说明：  参照文献搭建了永磁同步电机直接转矩控制模型； 适合做毕业设计时参考，也非常适合新手学习； 可在该模型的基础上，根据自己的研究需要添加卡尔曼滤波、预测控制、占空比直接转矩等。
(The direct torque control model of permanent magnet synchronous motor (PMSM) is built according to the literature; Suitable for graduation design reference, also very suitable for novice learning; On the basis of this model, Kalman filter, predictive control, duty cycle and direct torque can be added according to our own research needs)