基于分子动力学的车辆需求安全距离及模型  

Molecular kinetics behavior of car-following required safe distance and its model

作　　者：陈文娇[1] 曲大义[1] 杨万三[1] 陈秀锋[1] 卞晓华[1] 

机构地区：[1]青岛理工大学汽车与交通学院,青岛266520

出　　处：《青岛理工大学学报》2014年第1期94-99,110,共7页Journal of Qingdao University of Technology

基　　金：国家自然科学基金资助项目(51178231);国家科技支撑计划资助项目(2009BAG13A03);山东省自然科学基金资助项目(ZR2012EEL28)

摘　　要：应用分子动力学研究车辆跟驰特性,探索车辆需求安全距离及其应用模型构建.跟驰状态下,驾驶员不仅要考虑避免与同一车道前后方车辆发生碰撞,还要将侧向间距控制在一个合理的范围内;建立前导车处于匀减速行驶状态下的需求安全距离模型;研究分析侧向干扰因素的影响以及纵向间距和运行速度对侧向间距产生的影响作用,并建立侧向需求安全距离模型.运用试验调查数据对模型进行验证分析,结果表明,驾驶员对需求安全距离的科学预测有利于安全运行.Applying molecular kinetics studies car-following behavior and probes into its required safe distance and construction of car-following model.Under the car-following state, a driver should not only try to avoid colliding with vehicles before and after on the same lane, but also keep the lateral distance within a reasonable range.This paper constructs a required safe distance model in which the leading car keeps an even speed,then studies and analyzes the effect of lateral interference factors as well as that of the longitudinal distance and driving speed upon the lateral distance,and establishes the lateral required safe distance model.By testing and analyzing the model with experimental investigation data,the results show that drivers＇ scientific prediction on the required safe distance is favorable for safe operation of vehicles.

关 键 词：交通运输系统工程 交通流理论 跟驰特性 分子动力学 需求安全距离 

分 类 号：U491.1[交通运输工程—交通运输规划与管理]