基于仿真的城市路网动态分配矩阵估计方法  

An Estimation of Dynamic Assignment Matrix of Urban Traffic Network based Simulation

作　　者：刁阳[1] 隽志才[1] 

机构地区：[1]上海交通大学安泰经济与管理学院,上海200052

出　　处：《系统管理学报》2011年第3期376-383,共8页Journal of Systems & Management

基　　金：国家863计划资助项目(2007AA11Z203)

摘　　要：动态交通分配矩阵是离线状态下多时段OD矩阵估计问题中的一个重要的输入,它刻画了以前时段的OD流量与当前时段的路段检测流量之间的动态关系。对该矩阵的准确估计关系到OD矩阵的估计精度。对现有解析模型进行分析的基础上,提出基于计算机仿真的改进模型,并借助Transmodeler仿真器对此进行精确估计。实证研究表明,基于仿真的估计方法能够在考虑拥挤效应的情况下检测出车辆穿越检测器的时刻,从而对分配矩阵给出准确的估计。A key input of off-line dynamic OD matrix estimation problem is dynamic traffic assignment matrix which gives a description of dynamic relationship between prior OD matrix and current link flows.The accurate estimation of this matrix affects the precision of estimated OD matrix.This paper firstly analyses existing analytical models and proposes an advanced model.We also use simulator ＂Transmodeler＂ to estimate this matrix accurately.Empirical studies show that the simulation based method can detect the moment that vehicles cross the detectors while taking account of congestion effect,thus obtain an accurate estimation.

关 键 词：动态交通分配 分配矩阵估计 仿真 transmodeler仿真器 

分 类 号：F062.9[经济管理—政治经济学]