Improved EEMD and overlapping group sparse second-order total variation
Feige Zhang,
Shesheng Gao,
Wenjuan Zhang
et al.
Abstract:Strong background noise increases the difficulty in extracting the early fault features of rolling bearing and leads to the signal waveform distortion problem of the total variation denoising method (TVD). Therefore, this paper presents an ensemble analysis method of fault features that combines improved ensemble empirical mode decomposition (MEEMD) with overlapping group sparse second-order total variation (OGSSTV). Based on typical vibration signals with background noise, the effects of mode mixing, reconstr… Show more
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