基于八分圆牛顿-拉夫逊法与降阶扩展卡尔曼滤波的永磁同步电机无传感器控制

For back electromotive force-based sensorless control in permanent magnet synchronous motor (PMSM) drives, the conventional phase-locked loop (PLL) exhibits a $\pm \pi$ position estimation error during speed reversal. This article presents an octant Newton–Raphson method (ONRM)-based PLL, which employs a newly defined objective function and a position octant method. It not only ensures the positio...