中文摘要：

针对永磁同步电机宽速度范围的运行需求,提出一种变滑模增益参考自适应（ MRAS ）无位置控制技术. 采用模糊控制器对PI参数的调整作用,可在电机高、中低速时都有良好的动稳态性能,抑制了角度的低速振荡并减小了高速延迟,提高了高速永磁同步电机宽速度域内的转子位置检测精确度. 与传统PI模型参考自适应观测器相比,此方法更适合转速高、调速范围宽、反电动势系数小的高速永磁同步电机转子位置检测.

英文摘要：

In order to meet the needs of wide region operation for permanent magnet synchronous motors （ PMSMs） ,a variable gain sliding-mode model reference adaptive system （ MRAS） sensor-less controller was proposed. Making use of fuzzy controller to adjust the parameters of PI regulator, good steady state and dynamic performance was achieved in high, middle and low speed region, and the low-speed angle oscillation in low speed region was attenuated,the speed delay was reduced,and the rotor position detec-tion precision of the high-speed permanent magnet synchronous motor in wide speed region was increased. Compared with the traditional PI model reference adaptive observer, this method is more suitable for high speed, wide speed range, and small back-EMF coefficient permanent magnet synchronous motor rotor po-sition detection.