Abstract
An opto-pneumatic servo system employing opto-fluidic converter and pneumatic valve can operate the mechanical system directed by optical signal and work in hazardous environments because it does not use the electric immediate signal. The converter transforms the optical signal intensity into proportional fluid power, i.e. pneumatic pressure, although the pressure is stillweak and is not enough to operate the mechanical system directly. In this report, as the practical system, the opto-pneumatic servo valve is developed.The output pressure of Opto-fluidic converter is enlarged proportionally in the serial stages of fluidic amplifier and led to pneumatical input of servo valve as a pilot signal which excite the both sides of spool in the valve. The study is mainly carried out for optimizing the design of serial stage of fluidic amplifier, in order to generates the enough high output pressure which can be used as the pilot (operate) pressure in the pneumatic proportional valve. The performances and applications of thesystem will be shown.
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