Servo motors are prone to low-frequency vibration at low speeds. Vibration frequency and load conditions and drive performance related to the general view that the vibration frequency for the motor no-load start frequency of half. This low-frequency vibration phenomenon determined by the working principle of the servo motor is very unfavorable to the normal operation of the machine. When the servo motor works at low speed, generally should be used to damping technology to overcome the low-frequency vibration phenomenon, such as adding a damper on the motor, or drive using subdivision technology. Currently used in computerized embroidery machines, most of the servo motor for the five-phase hybrid servo motor, the purpose is to use a high number of phases of the stepping motor to reduce the step angle and improve the control accuracy, but the use of this way to obtain the performance of the improvement is limited. And the cost is relatively high. The use of subdivision drive technology can greatly improve the operating quality of the servo motor, reduce torque fluctuations, inhibit oscillations, reduce noise, and improve the step resolution. If the reactive servo motor, in the performance significantly improved at the same time can also greatly reduce the cost of the product.