摘  要：为了实现无刷直流电机调速系统的精确控制性能，应用XC167CI MCU建立了全数字双闭环控制系统。介绍了调速系统的硬件结构及软件设计流程。经实验检验，控制结构清晰，系统响应速度快，稳定性好，有实际工程应用价值。
关键词：无刷直流电机；数控系统；硬件设计；软件设计；实验

Abstract: To realize the precise control of the brushless DC motor,this paper proposed a digital control system of brushless DC motor with two-closed-loop using XC167CI MCU.The method of hardware electric circuit design and software programming were presented in detail.The result of experiment showed that the control system had clear structure,fast response ability and good stability performance.
Key Words: Brushless DC motor；NC system;Hardware design;Software design;Experiment