模型参考自适应(MRAS)方法一般采用电压模型来进行磁链估计，但电压模式的纯积分环节的直流分量一直困扰着MRAS方法在低速时的控制性能。对电压模型进行了改进，把输入改为磁链，输出改为电压，然后把计算的电压与测量电压进行比较从而校正转速，彻底解决了电压模型的积分问题。利用Simulink搭建仿真模型分别在高、低速进行转速仿真实验，证明了该模型的观测转速效果好。%The model reference adaptive control (MRAS) method is a common method adopting voltage model to carry out flux linkage esti-mation, but the direct current component of pure integration element in voltage mode always troubles the control performance of MRAS method at low speed. The voltage model was improved, the input was flux linkage and the output was the voltage, then the calculative voltage was com-pared with the measuring voltage to adjust the rotate speed, completely solving the integral problem of voltage model. Simulink was used to con-struct the simulation model to carry out simulated experiments at high and low rotate speed, which proves that this model has good effectiveness to observe rotate speed.
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