One solution is to add a rotor position sensor to the synchromotor. 解决这一问题普遍的做法是加装电机转子位置传感器。
The paper describes the error analysis for this accuracy angular position transducer and the method for eliminating the error. 文中对这种高精度角位置传感器产生误差原因进行了分析，并给出了有效消除误差的方法。
