Fault diagnosis of reciprocating compressor cylinder based on EMD coherence method

被引：0
|
作者：
王雷 [1 ]
赵俊龙 [1 ]
王奉涛 [1 ]
马孝江 [1 ]
机构：
[1] Institute of Vibration Engineering,Department of Mechanical Engineering,Dalian University of Technology
来源：
Journal of Harbin Institute of Technology(New series) | 2012年 / 01期
基金：
中国国家自然科学基金;
关键词：
reciprocating compressor; cylinder; EMD; coherence; time delay estimation;
D O I：
暂无
中图分类号：
TH45 [压缩机、压气机];
学科分类号：
080704 ;
摘要：
Since there always exist interference components which caused by valve vibration,it is hard to directly use cylinder signal for fault diagnosis of reciprocating compressor. Based on Empirical Mode Decomposition (EMD) coherence,a new method for the fault diagnosis of reciprocating compressor cylinder is presented. Firstly,double channel signals of cylinder and valve are synchronously sampled. Secondly,cyclic cross-correlation function is used to eliminate the time delay between these signals. Finally,EMD coherence method is utilized to remove the interference components from cylinder signal. Thus,more concise and precise working condition information for cylinder and inner components can be obtained. So it is an effective method for fault diagnosis of reciprocating compressor cylinder.
引用
收藏
页码：101 / 106
页数：6
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