考虑滞站调度的有轨电车信号优先控制方法研究

发布时间：2018-02-21 08:37

本文关键词： 有轨电车信号优先滞站调度组合控制策略延误模型　出处：《苏州科技大学》2017年硕士论文　论文类型：学位论文

【摘要】：公共交通是缓解城市交通压力的重要途径。现代有轨电车作为城市公共交通的一种,经过全面的技术升级,近年来又逐渐受到人们的青睐。目前,我国很多城市都在规划、建设有轨电车系统。但是,多数有轨电车的线路是布设在道路平面上的,其在交叉口信号控制方式的选择对确保有轨电车的高效运行,提高运营服务水平,降低交叉口的整体延误具有重要影响。本文首先叙述了有轨电车的运行特性和运行的交通条件,同时对有轨电车的信号控制流程和信号优先控制系统做了简要的概述。在有轨电车采取主动式信号优先控制策略的情况下,以交叉口各进口道的车辆延误为基础,建立了考虑所有人员的延误和人均延误损失的交叉口整体效益函数。并充分考虑有轨电车离站时刻和交叉口信号优先方案间的内在联系,建立了一种组合控制策略。即将站台控制模式(即刻离站或滞站调度)作为一种优先反应的控制方式,分析得出了各组合控制策略(即刻离站、即刻离站+绿灯延长、即刻离站+相位插入、即刻离站+相位旋转、即刻离站+绿灯提前)在交叉口的延误模型,并给出了交叉口整体效益函数的计算公式。比较各组合控制策略和有轨电车滞站调度的效益值大小,并选择效益最优的控制策略为有轨电车提供优先权。该策略在使有轨电车获得优先权、发挥其最佳运营效益的同时,也降低了对社会其他车辆的影响,使交叉口的延误损失降至最低。同时降低了有轨电车在站台停靠时间这一不确定性因素对有轨电车信号优先系统和调度系统的影响。本文最后以苏州市有轨电车一号线金枫路与何山路交叉口为例,对各组合控制策略的效益函数进行实例应用,分析了有轨电车在信号区间的任意时刻到达交叉口,组合控制策略的选择情况。并以效益函数最小为目标函数对信号配时进行了优化。
[Abstract]:Public transportation is an important way to relieve the pressure of urban traffic. As a kind of urban public transportation, modern tram has been gradually favored by people in recent years after comprehensive technological upgrading. At present, many cities in our country are planning. However, most tram lines are located on the road plane, and the choice of signal control mode at intersections can ensure the efficient operation of trams and improve the level of operation and service. It is important to reduce the overall delay at intersections. This paper first describes the operation characteristics and traffic conditions of trams. At the same time, the signal control flow and signal priority control system of tram are briefly summarized. Having established an overall benefit function at intersections that takes into account delays for all personnel and loss of delay per person, and taking fully into account the inherent links between the tram departure time and the signal priority programme at the intersection, In this paper, a combined control strategy is established, which means that the platform control mode (immediate or delayed station dispatching) is considered as a priority response control mode, and the combined control strategy (instant exit, instant exit green light extension) is obtained. The delay model of instant off-station phase insertion, instant off-station phase rotation, instant exit green light advance) at the intersection, The calculation formula of the whole benefit function of intersection is given, and the value of the combined control strategy and the benefit value of tram stop station dispatching are compared. The optimal control strategy is chosen to provide priority for trams. This strategy not only gives priority to trams, but also reduces the impact on other vehicles in society. The delay loss at the intersection is minimized and the uncertain factor of the tram stop time on the platform is reduced. The signal priority system and the dispatching system of the tram are also reduced. Finally, the paper uses Suzhou tram as the example. For example, the intersection of Jinfeng Road and he Shan Road on Line 1, The benefit function of the combined control strategy is applied to analyze the tram arriving at the intersection at any time in the signal interval. The selection of combinatorial control strategy and the optimization of signal timing with the minimum benefit function as the objective function are also presented.
【学位授予单位】：苏州科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U492.433;U491.54

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