Multi Permanent Magnet Synchronous Motor Synchronization Control based on Variable Universe Fuzzy PI Method

摘要

This paper describes a variable universe fuzzy PIcontrol method for multi permanent magnet synchronousmotors master-slave synchronization control system. The speedloop modulator and current loop modulator is determined bythe mathematical model of permanent magnet synchronousmotor. The vector control and voltage space vector pulse widthmodulation (SVPWM) control is applied to the closed-loopcontrol system. Considering the defects of the traditional speedregulator, fuzzy control and PI method is combined to solve themulti-motor synchronous system speed control problem.Meanwhile, in order to improve the control effect, theinterpolation variable universe fuzzy PI method is used tochange the rules to eliminate the multi motor synchronouscontrol steady-state error. The simulation model for multisynchronous permanent magnet synchronous motor controlsystem is built. Compared with fuzzy PI control method,simulation results verify the proposed method can improve therobustness against external changed interference coefficientadded to the system, change the dynamic characteristics, reducethe stable error and overshoot, and has better control effect.