冗余等待时间建模及匝道多目标协调控制  

Redundancy Waiting Time Modelling and Multi-objective Ramp Coordinated Control

作　　者：李健[1,2] 贾元华[1] 敖谷昌[1] 

机构地区：[1]北京交通大学交通运输学院,北京100044 [2]北京市轨道交通指挥中心,北京100101

出　　处：《信息与控制》2012年第2期244-250,255,共8页Information and Control

基　　金：国家863计划资助项目(2007AA11Z213);北京交通大学优秀博士生科技创新基金资助项目(2008141052522)

摘　　要：针对匝道等待时间描述中存在信息缺失的问题,结合排队论提出了一种新的冗余等待时间概念并建模分析.以此为基础,给出了匝道多目标协调控制方程,并以径向基为核函数设计了一种基于支持向量机的匝道控制律求解方法.利用高速公路联络线转向城市快速路的高峰时段实例数据进行仿真.实验结果表明,与其它控制方法相比,所提的模型和算法在描述匝道状态和规避冗余等待等方面的效果更优.Aiming at solving the problem of information missing in ramp waiting time description,a novel concept of redundancy waiting time is proposed and its model is analyzed combining queuing theory.On the basis,a function for multi-objective ramp coordinated control is presented,and a method for solving ramp control law based on the support vector machine with radial basis kernel function is designed.The simulation based on in-situ data of traffc flow from freeway connecting link turn to expressway in high-density period is performed.The experiment results show that comparing with other control methods,the proposed model and the algorithm are better in describing the state of the ramps and in reducing redundancy waiting time.

关 键 词：交通控制 匝道控制 控制律 冗余等待时间 

分 类 号：N945.21[自然科学总论—系统科学] U491.5[交通运输工程—交通运输规划与管理]