The Fuzzy PID Controller Performance in BLDC Motor Rotor Speed Variable

This study presents the performance of a fuzzy PID controller on a variable speed of brushless DC (BLDC) motor. BLDC motors are widely applied in industry and transportation. BLDC motor control still mostly uses conventional PID. The weakness of conventional PID control is that when the target input changes, the output performance also changes. Therefore, a controller with a simple structure with high performance is still necessary to be explored. This study uses a simple fuzzy control structure with three inputs and one output from the conversion of conventional PID controls. Membership functions (MFs) operating ranges for input/output are defined through error, integral error, and differential error parameters. Fuzzy PID controller performance was compared to conventional PID controllers. Simulations were performed using Matlab/Simulink. The results showed that the Fuzzy PID controller had superior performance without overshoot, had a rise time of 0.005 seconds, and a settling time of 0.009 seconds. The energy saving of a fuzzy PID controller reached 99.8%.