Design of Fuzzy-Immune-PID Controller in Servo Control System

A fuzzy-immune-PID controller based on FPGA was designed by combining good anti-interference and robustness by fuzzy-immure-PID controller with the realtime characteristics built by FPGA.It improved the performance of the servo control system.Firstly,principle and algorithm of the fuzzy-immune-PID controller were discussed and its mathematical deduction was carried out.Then with the off-line calculation,look-up table technology was employed to perform the fuzzy immune control.The PID controller based on Verilg carried out the squential simulation.Expenimental results show that the method is reasonable and has a better performance than the traditional one.The proposed method is efficient to implement intelbigent control strategy to small machines.