Analysis and Optimization of Low-Speed Road Noise in Electric Vehicles

<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">Formation</td><td class="align_center">Frequency before optimization</td><td class="align_center">Frequency after optimization</td><td class="align_center">Difference</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">First-order bending</td><td class="align_center">25.7 Hz</td><td class="align_center">25.0 Hz</td><td class="align_center">0.7 Hz</td></tr><tr><td class="align_left">First-order twist</td><td class="align_center">43.1 Hz</td><td class="align_center">37.2 Hz</td><td class="align_center">5.9 Hz</td></tr><tr><td class="align_left">Second-order bending</td><td class="align_center">58.7 Hz</td><td class="align_center">52.2 Hz</td><td class="align_center">6.5 Hz</td></tr><tr><td class="align_left">Second-order twist</td><td class="align_center">63.0 Hz</td><td class="align_center">56.2 Hz</td><td class="align_center">6.8 Hz</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Frequency comparison before and after optimization of the backup door.</div>

Wireless Communications and Mobile Computing

tab2

Table 2

Table 2: Analysis and Optimization of Low-Speed Road Noise in Electric Vehicles 