中国机械工程2016，Vol.27Issue(18)：2472-2476,5.DOI:10.3969/j.issn.1004-132X.2016.18.010
采样频率对聚合经验模态分解的影响研究
Study on Effects of Sampling Frequency on Performance of EEMD
摘要
Abstract
This paper revised the definition of residual energy according to the characteristics of EEMD firstly,and then investigated the effects of sampling frequency on the EEMD by analyzing the misalignment errors, residual energy, successive and orthogonality of intrinsic mode functions (IMFs).The analysis results show that the value of misalignment errors decreases with the raise of sampling frequency while the other three parameters periodic change approximately.Based on this rule,a selection principle of sampling frequency was obtained.Simulation example shows that the sam-pling frequency must be controlled in the range of 10.3 to 11 times of the maximum of the signal frequencies.关键词
聚合经验模态分解/采样频率/能量泄漏/旋转机械Key words
ensemble empirical mode decomposition(EEMD)/sampling frequency/residual ener-gy/rotating machinery分类
自科综合引用本文复制引用
陈换过,陈培,陈文华,蔡丽,沈建洋,吴建伟,吴明建..采样频率对聚合经验模态分解的影响研究[J].中国机械工程,2016,27(18):2472-2476,5.基金项目
国家自然科学基金资助项目(51475432) （51475432）
浙江省国际科技合作专项计划资助项目(2013C24005) （2013C24005）
国家国际科技合作专项(2015DFA71400) （2015DFA71400）
