方案选择式区域协调控制方法及应用  

Regional coordinated control method based on decision-selection and its application

作　　者：沈国江[1] 陈文峰[1] 

机构地区：[1]浙江工业大学计算机科学与技术学院,浙江杭州310023

出　　处：《浙江工业大学学报》2016年第3期237-241,共5页Journal of Zhejiang University of Technology

基　　金：国家自然科学基金资助项目(61174174);浙江省科技厅公益技术研究工业项目(2015C31059);浙江省交通运输厅科研计划项目(2014T08)

摘　　要：针对方案生成式区域协调控制的不足,提出了一种全新的方案选择式区域协调控制方法.该方法根据实测交通数据,合理选择信号周期时间、绿信比和相位差3个控制参数,形成最实用的区域协调控制配时方案.介绍了协调路径和协调相位的确定方法,重点研究了3个控制参数的选择算法.其中,信号周期时间基于关键路口的饱和度进行选择与微调;绿信比根据路口的相位饱和度及其均值和均方差进行选择与优化;相位差的选择根据下游协调相位饱和度的变化,通过速度选择来间接实现.实际应用表明:该方法与方案生成式方法相比,平均车辆延误、平均旅行时间和平均排队长度均得到了较大改善.Aiming at the existing problem in the regional decision-generation coordinated control,a novel regional coordination control method based on decision-selection method is proposed.According to real-time traffic data,the three control parameters including signal cycle time,green signal ratio and phase difference can be selected properly and the most practical regional coordinated control scheme is formed.Firstly,the determining method of coordination path and the coordination phase is introduced,and then the selection algorithms of three control parameters are studied emphatically.The signal cycle time can be selected and adjusted according to the saturation of key intersections.The green signal ratio can be selected and optimized according to the saturation of key intersections,its mean and variance.The phase difference can be selected through speed selection according to the change of coordination phase saturation in the downstream indirectly.The practical application shows that the proposed method can improve significantly the average vehicle delay,average travel time and average queue length compared to the decision-generation method.

关 键 词：智能交通系统 交通信号 方案选择 方案生成 协调控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]