The method of finite state machine together with PWM circuit is given to realize the algorithms of Voltage Space Vector control and 120 electrical Angle changing phase control of DC brushless motor.
针对电机空间矢量控制和直流无刷电机120电角度换相控制算法的电路实现，采用了控制状态机与PWM发生电路相结合的方法。
And the methods of solving the burning problems caused by breaking phase are provided, which is only changing one circuit.
分析了井下局扇风机烧毁的原因，提出了仅改动一根线，即可解决井下局扇风机因断相而烧损问题的方法。
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