Stepper Motor Subdivision Drive technology is a kind of driving technology which can improve the performance of stepper motor. American scholar, for the first time in the United States increment motion control system and device annual meeting, proposed the step Motor step Angle subdivision control method. In the following more than 20 years, the Stepper Motor Subdivision drive has been greatly developed. Gradually developed into the last century of the 90 's fully mature. In China, the research on the technology of subdivision driving is similar to that of foreign countries.