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含随机扰动因子的一个城市交通流微循环线性跟驰模型

摘要: 交通流问题是当今社会正面临的一个严峻问题之一,对交通流问题的研究有着重要的现实意义和理论意义.根据车辆跟驰模型和流体动力学模型的建模思想,采用宏观和微观相结合的方法,建立了一个含随机扰动因子的城市交通流微循环线性跟驰模型.并将所建立的模型应用于交通流微循环问题的数值模拟,研究表明:所建立的模型能够较好地实现实际交通流微循环中许多重要的基本特征.

Abstract: Traffic problem is one of rigorous problems which society faces at present. It is of great practical and theoretic significance to the research of traffic-flow problem. In this paper, a new microcirculation linear car-following model for urban traffic flow is established by combining micro models and macro models of traffic flow, based on the ideas of the car-following models and fluid dynamical models. An example on traffic-flow microcirculation is designed for the application of the new model. The new model is verified and applied by numerical simulation for the example. The results show that the new model can simulate some important fundamental properties of the practical traffic-flow microcirculation better.

关键词: 交通流模型;随机扰动;交通流微循环;数值模拟

Key words: traffic flow models;random disturbance;traffic-flow microcirculation;numerical simulation

中图分类号:O29 文献标识码:A文章编号:1006-4311(2010)34-0197-02

0引言

当今社会,不论是发达国家还是发展中国家,不管是国际大都市还是中小城市,都面临着一个共同的交通问题,所以对交通流问题的研究具有重要的现实意义。(剩余2896字)

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