A micro-controller based on 89c52 and lm629, lmd18200 is presented in the paper . with the help of the motion controller it not only simplifies the design of the hardware and the software of the control system but also enhances its reliability and performance . it is help to shorten responsive time, upgrade precision, and easy to realize automation and digital control 给出了以89c52为核心,辅以lm629、lmd18200等芯片构成的限束器运动控制子系统,不仅简化了子系统软硬件设计,提高了系统可靠性,减轻了设计工作量,而且提高了子系统性能,使得控制系统反应快,控制精度高,容易实现自动化、数字化控制。