Application of Variational Mode Decomposition and Multiscale Permutation Entropy in Rolling Bearing Failure Analysis

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left"> </td><td class="align_center" colspan="4">Center frequency (Hz)</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">Normal condition</td><td class="align_center">108</td><td class="align_center">1046</td><td class="align_center">2101</td><td class="align_center">4884</td></tr><tr><td class="align_left">Inner ring fault</td><td class="align_center">608</td><td class="align_center">1385</td><td class="align_center">2757</td><td class="align_center">3560</td></tr><tr><td class="align_left">Roller fault</td><td class="align_center">577</td><td class="align_center">1053</td><td class="align_center">2921</td><td class="align_center">3373</td></tr><tr><td class="align_left">Outer ring fault</td><td class="align_center">756</td><td class="align_center">2830</td><td class="align_center">3370</td><td class="align_center">3614</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Comparison of different thresholds (<i>K</i> = 4).</div>

Shock and Vibration

tab3

Table 3

Table 3: Application of Variational Mode Decomposition and Multiscale Permutation Entropy in Rolling Bearing Failure Analysis 