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城市交通线控系统相位差优化方法

, PP. 103-107

Keywords: 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

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Abstract:

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5km.h-1增大到10km.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98.4s、13.5s.pcu-1和9.1pcu增大到115.5s、15.9s.pcu-1和12.3pcu,由东向西车流的行程时间、车辆延误和排队长度分别从99.4s、13.5s.pcu-1和9.2pcu增大到108.7s、14.3s.pcu-1和10.8pcu。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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