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一种新的宏观交通流模型

DOI: 10.3969/j.issn.1005-3026.2014.07.032, PP. 1055-1058

Keywords: 跟驰模型,宏观交通流模型,Payne模型,Wiltham模型,Zhang模型,线性稳定

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Abstract:

为了更好地进行城市交通规划与控制,亟待发展一种有效描述交通流动的数学模型.基于交通流研究中通常采用的微观-宏观参量间的联系方法,得到了一种新的动力学模型.它以线性加权的方式考虑了车辆相对速度的影响,使得新模型更加符合实际的交通情况.新模型考虑了车辆间相对距离对后车加速度的影响,一些经典的连续交通流模型可以视为新模型的特例,如Payne模型、Wiltham模型和Zhang模型.此外,研究了新模型的特征速度和线性稳定性,发现新模型恒稳定,且模型是否具有各向异性由各向异性因子决定.

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