Considering changing the subdivided driving way of stepping motor and improving characters of the system,a new kind of self-adaptive subdivided driving circuit(ASDC) based on AT89C51 was designed.

• 从改进步进电机的细分驱动方式、改善系统性能出发,设计了一种基于AT89C51的步进电机自适应细分驱动系统。