西南交通大学学报
西南交通大學學報
서남교통대학학보
JOURNAL OF SOUTHWEST JIAOTONG UNIVERSITY
2014年
5期
882-887
,共6页
郭海锋%彭起涛%程君%张珏
郭海鋒%彭起濤%程君%張玨
곽해봉%팽기도%정군%장각
干线%交通控制%平滑%过渡%相位差
榦線%交通控製%平滑%過渡%相位差
간선%교통공제%평활%과도%상위차
artery%traffic control%smoothing%transition%offset
为减少动态协调控制系统中因信号控制方案切换而导致系统产生的扰动,保证交通流的平稳运行,在综合考虑过渡时间和平滑特性的基础上,提出一种基于最佳相位差调整量控制方案的快速平滑过渡方法。该方法以使各交叉口相位差变化量最小为目标,优化计算得出各交叉口最佳相位差调整量,并以此为依据计算各交叉口在控制方案过渡期间的信号周期。仿真实验对比分析显示,当相位差变化量为40 s时,提出的方法与国外著名的Add和Subtract方法相比,车均延误指标分别下降了23%和11%,路网车均停车次数指标分别下降了9%和8%;此外,本文方法能够使干线协调控制方案最多通过3个信号周期快速地过渡到新方案,且过渡期间的控制效果优于Add和Subtract方法。
為減少動態協調控製繫統中因信號控製方案切換而導緻繫統產生的擾動,保證交通流的平穩運行,在綜閤攷慮過渡時間和平滑特性的基礎上,提齣一種基于最佳相位差調整量控製方案的快速平滑過渡方法。該方法以使各交扠口相位差變化量最小為目標,優化計算得齣各交扠口最佳相位差調整量,併以此為依據計算各交扠口在控製方案過渡期間的信號週期。倣真實驗對比分析顯示,噹相位差變化量為40 s時,提齣的方法與國外著名的Add和Subtract方法相比,車均延誤指標分彆下降瞭23%和11%,路網車均停車次數指標分彆下降瞭9%和8%;此外,本文方法能夠使榦線協調控製方案最多通過3箇信號週期快速地過渡到新方案,且過渡期間的控製效果優于Add和Subtract方法。
위감소동태협조공제계통중인신호공제방안절환이도치계통산생적우동,보증교통류적평은운행,재종합고필과도시간화평활특성적기출상,제출일충기우최가상위차조정량공제방안적쾌속평활과도방법。해방법이사각교차구상위차변화량최소위목표,우화계산득출각교차구최가상위차조정량,병이차위의거계산각교차구재공제방안과도기간적신호주기。방진실험대비분석현시,당상위차변화량위40 s시,제출적방법여국외저명적Add화Subtract방법상비,차균연오지표분별하강료23%화11%,로망차균정차차수지표분별하강료9%화8%;차외,본문방법능구사간선협조공제방안최다통과3개신호주기쾌속지과도도신방안,차과도기간적공제효과우우Add화Subtract방법。
In order to eliminate disturbances caused by traffic signal transition and ensure smooth traffic flow in dynamic coordination control system, in view of transition time and smoothing characteristics,a fast smoothing transition method was proposed based on the optimization of offset adjustment. This method intends to minimize offset difference for each intersection,calculates the optimal offset adjustments,and further computes signal interval during the transition of coordination control plans. The simulation analysis shows that when the amount of offset adjustment is 40 s,the proposed method,in contrast to Add and Subtract methods,can decrease average vehicle delay by 23% and 11%,and average number of stops by 9% and 8%. Furthermore,the proposed method can ensure transition time no more than 3 signal intervals,and its control performance is better than those of Add and Subtract methods.