Adaptive Generalized Predictive Control on Electro Hydraulic Servo Feeding System of Band Saw

Abstract

In view of the shortcomings of band saw feeding system on position and micro-feeding speed tracking response characteristics, an electro-hydraulic servo feeding system of band saw is designed and its difference mathematical model is presented. Then, a new adaptive generalized predictive controller (AGPC) for the electro-hydraulic servo feeding system is provided. The controller identifies the parameters of the system model by system control input and output on line. Through minimizing performance evaluation function J which is based on j-step ahead predictive output of CARIMA model, system control variable can be got. The simulation and experiment application show that the proposed controller has better position precision and feeding tracking performances than the traditional PID controller and can well address feeding process of band saw.