Design of FPI-PD Controller for Brushless DC Motor

In this paper, a new fuzzy proportional-integral-proportional-derivative (FPI-PD) controller is designed, in which fuzzy PI controller is in the forward path and conventional PD controller is in inner feedback loop. The gain parameters of the proposed controller are calculated by gradient descent optimization method. The performance evaluation of this controller is performed for speed control of brushless DC motor in MATLAB/Simulink. The obtained responses are compared with conventional PID controller and the existing fuzzy PID controller. It reveals that proposed FPI-PD controller is more efficient than both the above mentioned controllers.