MODEL PREDICTIVE CONTROL BASED ON LAGUERRE FUNCTIONS FOR LARGE RADIO TELESCOPE SERVO CONTROL SYSTEM

Deals with discrete-time model predictive control based on Laguerre functions (MPC-Laguerre) in azimuth servo drive control system of the large radio telescope RT-70. It is still fairly new in the field of electric servo drive control with elasticities. The mathematical model of augmented electromechanical system large radio telescope with elasticities is given and model predictive control algorithm with Laguerre functions is developed. With Laguerre functions, an alternative formulation of the cost function is obtained and leads reduction in number of parameters compared to the traditional model predictive control method. For large radio telescope servo electric driver, this method is known in advance, hence MPC scheme maybe easier from point of view in programming. Computer simulation results are carried out on Matlab/SIMULINK. In carried out simulation, the operation of conventional PID controller and proposed MPC-Laguerre controller in position loop has been compared. The results of comparison between simulation methods show that MPC-Laguerre controller has fewer errors servo tracking and better behavior.

Authors: M. P. Belov, T. H. Phuong

Direction: Electrical Engineering

Keywords: Large radio telescope, model predictive control, Laguerre functions, servo drive system

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