Track Irregularities Estimation Based on the Vibration of Car-body
Track irregularities have a significant effect on ride quality and traffic safety.The inspection of track irregularity mainly relies on special track inspection car which has a high cost and long inspection period in China.In this paper,a simple method,which can be used on the ordinary train as a good complement to track inspection car,is proposed to on-line estimate the track status.Track quality index(TQI),which is an important evaluation index of line inspection in Chinese railway system,can be estimated by analyzing the vibration of car-body.Some features,including four from time-domain and eight from frequency-domain,are extracted from lateral and vertical acceleration of car-body to regress TQI value by multiple linear regression method.A CRH2 trailer car dynamics simulation model is built to verify our method.The effectiveness of the method is verified by simulation experiments with actual track irregularity data in Beijing-Guangzhou line,as all the estimated TQI values are consistent with the actual values.
track irregularities on-line inspection track quality index multiple linear regression
Yuanxing Zhang Xinya Sun Xiaobin Xu Wei Dong Yindong Ji
Tsinghua National Laboratory for Information Science and Technology,Department of Automation,Tsinghu Institute of System Science and Control Engineering,Hangzhou Dianzi University,Hangzhou,China
国际会议
重庆
英文
1369-1372
2017-03-25（万方平台首次上网日期，不代表论文的发表时间）