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Application of Fuzzy Control in Sensorless Brushless DC Motor

Because the traditional brushless DC motor is in extreme environments, its position sensor cannot be used and the control effect is not good. Therefore, according to the mathematical model of the brushless DC motor, the rotor position information is obtained by the rotor position detection method, and the fuzzy PID control is proposed as the motor system control device, and compared with the simulation result waveform of the motor rotor speed under the PID control, the fuzzy PID control is obtained. Due to the fuzzy rules, PID parameters can be adjusted in real time, so that the output speed of the position sensorless brushless DC motor is more stable and effective than the PID control method.