经验模态分解依据信号时间尺度将信号逐级分解成对称的分量，在进一步对模态函数进行希尔伯特变换(Empirical mode decomposition (EMD) decomposes the signal into symmetrical components step by step according to the signal time scale, and further performs the Hilbert transform for modal functions.)

电机仿真实例，提供了一些电机的仿真实例。可以自己学习一下(The example of motor simulation provides some examples of motor simulation. You can learn by yourself)