中国铁道科学2012，Vol.33Issue(z1)：46-51,6.DOI:10.3969/j.issn.1001-4632.2012.S1.08
基于稳态、非稳态振动信号分析的轨道不平顺敏感波长及其与车辆响应间关系的研究
Research on the Sensitive Wavelength of Track Irregularity and Its Relationship with Vehicle Response Based on the Stationary-State and Non-Stationary-State Vibration Signal Analysis
摘要
Abstract
Based on the frequency domain transfer characteristics between the track irregularity input and the vehicle dynamics response output, a new method for quickly determining the sensitive wavelength of track irregularity corresponding to vehicle system was put forward. By this method, the sensitive wavelength of track irregularity for a certain type of high-speed vehicle was analyzed. The results show that within the speed range of 300～360 km ? H-1, about 8 m multi-wave cycle vertical track irregularity wavelength will cause the stronger vertical vibration of high-speed vehicle and about 37 m multi-wave cycle lateral track irregularity wavelength will cause the greater lateral vibration of high-speed vehicle. Two non stationary vibration signal analysis techniques, which are short-time Fourier transform and wavelet packet analysis, were used to analyze the car body vertical acceleration characteristics of vehicle system. The results show that; the time-frequency characteristics can be more fully revealed and thus the non-stationary characteristics of the track irregularity input signal related with the vehicle vibration response signal can be indirectly analyzed.关键词
轨道不平顺/敏感波长/车辆振动响应/传递特性/信号分析/高速车辆Key words
Track irregularity/ Sensitive wavelength/ Vehicle vibration response/ Transfer characteristics/ Signal analysis/ High-speed vehicle分类
交通工程引用本文复制引用
胡晓依,侯茂锐,常崇义,李兰,陈波..基于稳态、非稳态振动信号分析的轨道不平顺敏感波长及其与车辆响应间关系的研究[J].中国铁道科学,2012,33(z1):46-51,6.基金项目
国家"八六三"计划重点项目(2009AA110302) （2009AA110302）
铁道部科技研究开发计划项目(J2010J011) （J2010J011）
