At present, China's DSP (Digital Signal Processing) control field with world-class level of technology is still lagging behind.However, under the market economy, the faster the DSP control technology applied to the actual design the desired product, the faster to seize the market, the more harvest interests.Therefore, the stepper motor DSP control of the subject is more fit the practical bias of the current situation.This article analyzes the existing DSPs with chip (Digital Signal Processors), stepper motor and its technology, commonly used in drive technology, selected according to their respective characteristics, more reliable and advanced the TMS320LF2407A chips and 57BYG203 4-phase stepper motor, combined with the more mature integrated module drivers and segmentation driven, the final design and improvement of a full DSP control system.Taking into account the different system working environment, precision and stability, so we have introduced a feedback and self-protection.Design in accordance with this process, we are able to achieve the control purposes, greatly shorten the design cycle and cost savings.The purpose of this design is to achieve to drive small loads precise drag control systems, in accordance with the above design ideas, design and completion of the DSP control of the stepper motor research topics.In fact, after becoming a kind ,it can make a practical significance to ouar life and social production .Keywords: DSP, control, stepper motor【如果满意,请尽快采纳最佳答案,谢谢!@】^ ^