Development of a control system insensitive to electromagnetic hazards using a photo-fluidic interface

摘要

This paper describes the development of an optical servo system using a photo-fluidic interface. This system is insensitive to electromagnetic noise because it uses optical control signals instead of electric control signals. First, the concept of an opto-pneumatic servo system, one of the optical servo systems, is proposed and a cart position control system is explained as an example. In the system, a photo-fluidic interface and a fluid booster amplifier which can be driven by very low differential pressure from the photo-fluidic interface are very importan components. These constructions and operating principles are described. second, the tested opto-pneumatic servo system, the cart position control system, is introduced. The static and dhynamic characteristics of the optical servo valve are investigated and its adjustiment method is shown Finally, the control scheme and experimental results of the cart positioning are presented, and it is shown that the satisfactory position control has been achieved.