Design of Self-Tuning Regulator for Brushless DC Motor Speed Control

Brushless DC (BLDC) motor is one type of dc electric motor that has various advantages such as higher of efficiency, torque under lows peed range, and power density, and lower maintenance because this motor does not use the brush in the commutation process. BLDC drive involves a complex process, so it takes the right control method to control its speed. This paper proposed Self-Tuning Regulator (STR) of Proportional Derivative (PD) controller where the parameters are adapted using fuzzy-logic. STR PD controller also can follow fixed reference faster than PD controller. It can follow speed reference change up and overcome the interference from the outside of a momentary disturbance, and STR PD controller technique had better performance than the PD controller, mainly when the motor was working at speed reference change down, it can minimize of undershoot that caused by PD controller.