emd

代码说明：

  基于emd技术的非线性信号分解，把信号分解为有限个分量。然后对其非线性因素进行分析，是解决非线性系统的一大好处，hht(Emd technologies based on nonlinear signal decomposition, the signal is decomposed into a finite number of components. Then analyze its nonlinear factors, is to solve the nonlinear system is a big advantage, hht)