Fault pattern recognition technique for roller bearing acoustic emission based on harmonic wavelet packet and BP neural network - 文章详情页

作者：

Zhao, Yuan-Xi (Zhao, Yuan-Xi.) | Xu, Yong-Gang (Xu, Yong-Gang.) | Gao, Li-Xin (Gao, Li-Xin.) | Cui, Ling-Li (Cui, Ling-Li.) (学者：崔玲丽)

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摘要：

The　energy　distribution　of　each　frequency　sub-band　of　acoustic　emission(AE)　signal　after　decomposition　is　related　to　the　type　of　roller　bearing　defects,　AE　signals　measured　from　a　roller　bearing　test　rig　were　decomposed　into　a　number　of　frequency　sub-bands　by　using　harmonic　wavelet　packet,　and　energy　features　associated　with　each　sub-band　were　selected.　The　energy　features　were　then　used　as　inputs　to　a　back-propagation　neural　network　classifiers　for　identifying　the　bearing＇s　fault.　In　the　bearing　fault　recognition,　harmonic　wavelet　packet　was　compared　with　Daubechies　wavelet　packet.　The　experimental　results　indicated　that　the　proposed　fault　diagnosis　method　is　effective　and　can　be　used　for　roller　bearing　fault　recognition.

关键词：

Acoustic emissions Acoustic emission testing Backpropagation Discrete wavelet transforms Harmonic analysis Neural networks Packet networks Pattern recognition Roller bearings Rollers (machine components) Wavelet analysis Wavelet decomposition

作者机构：

[ 1 ] [Zhao, Yuan-Xi]Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Xu, Yong-Gang]Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Gao, Li-Xin]Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Cui, Ling-Li]Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing 100124, China

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