无刷直流电动机工作原理及其优化控制

Principal of Brushless DC Motor and Its Optimized Control Method

无刷直流电动机是利用电子换相替代机械换相和电刷,其既具有直流电动机良好的调速性能,又具有交流电动机结构简单、运行可靠和维护方便等优点,在众多领域中得到了广泛的应用。通过分析无刷直流电动机的结构、工作原理及其特点,研究得出无刷直流电动机的控制策略与控制方法,设计出了无刷直流电动机的软件控制算法。

Brushless DC motors do not use brushes for commutation;instead,they are electronically commutated.Due to this,BLDC motor not only has the same speed regulating performance as DC motor,but also it is very stable and reliable in operation.With development of BLDC motor,it is widely used in various areas.This article first introduces the structure and composition of BLDC motor so as to conclude its principal and operation characteristics.With the above theoretical basis,the systematic BLDC motor control strategy and control method is formed.Last,a detailed software algorithm is discussed and finalized.