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《Journal of Liaoning Technical University(Natural Science)》 2012-01
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Application of harmonic wavelet in rotating machinery fault diagnosis

LI Yanyan1,HUA Chenhui2(1.Department of Civil & Materials Engineering,Henan University of Urban Construction,Pingdingshan 467036,China;2.Department of Electronic Information Engineering,Chengdu College,University of Electronic Science And Technology of China,Chengdu 611731,China)  
In order to identify the shaft orbit of rotating machinery with a non stationary signal,a filter purification method based on harmonic wavelet is developed.Harmonic wavelet has clear function expressions and simple algorithms.In addition,it owns a good box shape spectrum characteristic,and can decompose signal into independent space in a neither overlapping nor missing manner,which is convenient for extracting signal features.Harmonic wavelet filter purification can separate fault information from the original signals of shaft orbit.Therefore,the shape of the shaft orbit can be obtained,which provides the basis for fault diagnosis on rotating machinery.The simulation experiments show that the filter purification method is simple,and has a practical value.
【Fund】: 河南省科技攻关基金资助项目(092102310233)
【CateGory Index】: TH165.3
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