中文摘要：

针对PMSM的数学模型和最优转矩矢量控制方案，提出一种基于MARS的速度辨识方案。将PMSM的电流模型作为参考模型，估算的定子磁链模型作为可调模型，设计了自适应律对转速进行辨识。同时，提出了一种在同步旋转坐标系下的滑模变结构速度调节策略，两者相结合应用于PMSM最优转矩矢量控制系统中。仿真结果表明，所提出的速度调节策略和辨识方案使最优转矩矢量控制系统具有较强的鲁棒性和较好的动静态性能。

英文摘要：

On the basis of analyzing the mathematical model and optimal torque vector control principle of permanent magnet synchronous motor （ PMSM ） , a method of estimating the rotor speed based on model reference adaptive system （MRAS） for PMSM was presented. In this method, current model of PMSM was regarded as reference model while esti- mated stator flux model was considered as adjustable model. The adaptive laws were designed so that rotor speed was esti- mated at the same time. A sliding mode speed control strategy was proposed in synchronous rotating coordinate. They were used in optimal torque vector control system. Simulation and experimental results showed that the proposed strategy had strong robustness and satisfactory performance.