Brushless DC motor (BLDCM) is a development of a new type of DC motor and microprocessor technology developed in recent years. The application of new power electronic devices with high switching frequency and low power consumption optimized control mode and permanent magnet Emerged, low cost and high level of magnetic energy. Brushless DC motors maintain the traditional DC motor speed regulation performance and increase the advantages of no sliding contacts and commutation sparks, high reliability, long service life, and low noise. Computer peripherals and household appliances have been widely used in many ways.