摘  要：针对一种小功率无刷直流电动机（BLDCM），采用转速闭环控制方法，充分利用C8051F320单片机（MCU）的I/O及外设功能，实现了无数字逻辑器件换相的单片机的BLDCM的稳速控制，并对这种控制方法中出现的问题及解决方法进行了详细的分析。
关键词：单片机;BLDCM;稳速

Abstract: To aim at a small-power brushless DC motors(BLDCM),using speed closed-loop control method,this paper made full use of C8051F320 Microcontroller Unit(MCU)’s I/O pins and peripheral functions to achieve speed-stabilizing control of BLDCM without digital logic commutation devices based on MCU,and it gave a detailed analysis for the problems and solutions of this control method.
Key Words:MCU;BLDCM;Speed-stabilizing