鐵道罐車縱向沖擊實驗數據分析研究
發(fā)布時間:2018-11-13 17:56
【摘要】:考慮鐵道罐車以及罐內裝載的物體作為一個復雜系統(tǒng),在運行時輪軌與軌道的相互作用下,研究車輛的安全問題,特別是罐車縱向加速度引起的問題顯得相當復雜。為了分析罐車出現問題時的縱向加速度特性及故障原因,對正常信號和含故障的縱向加速度信號求互譜密度函數,找出共有縱向沖擊頻率,將該頻率從含故障信號中濾除,反復數次,削弱故障信號中的正常運行的主要成分,最后通過加速度功率譜密度將縱向故障沖擊頻率從故障信號提取出來。
[Abstract]:Considering the railway tank car and the object loaded in the tank as a complex system, under the interaction of wheel / rail and track, it is very complicated to study the safety problem of the vehicle, especially the problem caused by the longitudinal acceleration of the tank car. In order to analyze the longitudinal acceleration characteristics and fault causes of tank truck, the cross-spectral density function is obtained for the normal signal and the longitudinal acceleration signal with fault, the common longitudinal impulse frequency is found out, and the frequency is filtered out from the fault signal. The main components of normal operation of the fault signal are weakened several times, and the longitudinal fault impulse frequency is extracted from the fault signal by the acceleration power spectrum density.
【作者單位】: 重慶交通大學信息科學與工程學院;同濟大學鐵道與城市軌道交通研究院;
【基金】:國家自然科學基金(No.61174214) 科技部重大儀器專項項目(No.2012YQ15021307)
【分類號】:U272.4
本文編號:2329939
[Abstract]:Considering the railway tank car and the object loaded in the tank as a complex system, under the interaction of wheel / rail and track, it is very complicated to study the safety problem of the vehicle, especially the problem caused by the longitudinal acceleration of the tank car. In order to analyze the longitudinal acceleration characteristics and fault causes of tank truck, the cross-spectral density function is obtained for the normal signal and the longitudinal acceleration signal with fault, the common longitudinal impulse frequency is found out, and the frequency is filtered out from the fault signal. The main components of normal operation of the fault signal are weakened several times, and the longitudinal fault impulse frequency is extracted from the fault signal by the acceleration power spectrum density.
【作者單位】: 重慶交通大學信息科學與工程學院;同濟大學鐵道與城市軌道交通研究院;
【基金】:國家自然科學基金(No.61174214) 科技部重大儀器專項項目(No.2012YQ15021307)
【分類號】:U272.4
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