太原科技大学学报
太原科技大學學報
태원과기대학학보
JOURNAL OF TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
2014年
3期
198-201
,共4页
单点交叉口%信号配时%约束优化%微粒群算法%多目标
單點交扠口%信號配時%約束優化%微粒群算法%多目標
단점교차구%신호배시%약속우화%미립군산법%다목표
single intersection%signAl timing%constrAined optimizAtion%pArticle swArm%multi objective
交叉口的信号控制,对减轻城市道路的交通拥挤,提高城市道路通行能力有极其重要的作用。以典型的四相位单点控制交叉口为例,选取每个相位进道口上的总延误时间、车辆的停车次数和道路的通行能力作为优化目标。由于求解约束优化问题的微粒群算法有利于函数型优化问题,所以利用该算法对模型进行求解,得到新的信号配时方案。仿真结果表明,与传统的 Webster 算法进行比较,由求解约束优化问题的微粒群算法所得到的信号配时方案是更优,更适合于单交叉口进行信号优化控制,为进一步分析研究城市交通线控、面控提供更好的方法。
交扠口的信號控製,對減輕城市道路的交通擁擠,提高城市道路通行能力有極其重要的作用。以典型的四相位單點控製交扠口為例,選取每箇相位進道口上的總延誤時間、車輛的停車次數和道路的通行能力作為優化目標。由于求解約束優化問題的微粒群算法有利于函數型優化問題,所以利用該算法對模型進行求解,得到新的信號配時方案。倣真結果錶明,與傳統的 Webster 算法進行比較,由求解約束優化問題的微粒群算法所得到的信號配時方案是更優,更適閤于單交扠口進行信號優化控製,為進一步分析研究城市交通線控、麵控提供更好的方法。
교차구적신호공제,대감경성시도로적교통옹제,제고성시도로통행능력유겁기중요적작용。이전형적사상위단점공제교차구위례,선취매개상위진도구상적총연오시간、차량적정차차수화도로적통행능력작위우화목표。유우구해약속우화문제적미립군산법유리우함수형우화문제,소이이용해산법대모형진행구해,득도신적신호배시방안。방진결과표명,여전통적 Webster 산법진행비교,유구해약속우화문제적미립군산법소득도적신호배시방안시경우,경괄합우단교차구진행신호우화공제,위진일보분석연구성시교통선공、면공제공경호적방법。
With the development of urbAn trAffic,the signAl timing optimizAtion of intersection hAs the extremely vi-tAl role to relieve the trAffic congestion of urbAn roAd And enhAnce cApAcity of urbAn roAd. TAking the typicAl four phAses of single intersection As exAmple,the Article tAkes the totAl delAy,number of stops And cApAcity As the opti-mizAtion objective in eAch phAse. According to the reAl-time trAffic dAtA,the corresponding weight coefficient hAs been Adjusted. BecAuse pArticle swArm Algorithm to solve constrAined optimizAtion problems is good for function op-timizAtion problems,the signAl timing scheme wAs obtAined bAsed on the model which wAs solved by using A con-strAined optimizAtion problem of the pArticle swArm Algorithm. The simulAtion results show:compAred with the trAdi-tionAl Webster Algorithm,new signAl timing scheme is effective. It is more suitAble for single intersection optimizA-tion control,And it provides A better line control And pAnel control of trAffic for further AnAlysis.