Adaptive Fuzzy Sliding Mode Control of Electro-hydraulic Position Servo System of Pump-controlled Cylinder

An adaptive fuzzy sliding mode variable structure control approach was proposed for tracking control problems of the electro-hydraulic position servo system of the pump-controlled cylinder.In order to make the equivalent controller independent of the object's accurate mathematic model,the equivalent controller was substituted by adaptive fuzzy controller.To reject disturbance and reduce chattering,a fuzzy scheduling mechanism was designed to tune the control gain.The simulation results show that the system possesses strong dynamic response,stable control accuracy and robust to structure parameters uncertainties and external disturbance.