摘  要：在详细介绍了电磁干扰理论知识的基础上，对无刷直流电动机控制系统的电磁兼容性软硬件设计进行了分析，电磁兼容性设计有利于提高无刷直流电动机控制系统的抗干扰能力，增强系统的可靠性和稳定性。
关键词：无刷直流电动机；电磁兼容；电磁干扰；数字信号处理器

Abstract: This paper expatiated the theory of brushless DC motor control system’s EMI,and analysed the EMC hardware and software design of brushless DC motor control system based on DSP.The EMC design made for improving anti-interference ability,increasing stability and reliability of brushless DC motor control system.
Key Words: BLDCM；EMC；EMI；DSP