“…Cause develop motor control integrated, modern design mutual development and motor control, motor manufacturing technology, microelectronics, power electronics technology combine to produce a number of new motors, such as brushless DC motors, power inverter AC motors, switched reluctance motors, ultrasonic motors [5][6]. The new motor is an electric motor and electronic control part organically combine to form a indivisible whole, form a system, leaving the control circuit, the motor itself cannot run alone.…”