Controlling Speed Of Brushless DC Motor By Using Fuzzy Logic Controller

Abstract

Brushless DC motor is a type of DC motor popular in the world because it’s easy to use and maintenance free. This paper discuss-about how to control the speed of a BLDC motor by implementing a fuzzy logic controller. The BLDC motor is equipped with a 3-hall sensor to detect rotor location. The system using a six-step commutation switching method for the commutation system on the BLDC motor. The output waveform of the six-step commutation method is a square wave with 120° difference each phase. This paper uses the PWM method to control the output of a 3-phase inverter. The fuzzy logic controller is implemented in this system. The fuzzy logic controller designed consists of 2 inputs and 1 output parameter. By implementing the fuzzy logic controller that has been designed, the speed response of the BLDC motor can rotate in accordance with the specified setpoint value and stable.