Development of a servo system having opto-fluid converter

抄録

We developed the control system having opto-fluid converter.
This system is composed by opto-fluid converter, 4 stage cascades of Laminar Proportional Amplifier (LPA) which amplify the pressure difference from optical-fluid converter, and the pneumatic servo valve which sends the actual working air pressure to an actuator of a robot arm. By isolating an electric signal processing part and an optical signal processing part using the optical fiber, the control system which is not influenced by an electromagnetic noise can been realized. The optical signal is changed into the fluid pressure signal, without an intermediary electric signal, and can control the robot arm. The system can work under the severe environment where the radioactivity or an electromagnetic noise influences it, and an activity can be expected at medical spots, a nuclear reactor, etc. In this report, we have an analyzed the characteristics of the opto-fluid converter in order to design the high-speed response and optimize the converter.