Analysis and Control of Abnormal Vibration of End Wall on High-Speed Electric Multiple Units

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Parameter</td><td class="align_center">Value</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Sensor model</td><td class="align_center">4189-A-021</td></tr><tr><td class="align_left">Measuring range (dBA)</td><td class="align_center">16∼134</td></tr><tr><td class="align_left">Output impedance (Ω)</td><td class="align_center">&lt;50</td></tr><tr><td class="align_left">Frequency response (Hz)</td><td class="align_center">1∼20000</td></tr><tr><td class="align_left">Sensitivity (mv·Pa<sup>−1</sup>)</td><td class="align_center">40</td></tr><tr><td class="align_left">Sound field type</td><td class="align_center">Free field</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Main technical parameters of the microphone.</div>

Journal of Control Science and Engineering

tab1

Table 1

Table 1: Analysis and Control of Abnormal Vibration of End Wall on High-Speed Electric Multiple Units 