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

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left"> </td><td class="align_center">Normalized amplitude of inner ring impact fault</td><td class="align_center">Normalized amplitude of outer ring impact fault</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Daubechies wavelet transform</td><td class="align_center">3.622</td><td class="align_center">2.931</td></tr><tr><td class="align_left">Morle wavelet transform</td><td class="align_center">3.692</td><td class="align_center">2.455</td></tr><tr><td class="align_left">Symlet wavelet transform</td><td class="align_center">3.979</td><td class="align_center">2.064</td></tr><tr><td class="align_left">Laplace wavelet and orthogonal matching pursuit</td><td class="align_center">4.364</td><td class="align_center">3.473</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Normalized amplitude of fault characteristic frequency.</div>

Shock and Vibration

tab4

Table 4

Table 4: Feature Extraction of Weak-Bearing Faults Based on Laplace Wavelet and Orthogonal Matching Pursuit 