干线交叉口交通信号联动控制

发布时间：2018-04-27 01:15

本文选题：联动控制 + 交叉口　；参考：《合肥工业大学》2014年硕士论文

【摘要】：随着我国综合国力的增强，人们生活水平的提高，汽车数量迅速增长。汽车给人们生活带来便利的同时，也给我们带来了新的问题——交通问题。我国现在大中城市正面临着严峻的交通问题，能否高效合理地解决这些交通问题，直接关系到城市的长远发展。一味地通过大规模的增加道路等基础设施建设来解决交通问题，是不科学也是不现实的。通过综合运用交通信号控制技术，对交通信号的配时进行优化控制等措施，来提高现有道路通行能力是解决交通问题的有效办法。城市干线道路是城市交通重要组成部分，有着不可替代的作用。因此，对城市干线交通信号联动控制研究，是解决我国当前各主要城市面临交通问题的有效途径之一。本文以合肥市黄山路为研究对象,通过干线道路交叉口交通流波动特性分析，，诊断交叉口交通信号配时的合理性。在此基础上，建立了以车辆总延误最小为优化目标的干线交叉口交通信号配时优化模型。交叉口的延误由干线协调方向车辆延误和支路方向车辆延误两部分组成，本模型综合考虑了支路方向车辆延误和支路方向左转弯车辆对干线车队的影响，避免了传统绿波设计的不足。利用遗传算法对干线各交叉口的交通信号进行优化求解，通过控制系统周期时长、各交叉口的绿信比和相邻交叉口间的相位差等参数获得最佳优化方案。最后将仿真优化结果与当前黄山路干线配时方案进行对比和分析，结果表明优化后的配时方案可以明显改善干线车辆的总延误。
[Abstract]:With the enhancement of our country's comprehensive national strength and the improvement of people's living standard, the number of cars is increasing rapidly. Automobile brings convenience to people's life, at the same time, it also brings us a new problem-traffic problem. Nowadays, large and medium-sized cities in China are facing severe traffic problems. Whether we can solve these traffic problems efficiently and reasonably is directly related to the long-term development of cities. It is unscientific and unrealistic to blindly solve traffic problems by increasing road and other infrastructure construction on a large scale. It is an effective method to solve the traffic problem by synthetically applying the traffic signal control technology to optimize the traffic signal timing control and so on to improve the existing road capacity. As an important part of urban traffic, urban trunk roads play an irreplaceable role. Therefore, the study of traffic signal linkage control in urban trunk lines is one of the effective ways to solve the traffic problems faced by major cities in China. In this paper, Huangshan Road in Hefei City is taken as the research object, and the rationality of traffic signal timing at intersection is diagnosed by analyzing the fluctuation characteristics of traffic flow at the intersection of trunk road. On this basis, a traffic signal timing optimization model for trunk road intersection with the minimum vehicle delay as the optimization objective is established. The delay at the intersection is composed of two parts: the vehicle delay in the trunk line coordination direction and the vehicle delay in the branch direction. This model considers the influence of the traffic delay in the branch road direction and the left-turn vehicle in the branch road direction on the trunk line vehicle fleet. The shortage of traditional green wave design is avoided. Genetic algorithm is used to optimize the traffic signal of each intersection in the trunk line. The optimal scheme is obtained by controlling the system cycle time, the green signal ratio of each intersection and the phase difference between adjacent intersections. Finally, the simulation results are compared with the current Huangshan Road trunk line timing scheme. The results show that the optimized timing scheme can significantly improve the total vehicle delay.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491.54

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