Implementation of an Integral Sliding Mode Controller for a Pneumatic Cylinder Position Servo Control System

In this paper, an integral sliding mode control for a proportional valve pneumatic cylinder position control system was proposed to realize position regulating and tracking control. The key feature of this control scheme is using of multi-variable parameters design sliding surface method for the pneumatic servo system to improve the control performances. The validity of the proposed control scheme is verified through practical testing on an experimental pneumatic cylinder servo system device. In the cases of step, multi-step, and sinusoidal level position command inputs, the test results show that the proposed control scheme is capable of improving the tracking precision.