The invention discloses an expressway entrance ramp confluence area double-layer optimization control method and system, and the method comprises the steps: determining an optimal combination sequence through employing a graph-based shortest path algorithm according to the initial state information of vehicles entering an expressway entrance ramp confluence control area, and distributing the arrival time of each vehicle; according to the distributed optimal combined sequence and the arrival time of each vehicle, trajectory planning is carried out and sent to each vehicle, the determination process of the combined sequence is described by using a directed graph, and the optimal combined sequence is determined by using an improved shortest path algorithm with predicted vehicle driving delay as an edge weight. According to unconstrained Hamiltonian analysis, a time adjustment algorithm is designed, it is ensured that the vehicles meet speed and acceleration constraints, the method is safer and more practical, an optimal prediction window algorithm is designed and found through the Pareto optimal principle, it is ensured that all the vehicles meet the maximum speed constraints, and the maximum passing efficiency is ensured; and it is ensured that the vehicle meets the speed constraint and the fuel consumption is minimized.

    本发明公开了一种快速路入口匝道合流区双层优化控制方法及系统,根据进入快速路入口匝道合流控制区域车辆的初始状态信息,使用基于图的最短路径算法确定最优合并序列并分配各车辆到达时间,根据分配的最优合并序列和各车辆到达时间,进行轨迹规划并发送至各车辆,使用有向图描述合并序列的确定过程,以预测车辆行驶延迟为边权重的改进最短路径算法,确定最优合并序列。根据无约束哈密顿分析,设计时间调整算法,保证车辆满足速度和加速度约束,更加安全实用,利用帕累托最优原理设计寻找最优预测窗口算法,保证了所有车辆满足最大速度约束,保证最大化通行效率,确保车辆满足速度约束和最小化燃油消耗。


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    Title :

    Expressway entrance ramp confluence area double-layer optimization control method and system


    Additional title:

    一种快速路入口匝道合流区双层优化控制方法及系统


    Contributors:
    MIN HAIGEN (author) / XIA SEN (author) / WU XIA (author) / ZHAO XIANGMU (author) / ZHAO YONGWEI (author) / LI XIAOCHI (author) / XU ZHIGANG (author) / LIU ZHANWEN (author) / ZHANG LICHENG (author) / JIANG YUANDE (author)

    Publication date :

    2023-08-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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