An Optimal Fuzzy-PI Controller for the High-Performance Speed Control of a PMSM

The purpose of this paper is to present an adaptive method for improving the control performance of permanent magnetic synchronous motor (PMSM) in operating condition. The approach allows to reduce speed tracking error and to cope with external disturbance. The methodology of speed control is presented in detail and two controllers are tested, traditional proportional integrative (PI) controller and fuzzy proportional integrative (fuzzy-PI) controller. Both controllers showed good results from experiments presenting similar behaviors. However, the fuzzy-PI stood out positively in some stages. The main motivation of this paper is the extension of fuzzy logic algorithm to improve servo control performance in industrial applications.