【摘要】 针对具有梯形反电势波形的无位置传感器无刷直流电机(BLDCM)的开环起动控制,提出一种基于AT 89 C2051芯片的软件实现方法.此种方法能有效的克服无位置传感器无刷直流电机在起动和低速运行时,由于反电势过小而带来的运行困难.并通过实验验证了这种方法的可行性.更多还原

【Abstract】 On the basis of AT89C2051 chip,a software method is put forward for the sensorless trapezoidal BEMF BLDCM in the open-loop start-up control.This method can effectively overcome the operation difficulties resulting from the small back EMF(electromotive force) when the non-starter and sensorless brushless DC motor runs at a low speed.The feasibility of this method is verified by an experiment.更多还原