Feature Extraction of Weak-Bearing Faults Based on Laplace Wavelet and Orthogonal Matching Pursuit

<div>The results of sparse representation of the vibration signal of the weak fault of the bearing inner ring. (a) The optimal Laplace wavelet atom. (b) Sparse representation coefficients. (c) The reconstructed signal.</div>

Shock and Vibration

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Figure 9

Figure 9: Feature Extraction of Weak-Bearing Faults Based on Laplace Wavelet and Orthogonal Matching Pursuit 