加速度变化对道路平面线形行车舒适性评价方法
发布时间:2018-01-10 10:01
本文关键词:加速度变化对道路平面线形行车舒适性评价方法 出处:《广西师范大学学报(自然科学版)》2014年02期 论文类型:期刊论文
更多相关文章: 道路线形 加速度变化 加速度干扰 加速度变化率 行驶舒适性
【摘要】:公路行车舒适性与平面道路线形密切相关,在分析车辆在不同道路线形下运行特性的基础上,提出采用加速度和加速度变化对道路平面线形舒适性评价的方法,阐述横向加速度、轴向加速度与舒适性的关系及评价指标。通过分析加速度的变化对舒适性的影响,建立加速度变化率模型和加速度干扰模型。用加速度干扰表示速度摆动大小和变化频繁度,给出在直线、缓和曲线、圆曲线路段上加速度干扰的离散化模型。通过对不同道路线形的实例仿真,定量分析加速度变化率对舒适性的影响,以加速度干扰大小分析不同线形路段条件对行车舒适性的影响程度及变化趋势,并针对不同道路线形给出提高舒适性的改善方法。仿真结果表明,该评价方法为检验道路平面线形舒适性提供了参考依据。
[Abstract]:Road driving comfort is closely related to planar road alignment. On the basis of analyzing the running characteristics of vehicles under different road alignment, a method for evaluating road planar alignment comfort by using acceleration and acceleration changes is proposed. The relationship between lateral acceleration, axial acceleration and comfort and its evaluation index are described. The influence of acceleration on comfort is analyzed. The acceleration change rate model and the acceleration disturbance model are established. The velocity swing magnitude and variation frequency are expressed by the acceleration interference, and the curve in the straight line is given. The discrete model of acceleration disturbance on circular curve section. Through the simulation of different road alignment, the effect of acceleration change rate on comfort is quantitatively analyzed. According to the magnitude of acceleration interference, the influence degree and change trend of different linear section conditions on driving comfort are analyzed, and the improvement methods for different road alignment are given. The simulation results show that. The evaluation method provides a reference for testing the road plane linear comfort.
【作者单位】: 江西理工大学电气工程与自动化学院;华南理工大学土木与交通学院;
【基金】:国家自然科学基金资助项目(61263024,51268017) 江西省教育厅科技项目(GJJ13428)
【分类号】:U412.3
【正文快照】: 0引言在我国,氋等级公路的建设随着交通需求的增加而不断增加,道路的设计当中,线形设计在满足快速、高效、安全的前提下,对行驶的舒适性提出了更高的要求。现有的道路设计中,设计者在保证行车安全的条件下,主要考虑车辆动力学方面的影响因素[1],对道路线形的评价主要集中于线,
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