摘要
从高速公路交通流的宏观、动态特性出发，首先给出了交通流控制和仿真中常用的宏观、动态、确定性交通流模型，并结合交通调查数据，利用仿真和优化技术对模型中的参数进行辨识，从而获得了能比较准确地描述交通流真实行为的模型，然后提出了低密度区的可变速度控制，中密度区的可变限速和人口匝道联合控制及出口匝道分流和入口匝道协调（高密度区）控制模型，并给出了上述三个问题的最优解，最后利用计算机模拟了受控和未控交通流，其结果令人满意。
From the viewpoint of macro dynamic characteristics of freeway trafficflow, this paper first presents a commonly used macroscopic dynamic deterministictraffic flow model for traffic control and simulation by integrating traffic survey data and simulation assumption. It giveseparameter identification and optimization ofthe model by using computer simulation and optimization techniques, so we obtaina model which is capable of decribing real traffic flow dynamic behavior more precisely, then it proposes a variable speed limit control, on-ramp control and off-rampdiversion control models with optimal solutions for low, moderate and high trafficdensity sections, finally, traffic flow with and without control is simulated by computer with satisfactory results.
出处
《公路交通科技》
CAS
CSCD
北大核心
1996年第4期29-35,共7页
Journal of Highway and Transportation Research and Development
关键词
高速公路
模型
计算机仿真
交通流
控制
Freeway Model Performence index Optimization problemComputer simulation
