面向用户的汽车道路谱重构方法

摘要

为准确确定汽车道路耦合动力学的路面激励，提出一种基于实际用户使用的道路谱获取方法。使用多功能激光路面检测仪进行道路谱数据采集，根据汽车用户需求，选择实际使用的路面数据，通过对路面高程数据去除毛刺、平滑连接、多倍频程滤波等预处理，进行功率谱密度分析计算，获得用户典型道路谱的等级功率谱；应用开发的Caroad软件系统重构出用户需要的道路时域谱，并生成可用于ADAMS、VPG、Carsim动力学软件的仿真路面，通过相关系数分析了道路谱的重构精度。通过实例分析，获得了符合用户需要的典型虚拟三维路面谱，道路谱重构精度较高。%In order to determine the road motivation accurately for the vehicle and road coupling dynamics,a road spectrum acquisition method was presented based on the actual users.Roads spec-trum data was acquired by using multifunction laser pavement detector according to the needs of car users,and the road elevation data was preprocessed by removing the singular value,the smooth con-nection,multi-octave filter.The user typical road spectrum and grade power spectrum were acquired by the power spectral density analysis and calculation.A road domain spectrum of user need was re-constructed by application Caroad software system,and simulation road spectrum were generated, which could be used in ADAMS,the VPG,of Carsim software and road spectrum reconstruction pre-cision were analyzed with the correlation coefficient method.By instance analysis,three-dimensional road spectrum was obtained that meets user's requirements,and the road spectrum reconstruction precision is better.