Moving Window Differential Evolution Independent Component Analysis-Based Operational Modal Analysis for Slow Linear Time-Varying Structures

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Modal order</td><td class="align_center">50.025 s (Hz)</td><td class="align_center">1987.225 s (Hz)</td><td class="align_center">Change of transient frequency (%)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">1</td><td class="align_center">2.24</td><td class="align_center">2.31</td><td class="align_center">3.173</td></tr><tr><td class="align_left">2</td><td class="align_center">6.28</td><td class="align_center">7.27</td><td class="align_center">13.73</td></tr><tr><td class="align_left">3</td><td class="align_center">9.07</td><td class="align_center">12.30</td><td class="align_center">26.24</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The comparison of transient natural frequencies at moments 50.025 s and 1987.225 s.</div>

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Table 2

Table 2: Moving Window Differential Evolution Independent Component Analysis-Based Operational Modal Analysis for Slow Linear Time-Varying Structures 

Table 2 | Moving Window Differential Evolution Independent Component Analysis-Based Operational Modal Analysis for Slow Linear Time-Varying Structures 