Pneumatic Servodrives Control Using On/off Solenoid Valves

This article is concerned with the problems of position-controlled pneumatic servodrive. The position control is implemented using low-cost on/off solenoid valves in place of costly proportional valve. The control methods based on simply on/off control algorithm and on pulse-width-modulation (PWM) algorithm are presented. The experimental results are shown that the system performances are comparable to position control using proportional valve.