The MC34937 is a new field-effect transistor(FET)pre-driver designed to enable three-phase motor control configurations with stable digital accuracy.Presented an intelligent drive system of the brushless DC motor based on MC34937.This system provided a more flexible hardware and software solutions,and greatly reduced the cost of the control system and was of high practical value.Experiments show that the system is smooth and steady when it starts and idle runs,and the motor speed keeps stable with sudden ad...