摘要
提出了一种非线性方法设计高速公路入口匝道反馈控制器,非线性反馈控制器由高速公路交通流模型和比例积分调节器组成。阐述了入口匝道控制原理,建立了高速公路交通流模型,模型的流量—密度关系是非线性的,设计了高速公路匝道非线性反馈控制器模型。仿真结果表明非线性反馈控制器性能优越,它能使高速公路主线交通流密度保持为设定的期望密度,同时又能维持可接受的匝道服务水平。
A nonlinear approach is proposed for designing a feedback ramp controller in freeway.The nonlinear feedback controller is composed of a freeway traffic flow model and a proportional-plus-integral regulator.The control principle of a ramp is formulated.The freeway traffic flow model for the ramp control was developed,the model's flow-density relationship is nonlinear,and the model of nonlinear feedback controller is built.Simulation results show that the nonlinear feedback controller is of high performance.It can achieve a desired traffic density along the mainline of a freeway while maintaining an acceptable ramp service level.
出处
《计算机工程与应用》
CSCD
北大核心
2005年第20期111-113,共3页
Computer Engineering and Applications
基金
广东省自然科学基金资助项目(编号:010486)
