基于自然驾驶的山区高速公路行驶舒适性分析

发布时间：2018-08-23 21:28

【摘要】：为了掌握山区高速公路的行驶舒适性水平及其关键影响因素,开展了自然驾驶行为试验。采集了多款小客车的加速度数据,得到了不同轴向加速度的峰值累积频率曲线、特征分位值和均方根值。分析结果表明:(1)加速度的幅值和特征分位值略低于减速度,不同的道路对象和车型会导致轴向加(减)速度出现差别,但绝大部分数据都低于较舒适阈值,因此具有良好的纵向舒适性;(2)第85分位横向加速度在0.38~1.1 m/s~2分布,不同车型、不同道路的差别比较明显;总的来看山区高速公路具有良好的横向舒适性;(3)在竖向舒适性方面,仅三菱车在极少数位置上会有不适的感觉,路面震动表现和彩色路面并不会导致乘员不舒适;(4)各轴向加速度的幅值差异很小,三个轴向的加速度加权均方根值是在"舒适"和"稍有不适"区间内分布。
[Abstract]:In order to understand the driving comfort level of mountain expressway and its key influencing factors, the natural driving behavior test was carried out. The acceleration data of several passenger cars are collected, and the peak cumulative frequency curves, characteristic quantiles and root-mean-square values of different axial accelerations are obtained. The results show that: (1) the amplitude and characteristic quantile of acceleration are slightly lower than deceleration, and different road objects and vehicles will lead to the difference of axial plus (minus) speed, but most of the data are lower than the more comfortable threshold. Therefore, it has good longitudinal comfort; (2) the 85th quartile transverse acceleration is distributed at 0.38g 1.1 m/s~2, the difference between different models and roads is obvious; generally speaking, the mountain expressway has good lateral comfort; (3) in vertical comfort, Only Mitsubishi cars in a very few places will feel uncomfortable, road vibration performance and color road surface will not cause discomfort to the occupants; (4) the amplitude of the axial acceleration varies very little, The three axial acceleration weighted RMS values are distributed in the "comfort" and "slight discomfort" regions.
【作者单位】：重庆交通大学土木工程学院;重庆建筑工程职业学院;西南交通大学交通运输与物流学院;重庆交通大学交通运输学院;
【基金】：国家自然科学基金(51678099,51278514) 交通运输部应用基础研究项目(2015319814050) 重庆市科技计划(cstc2014jcyjA30024)资助
【分类号】：U491.25

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