Apparatus for controlling remote servoactuators using fiber opti

Details Apparatus for controlling remote servoactuators using fiber opti Apparatus for controlling remote servoactuators using fiber opti

1992-04-06

1994-06-21

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359124, 359144, 359143, 34087012, 34087028, H04J 1402, H04B 1024

Patent

active

053232569

ABSTRACT:
A fiber optic servoactuator control system. The system includes an actuator optical interface having light controlled electric switches for servoactuator control and for control of a solenoid and an optical modulator, all connected to a single optical fiber. The fiber is connected at its second end to a computer optical interface having three light emitters and a detector optically coupled into the single optical fiber. Only the single optical fiber and a pair of electric wires run between these two interfaces. The wires carry alternating and direct current to the actuator to power the device actuated, such as a servovalve. This system typically can be applied to the control of aircraft engines, primary flight controls, machine tools, ships and the like. The system is resistant to electromagnetic interference and pulses. The actuator may be located in a high temperature hostile environment, such as an aircraft engine.

REFERENCES:
patent: 3924120 (1975-12-01), Cox
patent: 4253192 (1981-02-01), Conally
patent: 4390974 (1983-06-01), Siems
patent: 4420840 (1983-12-01), Livermore
patent: 4942568 (1990-07-01), Khoe
patent: 4998294 (1991-03-01), Banks

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