Study of Fuzzy and PI controller for Permanent-Magnet Brushless DC motor drive

Abstract

This paper presents the study and analysis of the fuzzy and PI control system applying to Permanent-Magnet Brushless DC (BLDC) motor. The most commonly used controller for dc motor controller system is Proportional-Integral (PI) controller. However, the PI controller has some disadvantages such as: high starting overshoot, sensitivity to controller gains and sluggish response due to sudden load disturbance. Further, fuzzy control is proposed and the performance of fuzzy controller was compared with PI controller. Simulation result are presented and analyzed for both fuzzy and PI controllers. It is observed that fuzzy logic based controlled give better responses than traditional PI controller for the speed control of dc motor drives.