In this paper,a model of estimating the rotor s position and velocity is proposed and used to detect back-EMF of non-conducted phase of BLDCM through Extended Kalman Filter.

• 从介绍扩展卡尔曼滤波算法原理入手,建立了以不导通相反电势为基础的无位置传感器无刷直流电机的状态观测模型,估算出电机转子位置和速度,最后对模型进行了仿真并给出了仿真结果。