考虑环境效益的城市快速路匝道协调控制  

Coordinated Ramp Metering of Urban Expressway Considering Environment Benefits

作　　者：胡灵龙[1] 王绍楠[1] 孙伟力[1] 王慧[1] 

机构地区：[1]浙江大学控制科学与工程学系,浙江杭州310027

出　　处：《江南大学学报（自然科学版）》2013年第5期522-527,共6页Joural of Jiangnan University (Natural Science Edition)　

基　　金：国家863计划项目(2011AA110304);浙江省自然科学基金项目(LY12F03017)

摘　　要：针对城市机动车尾气污染严重的问题,提出一种考虑环境效益的城市快速路入口匝道协调控制策略。以城市快速路宏观交通流模型为基础,将宏观交通变量转化为微观变量,然后采用微观排放模型计算尾气排放量。在模型预测控制的框架下,综合交通效率和环境效益指标,建立非线性动态优化控制命题,并基于极小值原理进行求解。在多匝道快速路网的仿真结果表明,该策略在兼顾交通通行效率的同时能有效减少机动车尾气CO,HC排放,燃油消耗也显著减少,只有NO x因平均车速的提高略有增加。The problem of designing coordinated ramp metering strategies considering environment benefits is presented in this paper.The urban expressway network is modeled by a macroscopic traffic flow model.Then,the macroscopic traffic variables are transformed into microscopic variables,which make the emission amount calculated by a well developed microscopic emission model.The coordinated ramp metering problem is formulated as a model predictive control structure,in which the objective is a combination of traffic efficiency and environment benefit.Finally,a gradient-based numerical solving algorithm is introduced for a hypothetic expressway network.Simulation results show that,using the derived optimal ramp metering strategy,the traffic efficiency as well as the environment benefit can be improved and the emission of CO,HC and fuel consumption is greatly reduced.

关 键 词：匝道控制 环境效益 宏观交通流模型 微观排放模型 

分 类 号：U491[交通运输工程—交通运输规划与管理] O232[交通运输工程—道路与铁道工程]