高速公路可变限速控制的数学建模与控制技术分析

项目名称： 高速公路可变限速控制的数学建模与控制技术分析

项目编号： No.51478428

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 建筑科学

项目作者： 王亦兵

作者单位： 浙江大学

项目金额： 80万元

中文摘要： 可变限速控制直接影响车流速度，故传统限速控制主要针对交通安全，对提升交通效率、缓解交通拥堵贡献不大。交通需求超出道路通行能力产生拥堵，因此拥堵控制的本质是需求/流量控制。本项目提出一种创新性的基于可变限速控制的高速公路主线流量调控机理，利用该机理有望将高速公路可变限速控制转变为调节流量、控制拥堵的有效手段。验证该机理的可行性是本项目的研究目标之一。现有宏观交通流模型很少考虑可变限速控制对交通流动态的影响，本项目拟建立服务可变限速控制研究的宏观交通流模型并研究新模型的稳定性；设计基于反馈控制原理的可变限速控制策略，以新建模型和控制策略为基础分析前述流量调控机理的可行性；通过微观与宏观仿真测试和评估可变限速控制系统性能，同时研究该控制系统的稳定性。本项目工作在理论和实践两方面都有重要意义。

中文关键词： 交通流理论；高速公路；交通控制

英文摘要： Variable speed limit control (VSLC) has direct impacts on vehicle speeds. Conventionally VSLC aimed at traffic safety and did not contribute much to the improvement of traffic efficiency and relief of congestion. Congestion takes place when traffic demand exceeds road capacity, so flow/demand control is essentially relevant to congestion. This project proposes an innovative mechanism of regulating flow in the mainstream of freeways based on VSLC. It is very promising, in this mechanism, to convert VSLC into effective means of regulating flow and mitigating congestion in freeways. It is one of the major aims of this project to verify the feasibility of this mechanism. Available macroscopic traffic flow models rarely formulate the impacts of VSLC on traffic flow dynamics. This project intends to develop dedicated macroscopic models and study the stability properties of the models to the end of research in this project. VSLC strategies are designed in feedback control theory. The soundness of aforementioned mechanism is analyzed on the basis of the models and control strategies newly developed. Finally, the performance of the VSLC system is evaluated thoroughly via microscopic and macroscopic simulations while the stability of the overall control system is studied analytically. The work covered by this project is significant both theoretically and practically.

英文关键词： Traffic flow theory;Freeways;Traffic control