基于改进型MRAS的永磁同步电机无位置传感器控制方法研究

为提高电传动装甲车辆的运行稳定性，提出将模型参考自适应（MRAS）用于永磁同步轮毂电机无位置传感器控制，同时考虑到传统MRAS法的辨识精度易受电机参数变化的影响，提出一种能够对定子电阻进行实时辨识的改进方法。基于改进型MRAS法，构建了轮毂电机无位置传感器控制系统，基于Matlab/Simulink仿真对比了加入电阻辨识环节前后转速及转子位置的辨识效果，仿真结果验证了改进设计的优越性能，有效提高了电阻动态变化过程中转速及转子位置的辨识精度，避免了因参数变化引起的误差过大问题。

Research on Position Sensorless Control Method of Permanent Magnet Synchronous Motor Based on Improved MRAS

In order to improve the operational stability of armored vehicles with electric transmission, model reference adaptive is proposed for position sensorless control of permanent magnet synchronous wheel hub motors. Considering that the identification accuracy of the traditional MRAS method is susceptible to changes in motor parameters, an improved method for real-time identification of stator resistance is proposed. Based on the improved MRAS method, a position sensorless control system for in-wheel motors was constructed. Based on Matlab / Simulink simulation, the identification effect of the speed and rotor position before and after adding the resistance identification link is compared. The simulation results verify the superior performance of the improved design, effectively improve the identification accuracy of the speed and rotor position during the dynamic change of resistance, and avoid the problem of excessive errors caused by parameter changes.