基于人工势场的交叉口车辆集聚模型  

Vehicle cluster models at intersection based on artificial potential field

作　　者：张玲玲[1] 贾元华[1] 曹瑾鑫[2] 

机构地区：[1]北京交通大学交通运输学院,北京100044 [2]内蒙古大学交通学院,呼和浩特010070

出　　处：《北京交通大学学报》2012年第6期117-121,127,共6页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家研究发展"863"计划项目资助(2007AA11Z213)

摘　　要：为了提高确定交叉口排队长度和排队车辆数的精确度,有效地刻画交叉口车辆集聚行为特性,从车辆的实际运行规律出发,将车辆车头间距作为车辆在交叉口红灯排队的影响因素.借鉴人工势场的基本思想,分析城市道路上车辆速度与车头间距之间的关系,建立了交叉口车辆集聚模型,并用Matlab进行仿真实验,得到车辆在交叉口处的集聚仿真图与各种集聚过程的车辆运动特征图.依据本文模型进行的仿真实验和VISSIM仿真实验得到的结果与实际数据进行对比,结果表明,本文建立的交叉口车辆集聚模型使交叉口车辆排队模拟效果大大提高,同时该模型还能形象地展现每辆车在集聚过程中的运行情况.In order to promote the accuracy of queue length and the number of vehicles at intersection and depict intersection behavioral characteristics of gather vehicles more effectively,distance headway is regarded as the influence factors of intersection queue up a red light based on the actual operation rule of vehicles.Using the basic idea of the artificial potential field for reference,this paper analyzes the relationship between traffic speed and distance headway on the urban road,and establishes the cluster models.Based on the models,the simulation experiment using Matlab to obtain the simulation plans and all kinds of vehicles＇ movement process characteristics graph.In addition,the simulation results of experiment based on the models and VISSIM will be compared with the actual data,the results show that the established models improve imitate effect of vehicles queue at intersection greatly,at the same time,operation aspect of every car in the process of gathering can be showed through the simulation experiment.

关 键 词：道路交叉口 车辆集聚模型 人工势场 排队长度 

分 类 号：U491.113[交通运输工程—交通运输规划与管理]