中国机械工程Issue(18)：2467-2472,6.DOI:10.3969/j.issn.1004-132X.2014.18.010
基于伪极值点假设的经验模态分解及其在转子故障诊断中的应用
Pseudo-extrema-based EMD and Its Application to Rotor Fault Diagnosis
摘要
Abstract
A novel method PEEMD was proposed for restraining the mode mixing problem of EMD .Compared with ensemble EMD(EEMD) ,which was by adding white noise before ensemble and averaging ,PEEMD fulfilled this aim by defining the least extrema scale(LES) to measure other extre-ma scales and by adding pseudo-extrema to homogenize the scale distribution .EMD and PEEMD are introduced herein firstly and then PEEMD was compared with EMD and EEMD by analyzing simula-tion signals .Also ,PEEMD was applied to diagnose rotor rubbing faults ,and the results indicate that PEEMD is more accurate in components and more efficient in inhibition of mode mixing than that of EM D and EEM D .关键词
经验模态分解/伪极值点/模态混淆/故障诊断/转子碰摩Key words
empirical mode decomposition(EMD)/pseudo-extrema-based(PE)/mode mixing/fault diagnosis/rotor rubbing分类
机械制造引用本文复制引用
郑近德,程军圣,曾鸣,罗颂荣..基于伪极值点假设的经验模态分解及其在转子故障诊断中的应用[J].中国机械工程,2014,(18):2467-2472,6.基金项目
国家自然科学基金资助项目（51075131）；湖南省自然科学基金资助项目 （）
