说明：  电机模型可以根据电机的输入值，包括输入电压、输入信号，输出值包括转矩、转速，通过联合仿真，可以更好的判断电机控制策略的好坏。
(The motor model can be based on the input value of the motor, including the input voltage and input signal, and the output value includes torque and speed. Through joint simulation, the motor control strategy can be better judged.)