Experimental Comparisons of the Control Solutions for Pneumatic Servo Actuators (original) (raw)

This paper points to the control problem of the pneumatic servo actuator in positioning, comparing through experimental tests a commercially available industrial controller and classic linear controllers. Although there are many papers covering the control of servo pneumatic drives, was observed the lack of a comparison involving these proposed and tested control strategies with controllers that have recognized use in industry. This paper begins with the presentation of the experimental system where the comparison work was developed. It continues with a short study of mathematical models of pneumatic systems to know the main non-linearities involved. At sequence, P, P I and PID controllers are described and compared with commercially available Festo SPC-100 controller through experimental tests, where are measured the following variables: pneumatic actuator position, position error, pressures in the actuator chambers and the valve control signal. Graphics to each controller are plot...