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On the Application of an Industrial Motion Controller to a Pneumatic Positioning System


 This paper documents experience with the application of an industrial motion controller, originally intended for an electric servomotor positioning system, to a pneumatic positioning system. The pneumatic system consisted of a rodless cylinder connected to a proportional servovalve with a command signal generated by the motion controller. A linear analog potentiometer provided position feedback to the controller. The payload was 5 kg with a stroke of 0.6 m. Results demonstrate that respectable performance can be achieved, although the PID tuning technique normally implemented with the motion controller could not be used. An achievable motion trajectory is identified, and an appropriate PID tuning techniques is presented.