, for example, the control of a valve position or other physical variable whose state can be sensed or calculated wherein the state of the physical variable is compared with a reference variable to generate, in conjunction with a waveform generator, a fixed amplitude signal that has variable time duration which feeds a part of the control system that drives the alternating current prime mover source in more than one direction.

REFERENCES:
patent: 3445746 (1969-05-01), Delatorre
patent: 3686557 (1972-08-01), Futamura
patent: 3778696 (1973-12-01), Walters et al.

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