Blade vibration study by spectral analysis of tip-timing signals with OMP algorithm
Mechanical Systems and Signal Processing(2019)
摘要
•To enforce the sparsity estimations of spectral components in order to reduce aliasing. The algorithm used is the Block-OMP.•To provide low computational time regarding other tip-timing methods.•To exploit the rotation speed variations to increase the observation windows lengths.•The structured sparsity model provides an accurate representation of the spectrum.
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关键词
Spectral analysis,Non uniform sampling,Blade vibration,Tip-timing,Sparse,Crack detection
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