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Chaotic Property Research for Freeway Traffic Flow

机译:高速公路交通流的混沌特性研究

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摘要

Based on Greenshields' model, this paper constructs a dynamic discrete traffic flow model with the form of Logistic map and presents dynamic analysis for this model. By taking the occupancy as the model variable and the ratio of free flow speed to average speed as the control parameter of the model, we theoretically analyze the different traffic flow condition and the producing and transformation mechanism of chaos for freeway traffic flow. At last, we employ the largest Lyapunov exponent and power spectrum technique to estimate chaos for the real measured freeway traffic flow series so as to validate the chaotic property of freeway traffic flow series.
机译:基于Greenshields模型,以Logistic映射的形式构建了动态离散交通流模型,并对该模型进行了动态分析。以占用率为模型变量,以自由流速度与平均速度之比作为模型的控制参数,从理论上分析了不同的交通流状况以及高速公路交通流的混沌产生和转化机理。最后,我们采用最大的李雅普诺夫指数和功率谱技术对实际测得的高速公路交通流序列进行混沌估计,以验证高速公路交通流序列的混沌特性。

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