A Novel Shearer Cutting State Recognition Method Based on Improved Variational Mode Decomposition and LSSVM with Acoustic Signals

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Cutting state</td><td class="align_center">Coal-rock specimen</td><td class="align_center">Class label</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left"><i>F</i><sub>1</sub></td><td class="align_center">None</td><td class="align_center">1</td></tr><tr><td class="align_left"><i>F</i><sub>2</sub></td><td class="align_center">Coal seam with hardness <i>f</i> = 2</td><td class="align_center">2</td></tr><tr><td class="align_left"><i>F</i><sub>3</sub></td><td class="align_center">Coal seam with hardness <i>f</i> = 3</td><td class="align_center">3</td></tr><tr><td class="align_left"><i>F</i><sub>4</sub></td><td class="align_center">Coal seam with gangue</td><td class="align_center">4</td></tr><tr><td class="align_left"><i>F</i><sub>5</sub></td><td class="align_center">Rock</td><td class="align_center">5</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The class labels of five cutting states.</div>

Shock and Vibration

tab2

Table 2

Table 2: A Novel Shearer Cutting State Recognition Method Based on Improved Variational Mode Decomposition and LSSVM with Acoustic Signals 