arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1908.11305eess.SPstat.ME
收藏

经验模态分解方法的检验

Inspection of methods of empirical mode decomposition

Roberto Hernández Santander, Esperanza Camargo Casallas

摘要:

经验模态分解是一种自适应的局部化工具,它可以提取非线性、非平稳过程的基本分析成分,是希尔伯特黄变换的基础,但存在干扰模态或保证分解正交性等问题。三种变体的算法进行了评估,不同的实验参数和一组10个时间序列从表面肌电图。实验结果表明,利用过程中得到的解析信号进行重构时获得较低的误差并不是保证分解目的实现的有效特征(物理意义和模式间无干扰),另外,分解的迭代过程中必须产生自由度,使其具有一致性且不产生有偏信息。该项目是在弗朗西斯科·何塞·德·卡尔达斯大学DIGITI研究小组的框架内开发的。

英文摘要:

Empirical Mode Decomposition is an adaptive and local tool that extracts underlying analytical components of a non-linear and non-stationary process, in turn, is the basis of Hilbert Huang transform, however, there are problems such as interfering modes or ensuring the orthogonality of decomposition. Three variants of the algorithm are evaluated, with different experimental parameters and on a set of 10 time series obtained from surface electromyography. Experimental results show that obtaining low error in reconstruction with the analytical signals obtained from a process is not a valid characteristic to ensure that the purpose of decomposition has been fulfilled (physical significance and no interference between modes), in addition, freedom must be generated in the iterative processes of decomposition so that it has consistency and does not generate biased information. This project was developed within the framework of the research group DIGITI of the Universidad Distrital Francisco José de Caldas.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑