| 城市交通线控系统相位差优化方法 |
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| 引用本文： | 吕斌,牛惠民.城市交通线控系统相位差优化方法[J].交通运输工程学报,2011(4). |
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| 作者姓名： | 吕斌 牛惠民 |
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| 作者单位： | 兰州交通大学交通运输学院; |
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| 基金项目： | 国家自然科学基金项目(50968009); 高等学校博士学科点专项科研基金项目(20096204110003) |
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| 摘 要： | 根据路段行程车速的随机分布特征,分析了已有线控系统相位差优化方法的局限性。以路段行程时间、车辆延误和排队长度为评价指标,利用信息熵理论和多属性综合决策方法设计了线控系统相位差优化算法,并进行了仿真计算。仿真结果表明:当路段行程车速的方差从5 km.h-1增大到10 km.h-1后,由西向东车流的行程时间、车辆延误和排队长度分别从98.4 s、13.5 s.pcu-1和9.1 pcu增大到115.5 s、15.9 s.pcu-1和12.3 pcu,由东向西车流的行程时间、车辆延误和排队长度分别从99.4 s、13.5 s.pcu-1和9.2 pcu增大到108.7 s、14.3 s.pcu-1和10.8 pcu。可见,路段行程车速的随机分布特性对相位差的设置有显著影响,利用本文建立的模型可得到最优相位差。
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| 关 键 词： | 交通信号控制 相位差 路段行程时间 排队长度 车辆延误 随机仿真 信息熵 |
Optimization method of phase difference for urban traffic arterial control system |
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| LU Bin,NIU Hui-min.Optimization method of phase difference for urban traffic arterial control system[J].Journal of Traffic and Transportation Engineering,2011(4). |
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| Authors: | LU Bin NIU Hui-min |
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| Institution: | LU Bin,NIU Hui-min(School of Traffic and Transportation,Lanzhou Jiaotong University,Lanzhou 730070,Gansu,China) |
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| Abstract: | Based on the random distribution characteristic of link travel speed,the limitations of phase difference optimization methods for the existed arterial control systems were analyzed.Link travel time,vehicle delay and queue length were taken as evaluation indexes,the phase difference optimization algorithm of arterial control system was designed by using information entropy theory and multi-attribute synthetic decision method,and a simulation calculation was carried out.Calculation result indicates that when ... |
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| Keywords: | traffic signal control phase difference link travel time quene length vehicle delay stochastic simulation information entropy |
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