实现HHT变换，首先将信号用EMD分解为一系列IMF分量，然后运用希尔伯特变换进行谱运算。可用于损伤识别。-HHT transform signal with EMD decomposed into a series of IMF component, and then use the Hilbert transform spectrum computing. Can be used for damage identification.

Hilbert-Huang变换是一种处理非线性，非平稳数据的方法，该方法由EEMD和Hilbert谱分析构成。-Hilbert-Huang Transform(HHT) is a novel general time frequency method for analysing nonlinear and non-stationary time series, which was developed by Norden E. Huang,1998,and made up of two parts

今天看了些EMD信号分解方面的东西，matlab官网上有个Hilbert-Huang Transform的代码，代码效率极高啊，人家3句语句就解决了一个大问题，很牛啊！还有一个GRilling的EMD工具箱，好多文件，功能应该相当强大。 这里研究了研究matlab官网的代码，加了些注释、功能演示，效果如下 原始信号由3个正弦信号加噪声组成，如下-Today looked at some of the EMD signal decomposition of things, matlab