Contactless Modal Phenomena Based Approach to Detecting, Identifying, and Diagnosing of Electrical Connections

<table class="fixed-width table-group" id="tab9"><tr><td><table class="table"><colgroup><col style="width:7.77em"/><col style="width:5.66em"/><col style="width:8.12em"/><col style="width:12.24em"/></colgroup><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Case</td><td class="align_center" colspan="2"> First resonance frequency, MHz</td><td class="align_left" rowspan="2"><span style="width: 142.726ptpx;"><svg height="14.5316pt" id="M171" style="vertical-align:-3.9384pt" version="1.1" viewbox="-0.0498162 -10.5932 142.726 14.5316" width="142.726pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,2.33939e-05)"><path d="M332 -241C217 -138 149 60 149 271C149 483 216 680 332 783L312 808C148 686 74 491 74 272V271C74 50 148 -146 312 -266L332 -241Z" id="g119-5"></path></g><g transform="matrix(.013,0,0,-0.013,5.024,0)"><path d="M619 670C619 686 593 712 555 712S459 686 410 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302 194 302C133 302 122 403 122 454S133 605 193 605ZM567 351C465 351 421 250 421 169C421 90 465 -12 566 -12S710 90 710 170S667 351 567 351ZM566 322C628 322 637 221 637 169C637 121 628 18 567 18S494 119 494 170C494 223 506 322 566 322Z" id="g121-35"></path></g></svg></span></td></tr><tr class="thead"><td class="align_center">Simulation</td><td class="align_center">Experiment</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Without a break</td><td class="align_center">96.7</td><td class="align_center">83</td><td class="align_center">±7.6%</td></tr><tr><td class="align_left">With a break</td><td class="align_center">135</td><td class="align_center">127</td><td class="align_center">±3.05%</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Calculated and measured values of the first resonance frequency spectrum of the signal.</div>

Complexity

tab9

Table 9

Table 9: Contactless Modal Phenomena Based Approach to Detecting, Identifying, and Diagnosing of Electrical Connections 