纵断面曲率检测及线形识别方法  

Longitudinal Section Curvature Detection and Profile Recognition Method

作　　者：程朝阳 王昊 李颖 余宁 魏世斌 韩志 CHENG Zhaoyang;WANG Hao;LI Ying;YU Ning;WEI Shibin;HAN Zhi(Infrastructure Inspection Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)

机构地区：[1]中国铁道科学研究院集团有限公司基础设施检测研究所,北京100081

出　　处：《铁道建筑》2023年第8期40-43,共4页Railway Engineering

基　　金：中国铁道科学研究院集团有限公司基金(2021YJ218)。

摘　　要：为更好地检测纵断面竖曲线曲率,识别曲线线形,首先建立惯性坐标系并提出纵断面曲率检测算法,利用补偿滤波器消除检测中的速度对抗混滤波器截止频率的影响,基于卡尔曼最优估计抑制速度传感器的误差和跳变;然后将竖曲线曲率合成信号经过矩形窗级联的低通滤波器处理,避免趋势项对检测结果的影响;最后,选取曲率作为纵断面线形特征识别参数,按照曲率特征同时采用线性拟合的方式对纵断面曲率检测数据进行分段,完成纵断面的线形识别。利用某高速铁路线路联调联试高速综合检测列车实测的三轴陀螺仪数据和线路高程的台账数据进行验证。结果表明,纵断面曲率检测及纵断面线形识别的结果均与线路台账相符,该方法能够较好地完成纵断面曲率检测和线形识别,表征纵断面的线形特征。In order to better detect the curvature of longitudinal section vertical curves and identify the curve profile,an inertial coordinate system was first established and a longitudinal section curvature detection algorithm was proposed.A compensation filter was used to eliminate the influence of velocity on the cutoff frequency of the anti-aliasing filter during detection,and the error and jump of the velocity sensor were suppressed based on the Kalman optimal estimation.Then,the vertical curve curvature synthesis signal passed low-pass filter cascaded through a rectangular window,to avoid the influence of trend terms on the detection results.Finally,curvature was selected as the recognition parameter for the longitudinal section profile linear feature,and the longitudinal profile curvature detection data was segmented using linear fitting based on the curvature feature to complete the longitudinal section linear recognition.The measured three-axis gyroscope data and track elevation ledger data for joint debugging and testing of a high speed comprehensive inspection train in a high speed railway was used for verification.The results show that the results of longitudinal curvature detection and longitudinal profile recognition are consistent with the line ledger.This method can effectively complete longitudinal curvature detection and profile recognition,and characterize the profile features of the longitudinal section.

关 键 词：高速铁路 竖曲线检测 纵断面线形识别 数字滤波 线性回归 卡尔曼滤波 

分 类 号：U216.3[交通运输工程—道路与铁道工程]