永磁同步直线电机的模糊PID控制研究

Based on the analysis of permanent magnet synchronous linear motor (PMLSM) mathematical mode, voltage equations and thrust equation of the linear motor in the d-q axis is derived and a three-loop control system is proposed. a self-adaptive fuzzy PID control system for velocity-loop is designed by combined the advantages of traditional PID control algorithm and fuzzy control algorithm. According to the characteristics of PMLSM and possible uncertainties Fuzzy inference rules are designed for realizing fuzzy PID control of velocity-loop. The simulation model of PMLSM and the entire control system are built in Matlab/Simulink platform in order to analyse fuzzy PID control and traditional PID control. The Matlab simulation results shows that the fuzzy PID which is designed for the velocity-loop of PMLSM can significantly improve the static and dynamic performance of PMLSM.