Optical feedback loop system for a hydraulic servovalve

Details Optical feedback loop system for a hydraulic servovalve Optical feedback loop system for a hydraulic servovalve

1986-03-03

1987-04-28

Cohan, Alan

Fluid handling

Pressure modulating relays or followers

Jet control type

251 11, 60530, G05D 1600

Patent

active

046605894

ABSTRACT:
An optical feedback loop system used in conjunction with an optical hydraulic servovalve. The system uses light energy from a single fiber optic bundle for expanding a gas in a pair of bellows. When one of the bellows is expanded a jet pipe connected to a servo fluid inlet is moved from a first fluid outlet to a second fluid outlet.

REFERENCES:
patent: 3386343 (1968-06-01), Gray
patent: 3603338 (1971-09-01), Kast
patent: 3710814 (1973-01-01), Shinn
patent: 3721421 (1973-03-01), Cliff
patent: 4114645 (1978-09-01), Pauliukonis

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