基于改进AMOC的北京快速环路协调控制策略研究

根据北京快速环路出入口间距短、交织严重以及交通流特性的特点，对基础模型METANET进行了改进，并在此基础上，建立了非线性最优控制模型，给出了离散性最优出入口协调控制系统解。以北京二环快速路为实例，将采用改进AMO控制策略仿真结果与实测环路数据的交通状态进行比对，结果表明采用改进AMO控制策略能使快速路交通流密度维持在期望的密度范围内，排队长度也较小，路网所有车辆旅行总时间下降18.4%。

Coordinated ramp Control of Beijing Ring-Freeway Based on Amelioration AMOC

The Advanced Motorway Optimal Control (AMOC) is proposed by Kotsialos in 2002 ameliorated in this paper based on Beijing ring-freeway characters. Nonlinear optimal control model for coordinating ramp metering is set up, and the discrete-time sub-optimal solution is obtained. In order to evaluate the strategy’s efficiency and applicability, a comparison is made with the non-control freeway and the amelioration AMOC control strategy. The result show that the AMOC can reduce the Total Time Spent (TTS) of all vehicles in the network and maintain the freeway operated at a desired traffic state.