Dynamic signal timing algorithm at single-point intersection based on queuing condition
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摘要: 以绿灯末尾排队状态为目标, 研究了二相位控制单点交叉口的动态信号配时。根据排队形成和消散过程建立了排队模型, 分析了信号周期、绿信比和到达率对排队状态的影响。以两相位排队均处在弱欠饱和状态为控制目标, 提出了随到达率变化的简便信号配时算法, 根据总流量比计算信号周期, 根据较大的流量比调节主相位绿信比。仿真结果表明: 信号周期缓慢地同向改变两相排队状态, 绿信比反向改变两相排队状态, 到达率仅改变相应相位的排队状态。当交叉口饱和流率为0.50 pcu·s-1, 黄灯和绿灯前损时间为4 s, 到达率在0.10~0.26 pcu·s-1之间变化时, 两相排队始终都在弱欠饱和状态, 说明配时算法是有效的。Abstract: The queuing states in the green end were taken as objective, the dynamic signal timing at single-point intersection under the control of two-phase signal was studied, a queuing model was built according to the queuing and discharging process, and the effects of signal cycle, split and arrival ratio on the queuing states were analysed.A signal timing simple algorithm following the fluctuation of arrival ratio was put forward when two phases were in little under-saturation queuing states, the cycle was calculated according to the total ratio of flow volume, and the split of main phase was adjusted depending on the higher ratio of flow volume.Simulation result indicates that the cycle slowly changes both phases queuing conditions in the same direction, the split changes them in the reverse direction, and the arrival ratio only alters the queuing conditions of corresponding phases.When saturation flow rates are 0.50 pcu·s-1, the times of yellow and green former losses are 4 s, and the arrival ratio varies from 0.10 to 0.26 pcu·s-1, two phases are in little under-saturation queuing states, so the algorithm is effective.
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表 1 信号周期与主、次相位绿信比计算结果
Table 1. Computation result of signal cycles, splits of primary and secondary phases
到达率/(pcu·s-1) q1=0.21q2=0.16 q1=0.25q2=0.14 q1=0.14q2=0.27 q1=0.18q2=0.24 周期/s 87 113 164 211 主相位绿信比 0.49 0.56 0.59 0.52 次相位绿信比 0.42 0.37 0.36 0.44 
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[1] 王秋平, 谭学龙, 张生瑞. 城市单点交叉口信号配时优化[J]. 交通运输工程学报, 2006, 6(2): 60-64. http://transport.chd.edu.cn/article/id/200602014WANG Qiu-ping, TAN Xue-long, ZHANG Sheng-rui. Sig-nal timing opti mization of urban single-point intersections[J]. Journal of Traffic and Transportation Engineering, 2006, 6(2): 60-64. (in Chinese) http://transport.chd.edu.cn/article/id/200602014 [2] YAN Li, FAN Xiao-ping. Design of signal controllers for urban intersections based on fuzzy logic and weightings[C]∥IEEE. Proceedings of the 6thIEEEInternational Conference on Intelli gent Transportation Systems. Shanghai: IEEE, 2003: 867-871. [3] 赵忠杰, 刘小强, 谢光秋. 单交通路口变相位变周期信号控制[J]. 长安大学学报: 自然科学版, 2005, 25(6): 70-72. doi: 10.3321/j.issn:1671-8879.2005.06.017ZHAO Zhong-jie, LIU Xiao-qiang, XIE Guang-qiu. Changeable Phases and changeable periods signal control at traffic intersection[J]. Journal of Chang an University: Natural Science Edition, 2005, 25(6): 70-72. (in Chinese) doi: 10.3321/j.issn:1671-8879.2005.06.017 [4] 许伦辉, 习利安, 衷路生. 孤立交叉口多相位自适应模糊控制及其神经网络实现[J]. 中国公路学报, 2005, 18(3): 90-93. doi: 10.3321/j.issn:1001-7372.2005.03.018XU Lun-hui, XI Li-an, ZHONG Lu-sheng. Adaptive multiphase fuzzy control of single intersection based on neural network[J]. China Journal of Highway and Transport, 2005, 18(3): 90-93. (in Chinese) doi: 10.3321/j.issn:1001-7372.2005.03.018 [5] 臧利林, 贾磊, 林忠琴. 基于模糊逻辑的交通信号控制与仿真研究[J]. 公路交通科技, 2006, 23(4): 124-127. https://www.cnki.com.cn/Article/CJFDTOTAL-GLJK200604029.htmZANG Li-lin, JI A Lei, LI N Zhong-qin. Research of traffic signal control and si mulation based onfuzzylogic[J]. Journal of Highway and Transportation Research and Development, 2006, 23(4): 124-127. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GLJK200604029.htm [6] 刘小明, 王飞跃. 基于Agent的单路口交通流控制的研究[J]. 系统仿真学报, 2004, 16(4): 853-855. doi: 10.3969/j.issn.1004-731X.2004.04.072LI U Xiao-ming, WANG Fei-yue. Study of intersection traffic flow control on the basis of agents[J]. Journal of SystemSi mulation, 2004, 16(4): 853-855. (in Chinese) doi: 10.3969/j.issn.1004-731X.2004.04.072 [7] 陈阳舟, 张辉, 杨玉珍, 等. 基于Q学习的Agent在单路口交通控制中的应用[J]. 公路交通科技, 2007, 24(5): 117-120. https://www.cnki.com.cn/Article/CJFDTOTAL-GLJK200705026.htmCHEN Yang-zhou, ZHANG Hui, YANG Yu-zhen, et al. Application of agent-based Q-learning in the traffic flow control of single intersection[J]. Journal of Highway and Transportation Research and Development, 2007, 24(5): 117-120. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GLJK200705026.htm [8] 陈静, 黄崇超. 交通信号实时优化模型的算法研究[J]. 武汉大学学报: 工学版, 2006, 39(6): 92-95. https://www.cnki.com.cn/Article/CJFDTOTAL-WSDD200606023.htmCHENJing, HUANG Chong-chao. Solution method to a newmodel for realtime traffic signal timing[J]. Engineering Journalof Wuhan University, 2006, 39(6): 92-95. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-WSDD200606023.htm [9] 徐勋倩, 黄卫. 单路口交通信号多相位实时控制模型及其算法[J]. 控制理论与应用, 2005, 22(3): 413-416. https://www.cnki.com.cn/Article/CJFDTOTAL-KZLY200503014.htmXU Xun-qian, HUANG Wei. Multiphase traffic signal realtime controlling model of isolated intersection and its algorithm[J]. Control Theory and Applications, 2005, 22(3): 413-416. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-KZLY200503014.htm [10] 贺国光, 崔岩, 王桂珠. 单路口交通流控制动态响应的仿真研究[J]. 系统工程学报, 2005, 20(3): 323-329. https://www.cnki.com.cn/Article/CJFDTOTAL-XTGC200503019.htmHE Guo-guang, CUI Yan, WANG Gui-zhu. Simulation study on dynamic response for an intersection[J]. Journal of Systems Engineering, 2005, 20(3): 323-329. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-XTGC200503019.htm [11] 曹家年, 潘鑫, 岳士举. 基于车队D-Q模型的交通信号控制算法[J]. 哈尔滨工程大学学报, 2007, 28(1): 97-101. https://www.cnki.com.cn/Article/CJFDTOTAL-HEBG200701020.htmCAOJia-nian, PAN Xin, YUE Shi-ju. Algorithm of traffic signal control based on the D-Q vehicle platoon model[J]. Journal of Harbin Engineering University, 2007, 28(1): 97-101. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-HEBG200701020.htm -
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