摘要：对常规MRAS转速辨识进行了分析，针对异步电机无速度传感器矢量控制提出了一种改进型MRAS转速辨识方法。通过设计一个基于转子磁链定向电流模型下的补偿器，用于对磁链观测进行幅值和相位的实时补偿。仿真和实验表明，经过改进后的转速MRAS辨识方法具有较高的转子磁链观测精度，改善了转速估计的动静态性能，提高了系统的鲁棒性。

关键词：异步电机; 矢量控制; 模型参考自适应; 速度辨识
Abstract: By theoretical analysis on the common model reference adaptive speed identification system (CMRAS), a method of improved MRAS (IMRAS) was proposed for speed identification of a sensorless vector control system. In this strategy, a flux observer compensator was designed for compensating the flux amplitude and phase based on the current model in the rotor flux orientation. The simulation and experiments results showed that the IMRAS possessed the veracity of flux observers, improved the dynamic and static performance of the speed estimation and increased the robustness of system.

Key words: induction motor; vector control; model reference adaptive; speed identification