Nonlinear Analysis of Road Traffic Flows in Discrete Dynamical System

被引：8
|
作者：
Xu, Meng [1 ]
Gao, Ziyou [1 ]
机构：
[1] Beijing Jiaotong Univ, Sch Traff & Transportat, Beijing 100044, Peoples R China
来源：
JOURNAL OF COMPUTATIONAL AND NONLINEAR DYNAMICS | 2008年 / 3卷 / 02期
关键词：
chaos; discrete dynamic model; traffic low; Lyapunov exponents; fractal dimension;
D O I：
10.1115/1.2833905
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this paper, we investigate the dynamic behavior of road traffic flows and study if chaotic phenomena exist in a traffic flow dynamic system. Two discrete dynamic models are proposed, which are derived from Del Castillo and Benitez's exponential curve model and maximum sensitivity curve model. Both models have two parameters, which are the ratio of free flow and sensitivity average speed and the ratio of the absolute value of kinematic wave speed at jam density and the free flow speed. Chaos is found in the two models when the two values increase separately. The Lyapunov exponents and fractal dimension were used to examine the characters of the chaos in the two models.
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收藏
页数：6
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