Multistep Degradation Tendency Prediction for Aircraft Engines Based on CEEMDAN Permutation Entropy and Improved Grey–Markov Model

<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">RIMFs</td><td class="align_center">IMFs contained</td><td class="align_center">Interval of PE</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">RIMF1</td><td class="align_center">IMF1</td><td class="align_center">[0.696, 0.895]</td></tr><tr><td class="align_left">RIMF2</td><td class="align_center">IMF2, IMF3</td><td class="align_center">[0.488, 0.687]</td></tr><tr><td class="align_left">RIMF3</td><td class="align_center">IMF4, IMF5</td><td class="align_center">[0.189, 0.388]</td></tr><tr><td class="align_left">RIMF4</td><td class="align_center">IMF6, IMF7, IMF8, <i>r</i><sub>0</sub></td><td class="align_center">[0, 0.188]</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Analysis of the reconstruction of IMFs.</div>

Complexity

tab4

Table 4

Table 4: Multistep Degradation Tendency Prediction for Aircraft Engines Based on CEEMDAN Permutation Entropy and Improved Grey–Markov Model 