A Novel Fault Diagnosis Model for Bearing of Railway Vehicles Using Vibration Signals Based on Symmetric Alpha-Stable Distribution Feature Extraction

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">Fault ID</td><td class="align_center">IMF1</td><td class="align_center">IMF2</td><td class="align_center">IMF3</td><td class="align_center">IMF4</td><td class="align_center">IMF5</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">F1</td><td class="align_center">2</td><td class="align_center">1.9838</td><td class="align_center">1.1757</td><td class="align_center">2</td><td class="align_center">1.9888</td></tr><tr><td class="align_left">F2</td><td class="align_center">1.9946</td><td class="align_center">0.9609</td><td class="align_center">0.7953</td><td class="align_center">2</td><td class="align_center">1.9187</td></tr><tr><td class="align_left">F3</td><td class="align_center">2</td><td class="align_center">1.3545</td><td class="align_center">1.1618</td><td class="align_center">2</td><td class="align_center">1.9781</td></tr><tr><td class="align_left">F4</td><td class="align_center">2</td><td class="align_center">1.5353</td><td class="align_center">1.0183</td><td class="align_center">2</td><td class="align_center">2</td></tr><tr><td class="align_left">F5</td><td class="align_center">2</td><td class="align_center">1.9849</td><td class="align_center">1.8908</td><td class="align_center">2</td><td class="align_center">1.9614</td></tr><tr><td class="align_left">F6</td><td class="align_center">2</td><td class="align_center">1.9612</td><td class="align_center">1.2997</td><td class="align_center">1.8759</td><td class="align_center">2</td></tr><tr><td class="align_left">F7</td><td class="align_center">2</td><td class="align_center">1.9279</td><td class="align_center">1.1409</td><td class="align_center">1.9920</td><td class="align_center">2</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Characteristic exponent <i>α</i> values of IMFs (c1–c5).

Shock and Vibration

tab3

Table 3

Table 3: A Novel Fault Diagnosis Model for Bearing of Railway Vehicles Using Vibration Signals Based on Symmetric Alpha-Stable Distribution Feature Extraction 

Table 3 | A Novel Fault Diagnosis Model for Bearing of Railway Vehicles Using Vibration Signals Based on Symmetric Alpha-Stable Distribution Feature Extraction 