摘要
基于GB/T 7031—2005建立了路面谱模型,分析了加速度法测试履带车辆特殊路面路面谱的基本原理,并以此为理论依据,设计出在第一、五负重轮轮轴处安装加速度传感器并得出时域曲线的测试方案,分别记录了不同速度下长度为4 m的长波路和越野土路的加速度时域曲线,利用Matlab分析软件生成位移功率谱密度,并拟合出标准路面谱,计算出特征值。
Road surface profiles model was established based on GB/T 7031—2005.The basic principle of using acceleration method to measure special PSD of tracked vehicles was analyzed.According to these theories,acceleration sensors were fix on the axles of the 1st and 5th loading wheels and the time frequency curve was obtained.Acceleration time domain curves on 4 m long wave road and off-road road at different speeds were measured and recorded.The displacement PSD was acquired by using Matlab software and standard road surface profiles were fitted and its characteristic values were calculated.
出处
《装备环境工程》
CAS
2012年第5期37-41,共5页
Equipment Environmental Engineering
关键词
履带车辆
路面谱
功率谱密度
空间频率
时间频率
tracked vehicle
road surface profiles
power spectral density（PSD）
spatial frequency
time frequency
