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根据北京快速环路的交通流特性及出入口间距短、交织严重的特点,改进了基础模型METANET的节点模型和路段模型,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,将采用改进最优控制(AMOC)策略的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AMOC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%.
Based on the characteristics of Beijing-Beijing rapid transit traffic flow and the short entrance-exit spacing and serious interlacing, the node model and road section model of METANET are improved. Based on this, a nonlinear optimal control model is established and the discreteness The optimal exit-entry coordination control system is studied.Based on Beijing Second Ring Expressway, the simulation results based on the improved optimal control (AMOC) strategy are compared with the traffic conditions of the measured loop data. The results show that the improved AMOC can make the rapid Road traffic flow density remained within the desired density range, the queue length is also small, the total time spent on all road vehicles decreased by 18.4%.