High-Speed Train Emergency Brake Modeling and Online Identification of Time-Varying Parameters

<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">Braking parameter</td><td class="align_center">Value</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Total weight of train (t)</td><td class="align_center">536</td></tr><tr><td class="align_left">Maximum operating speed (km/h)</td><td class="align_center">350</td></tr><tr><td class="align_left">Continuous operating speed (km/h)</td><td class="align_center">300</td></tr><tr><td class="align_left">Brake cylinder diameter (mm)</td><td class="align_center">203</td></tr><tr><td class="align_left">Air pressure of brake cylinder (kPa)</td><td class="align_center">410</td></tr><tr><td class="align_left">Transmission efficiency</td><td class="align_center">0.85</td></tr><tr><td class="align_left">Braking ratio</td><td class="align_center">2.55</td></tr><tr><td class="align_left">Friction coefficient</td><td class="align_center">0.28</td></tr><tr><td class="align_left">Brake disc friction radius (mm)</td><td class="align_center">297.6</td></tr><tr><td class="align_left">Wheel rolling radius (mm)</td><td class="align_center">460</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Main braking parameters of CRH3.</div>

Mathematical Problems in Engineering

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Table 1

Table 1: High-Speed Train Emergency Brake Modeling and Online Identification of Time-Varying Parameters 