基于排队长度均衡的交叉口信号配时优化策略  

Optimal signal timing strategy based on the equilibrium of queue length

作　　者：齐驰[1,2] 侯忠生[1] 贾琰[1] 

机构地区：[1]北京交通大学电子信息工程学院,北京100044 [2]陆军航空兵学院机载设备系,北京101123

出　　处：《控制与决策》2012年第8期1191-1194,1200,共5页Control and Decision

基　　金：国家自然科学基金重点项目(60834001)

摘　　要：城市交通的快速发展和交通需求的不断增长,使得城市交通拥堵日益严重,由此造成的时间延误和经济损失越来越大.鉴于此,提出了基于排队长度均衡的交叉口信号配时优化策略,根据排队长度均衡的控制思想,实时动态调整各相位绿灯时间,以达到排队长度均衡的控制目标,保证了绿灯时间的充分利用.通过近似动态规划方法的引入,使得该算法具有自学习和自适应的特性,不依赖于交通流模型.仿真结果验证了算法的有效性.With the rapid development of urban traffic and the increasing transportation demand, the traffic congestion becomes more and more serious so that the time delay and economic loss are more and more big. The optimal signal timing strategy is investigated for an urban intersection. According to the concept of queue length balanced controlling, the green time for each phase is adjusted dynamically to achieve the equilibrium of queue length and make full use of green time. Approximate dynamic programming is adopted so that the algorithm possesses the characteristics of self-learning and self- adaptation, independent of the traffic flow model. The simulation results show the effectiveness of the proposed algorithm.

关 键 词：排队长度均衡 近似动态规划 信号配时 

分 类 号：TP271[自动化与计算机技术—检测技术与自动化装置]