Simulation Studies of CMAC-PID Combined Control for Electro-hydraulic Position Servo System

Abstract

An electro-hydraulic servo system is taken as control object, the control strategy combining CMAC network with the PID controller is discussed. The inverse dynamic control is realized using CMAC neutral network as feed-forward controller, the PID controller is acted as feedback controller to subdue the turbulence and guarantee its stabilization. Output signals from the CMAC network and from a conventional PID controller are integrated to constitute an overall output signal, which then acts on the controlled object. Thus, good regulating performance by itself is guaranteed. The AMESim model of the electro-hydraulic servo control system is established, and the collaborative simulation of hydraulic system model and control algorithm is implemented. Simulation results show that this control strategy is effective and practical.