基于两相正交型开关霍尔转子位置预估方法

Research on Rotor Position Estimation Scheme Based on Two Phase Orthogonal Hall Effect Position Sensors

为了拓展永磁同步电机在低成本电力拖动系统中的应用,在分析霍尔估算原理的基础上,利用两相正交型开关霍尔传感器对永磁同步电机转子位置估算方法进行了研究,并对霍尔位置估算方案的原理误差和霍尔安装引起的固有误差进行了分析。最后在STM32微控制器上完成了转子位置估算的软件设计,实现了永磁同步电机的闭环控制。实验结果表明采用两相正交型开关霍尔进行转子位置检测,能得到较好的位置准确度,性价比高,可以应用于对成本要求苛刻的永磁同步电机控制场合。

In order to expand applications of permanent magnet synchronous motors （PMSM） in low cost electric drive systems, based on the analysis of hall position estimation principle, a design scheme for rotor position estimation of PMSM using two orthogonal locked hall effect position sensors is presented. The principle errors and the fixed errors caused by hardware installation are analyzed in this paper. Finally, the rotor position detection software design and the closed loop control of PMSM are realized on a STM32 micro controller. All experimental results show that two phase orthogonal hall position sensors for rotor position detection can obtain better position accuracy, has high performance price ratio, and can be applied in the motor control on the occasions of cost demanding.