Quaternion empirical wavelet transform and its applications in rolling bearing fault diagnosis

Kun Zhang,Yunjie Deng,Peng Chen,Chaoyong Ma,Yonggang Xu

Measurement（2022）

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摘要

•Quaternion empirical wavelet transform (QEWT) is proposed to process multi-channel signals.•The minimum values of the spectrum trend are used to divide the boundaries.•Meyer wavelets are used to construct filters and reconstruct signals.•QEWT can process multi-channel signals from different positions or multi-dimensional sensors.

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关键词

Quaternion empirical wavelet transform,Multi-channel signal,Feature identification,Rolling bearing,Fault diagnosis

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