消除无刷直流电机控制系统中换相死区的方法研究

Study of a method for eliminating the commutation dead band in the control system of BLDC motors

介绍了DSP芯片的PWM生成方式 ,详细分析了PWM脉冲切换方式对无刷直流电机控制系统中换相控制的影响 ,并提出了强迫输出方式下的三状态式消除换相死区的算法 。

The generating modes of PWM pulse in one type of DSP chip die are presented,and its influence to the commutation control in the control system of BLDC motors is discussed,then a method to eliminate the Commutation Dead Band (CDB) is proposed.The experimental results prove the validity and practicability of this method.