Simulation of Coordinated Ramp-metering Control in Freeway
Resource
交通與計算機, 26(5), 45-48
Journal
交通與計算機
Journal Volume
26
Journal Issue
5
Pages
45-48
Date Issued
2008-10
Date
2008-10
Author(s)
Jiao, Min-Duo
Zhang, Tang-Hsuen
Abstract
以Payne车流模型和宏观交通流连续方程为基础，将多路段的动态交通流离散方程应用于控制系统的描述，以泰勒展开式及连锁律推导二阶非线性速率方程式，构建一非线性整体匝道仪控模型。算例中以快速路检测的实时资料为前提，matlab 6.5为仿真工具，进行模拟和数值计算，仿真结果表明：非线性控制模型可有效的疏解高峰期交通拥挤的状况。
Based on Payne traffic flow model and macroscopic continuity equation, the dynamic traffic flow discrete equation of multiple segments was applied to describing the control system. The two-order nonlinear speed formulation was deduced by using Taylor s series and chain rule. A model of nonlinear coordinated ramp-metering control was established. An example was calculated and simulated by matlab 6.5. The simulation results indicate that the nonlinear control model can make the flow on mainline more stable and relax the congestion in the rush hour.
Subjects
整体性匝道仪控
非线性控制
快速路
coordinated ramp metering control
nonlinear control
freeway
Type
journal article
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