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交叉口定周期信号控制多目标优化方法

, PP. 82-88

Keywords: 交通工程,交叉口,多目标相容优化,信号控制,有效性,敏感性

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Abstract:

?为了克服以往采用加权组合方法将多目标优化模型转为单目标优化模型进行求解的弊端,以非饱和交叉口为研究对象建立了定周期信号控制参数的多目标优化模型,并以非支配排序遗传算法(Non-dominatedSortingGeneticAlgorithmII,NSGAII)为基础建立了直接求解单个交叉口交通信号多目标控制模型的相容优化方法。最后通过实例分析了延误、停车率、排队长度等常用交通信号控制目标的有效性和对控制参数的敏感性。研究结果表明:与单目标优化方法相比,多目标相容优化方法更能减少车辆在交叉口上的停车延误和排队长度;与加权组合方法相比,多目标相容优化方法能获得更优的综合交通效益。

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