CAJ | 학술논문

轨道不平顺时频域分析和引起车体振动的不利波长的准确提取对运营线路的养护维修具有重要的工程意义。本文提出轨道不平顺特征(不利)波长自动提取算法：通过离散小波变换自适应提取轨道不平顺和车体振动响应各频段信号，对各信号进行Wigner-Ville和互Wigner-Ville时频能量分析，利用 Hough变换抑制多分量信号 Wigner-Ville变换中的交叉干扰项，导出了轨道不平顺特征(不利)波长提取公式。以朔黄重载铁路2011年7月~2012年10月的轨检数据进行验算，证明了方法的有效性，得出的朔黄重载铁路特征波长统计值对我国重载铁路线路的运营管理和养护维修具有参考价值。
궤도불평순시빈역분석화인기차체진동적불리파장적준학제취대운영선로적양호유수구유중요적공정의의。본문제출궤도불평순특정(불리)파장자동제취산법：통과리산소파변환자괄응제취궤도불평순화차체진동향응각빈단신호，대각신호진행Wigner-Ville화호Wigner-Ville시빈능량분석，이용 Hough변환억제다분량신호 Wigner-Ville변환중적교차간우항，도출료궤도불평순특정(불리)파장제취공식。이삭황중재철로2011년7월~2012년10월적궤검수거진행험산，증명료방법적유효성，득출적삭황중재철로특정파장통계치대아국중재철로선로적운영관리화양호유수구유삼고개치。
Time-frequency analysis on track irregularity and accurate extraction of detrimental wavelengths cau-sing car-body excitation are of great importance to the repair and maintenance of railway lines.This paper pro-posed the automatic extraction algorithm of track irregularity characteristic (detrimental)wavelengths:At first,acquiring adaptively the track irregularity and car-body vibration signals in all frequency bands with the DWT (Discrete Wavelet Transform)method,and then analyzing the (cross)Wigner-Ville time-frequency ener-gies for the signals;using the HT (Hough Transform)to further suppress the cross distracters;deriving the formula for extracting track irregularity characteristic (detrimental)wavelengths lastly.The track inspection data of the Shuo-Huang Heavy Haul Railway from 2011.07 to 2012.10 were checked,showing that the auto-matic extraction algorithm was correct.The statistical values of the track irregularity characteristic wavelengths of the Shuo-Huang Railway are of reference to operating management and maintenance of heavy haul railway in our country.