摘  要：文章首先探讨了直流无刷电机的二二控制的一般方法，然后在此基础上提出了新型的二一PWM控制法。通过开通直流无刷电机中六个状态中的一个状态来说明电机的电流如何在三相桥中形成回路；随后通过数学模型分析两种控制方法的电流数学表达式；最后给出实验结果，给出新型二一控制方法的可行性及优势。
关键词：直流无刷电机；二二控制；二一控制

Abstract: This paper discussed the general method with two-two control method to control brushless DC motor,then put forward a new type of control method with two-one PWM control method on this basis.Explained the current of motor how to flow in the three-phase bridge with opening the one of six states which control brushless DC motor;then analysed current mathematical equation between the two different control methods with each mathematical model.The experimental results show the feasibility and advantages in the new method.
Key Words: BLDCM;Two-two control;Two-one control