Speed control device for a moving member

Details Speed control device for a moving member Speed control device for a moving member

1975-09-11

1978-08-01

Dobeck, B.

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

318593, 250201, G05B 106

Patent

active

041045734

ABSTRACT:
A speed control device for a moving member which comprises a moving member, driving mechanism for the moving member, position coherent light containing a position information of the moving member, reference coherent light so formed as to not containing the position information of the moving member for required formation of the position coherent light and an interference light, interference light forming means utilizing the position coherent light and the reference coherent light, means for detecting interference light formed by the interference light forming means, and controlling means for the driving means to render the detected output obtained by the detection means to become a sinusoidal wave having a predetermined frequency.

REFERENCES:
patent: 3323030 (1967-05-01), Inaba et al.
patent: 3501683 (1970-03-01), Webb
patent: 3634682 (1972-01-01), Gold
patent: 3708657 (1973-01-01), Kelling
patent: 3728607 (1973-04-01), Isak

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