元胞自动机FI和NS交通流混合模型的研究  

Study of a Cellular Automaton FI-and-NS Mixed Model for Traffic Flow

作　　者：吴可非[1] 邝华[1] 孔令江[1] 刘慕仁[1] 

机构地区：[1]广西师范大学物理与信息工程学院,广西桂林541004

出　　处：《广西师范大学学报（自然科学版）》2005年第4期8-12,共5页Journal of Guangxi Normal University:Natural Science Edition

基　　金：国家自然科学基金资助项目(70371067;10347001;10562001);广西自然科学基金资助项目(0447030);广西"新世纪十百千人才工程"专项基金资助项目(2001204)

摘　　要：考虑车辆的驾驶员具有其不同的驾驶特点,建立了单车道开放边界条件下元胞自动机F I模型和N S模型混合的交通流模型.通过计算机模拟,研究了混合交通流的密度、速度和流量受边界、N S型车辆的随机减速概率PNS、F I型车辆的随机减速概率PF I和N S型车辆的产生概率α′的影响.结果表明,PNS和α′是决定混合交通流的主要因素,它们的值越大,混合交通流的密度、速度和流量就越小,混合模型的密度、速度和流量都比N S模型的大.Considering the drivers characters of different kinds of vehicles adopting different rules, this paper presents a cellular automaton FI-and-NS mixed model for traffic flow on a single-lane roadway with open boundary conditions. By using computer numerical simulation, the paper studies the effect of boundary, stochastic deceleration probability of the vehicles of NS model PNS, stochastic deceleration probability of the vehicles of FI model PFI and the injection rate of the vehicles of NS model α′ on the density,velocity,and the mixed traffic flow. Computer simulation results show that PNS and α′ are the major factors that dominate the mixed traffic flow. The higher the values of PNS and α′, the lower the density, velocity and flow of the mixed traffic. Besides, the density, velocity and the mixed flow are higher than that of NS model.

关 键 词：元胞自动机 开放边界条件 混合交通流模型 

分 类 号：O550[理学—热学与物质分子运动论]