In addition, the work of single-phase-current drives corresponds with servo control can get parameters of PMSM such as back-EMF constant, inertia, friction constant, resistance, and inductance.

• 利用单相电流调节技术驱动马达配合上述的控制迴路可以获得马达的特性参数如反抗电动势常数、转动惯量、摩擦系数、电阻、电感。