EPS系统中PMSM转子位置的测量方法

摘要

为获取EPS系统中永磁同步电机的转子位置，设计一种利用磁旋转编码器AS5045测量电机转子位置的方法，并通过对电机转子位置初始定位，实现了永磁同步电机转子位置的绝对角度测量。经实验证明，此方法设计简单，安装方便，获取的转子位置定位准确，测得角度实时性好，满足EPS系统对转子位置信息的要求。%A kind of method to measure the rotor position of permenent magnet synchronous motor in EPS system is designed by using magnetic rotary encoder AS5045. The system realize the measurement of rotor positon absolute angle after initial positon of rotor position. The experiment proves that the design is simple and easy to install , compared with other method, the output of this system is accurately and without delay, which is satisfied with the environment of entire EPS system.