交通运输系统工程与信息 ›› 2017, Vol. 17 ›› Issue (1): 98-105.

• 智能交通系统与信息技术 • 上一篇    下一篇

基于MFD 的城市区域路网多子区协调控制策略

张逊逊,许宏科*,闫茂德   

  1. 长安大学电子与控制工程学院,西安710064
  • 收稿日期:2016-07-13 修回日期:2016-09-17 出版日期:2017-02-25 发布日期:2017-02-27
  • 作者简介:张逊逊(1986-),女,河南漯河人,博士生.
  • 基金资助:

    国家自然科学基金/ National Natural Science Foundation of China(61473229);中央高校基本科研业务费资助项目/ The Special Fund for Basic Scientific Research of Central Colleges(2013G3324005,310832163403,310832161012).

Coordinated Control Strategy for Multi-subarea Based on MFD in Urban Zonal Road Networks

ZHANG Xun-xun, XU Hong-ke, YAN Mao-de   

  1. School of Electronic and Control Engineering, Chang’an University, Xi’an 710064, China
  • Received:2016-07-13 Revised:2016-09-17 Online:2017-02-25 Published:2017-02-27

摘要:

针对城市路网中区域性的大范围交通拥堵问题,提出了基于宏观基本图 (Macroscopic Fundamental Diagram, MFD)的多子区协调控制策略,以提升路网的整体运 行效益.该策略将城市区域路网划分为多个子区,每个子区的交通流又划分为内部流和转 移流,综合两者建立了基于MFD的多子区交通流模型,并给出了对各子区交通流诱导时 的边界约束条件;通过调节子区边界控制输入,设计了边界反馈控制器对各子区转移流 进行动态诱导,继而进行了迭代分析,以判断其是否满足边界约束,并对控制器进行了 Lyapunov 稳定性分析.仿真结果表明,所提策略使城市区域路网中各子区车辆总数渐近 收敛于设定值,且整体平均流量提高了约11%,大范围交通拥堵状况得到明显缓解

关键词: 交通工程, 城市区域路网, 多子区协调控制, 宏观基本图, 边界反馈控制器

Abstract:

To deal with the regional traffic congestion over large areas in urban zonal road network, a coordinated control strategy for multi-subarea based on the MFD is proposed to improve the effectiveness of the whole road network. The proposed strategy divides the zonal road network into multiple subareas, and the traffic flow of each subarea contains the internal flow and the transfer flow. By combining the two types of traffic flow together, the multi- subarea model for the entire road network is built based on the MFD. Meanwhile, the bounded constraints of the accumulations of the subareas are given. Then,a boundary feedback controller, which is realized by regulating the inputs of the subareas’boundaries, is designed to induce the transfer flow of the subareas dynamically. Moreover, the iterative analysis is made to judge whether it meets the boundary constraints, and the Lyapunov stability of the controller is analyzed. The simulation show that the accumulations of the subareas asymptotically converge to the set point and the average flow increases about 11% than the previous, such that the urban regional traffic congestion is relieved significantly.

Key words: traffic engineering, urban road network, coordinated control for multi- subarea, macroscopic fundamental diagram, boundary feedback controller

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