| 基于EMD,EEMD与CEEMD的信号 时频分析技术对比研究 |
| |
| 引用本文： | 司友强,呙润华,施鹏程.基于EMD,EEMD与CEEMD的信号 时频分析技术对比研究[J].CT理论与应用研究,2019,28(4):417-426. |
| |
| 作者姓名： | 司友强 呙润华 施鹏程 |
| |
| 作者单位： | 新疆大学建筑工程学院,乌鲁木齐,830046;清华大学土木工程系,北京,100084 |
| |
| 基金项目： | 国家自然科学基金-地区科学基金:复杂交通基础设施系统进化理论与级联管理方法研究（E080703）。 |
| |
| 摘 要： | 时频分析方法在各个领域中广泛应用起来，特别是在工程领域中对结构和构件的变形以及内部损伤检测应用较多。HHT作为一种新兴的非线性，非平稳时频分析技术在探测和勘探领域中具有广阔的前景。文中重点对EMD，EEMD和CEEMD算法进行分析，通过对合成信号进行傅里叶变换和希尔伯特-黄变换，得到信号的频谱图，希尔伯特黄谱，边际谱等数据。通过对比分析，总结了三种方法的优缺点。结果表明，EMD，EEMD和CEEMD方法是进行非线性非平稳信号分析的有效工具。
|
| 关 键 词： | 时频分析 经验模态分解和集合经验模态分解 CEEMD 希尔伯特-黄变换 |
| 收稿时间： | 2019-04-15 |
Comparative Study of Signal Time-Frequency Analysis Techniques Based on EMD,EEMD and CEEMD |
| |
| Institution: | 1. School of Architecture and Engineering, Xinjiang University, Urumqi 830046, China;2. Department of Civil Engineering, Tsinghua University, Beijing 100084, China; |
| |
| Abstract: | The time-frequency analysis method is widely used in various fields, especially in the field of engineering, and it is applied to the deformation of structures and components and internal damage detection.As an emerging nonlinear, HHT non-stationary time-frequency analysis technology has broad prospects in the field of detection and exploration.In this paper, the EMD, EEMD and CEEMD algorithms are analyzed.The Fourier transform and Hilbert-Huang transform of the synthesized signal are used to obtain the spectrum of the signal, Hilbert's yellow spectrum and marginal spectrum.Through comparative analysis, the advantages and disadvantages of the three methods are summarized.The results show that the EMD, EEMD and CEEMD methods are effective tools for nonlinear non-stationary signal analysis. |
| |
| Keywords: | |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《CT理论与应用研究》浏览原始摘要信息 |
| 点击此处可从《CT理论与应用研究》下载免费的PDF全文 |
|
