Shock and Vibration / 2020 / Article / Fig 22

Research Article

A Feature Extraction Method of Wheelset-Bearing Fault Based on Wavelet Sparse Representation with Adaptive Local Iterative Filtering

Figure 22

Results obtained by EWT: (a) detected boundaries of Fourier spectrum, (b) the 17th subband signal, and (c) Hilbert envelope spectrum of signal in (b).
(a)
(b)
(c)

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