交通信号灯控制系统建模与仿真研究
发布时间：2018-10-21 11:19
【摘要】：城市交通信号控制系统是提高城市交通运行效率的重要途径之一，也是解决交通流拥堵、保证交通安全的重要手段之一。而交通信号的相位设计及配时方案的设计则是交通信号控制系统设计的核心部分。本论文在分析城市交通及其解决办法的基础之上，以交叉口为研究对象，对城市道路稀疏交叉口的信号相位设计及相位配时进行了深入的研究。本论文的主要工作如下： （1）在介绍城市交通信号控制系统发展历史的基础上，分析了交通信号控制系统的研究现状，，并对当前信号控制系统的控制机制及优化方法进行了分析。 （2）针对城市道路中交通流比较稀疏的交叉口，分析了定时控制方案中所存在的问题，并就存在的问题提出了基于车辆驱动的信号相位配时方案及基于车辆分组的信号配时方案的优化方案，并采用悲观准则对信号配时方案进行求解。 （3）基于VC++6.0开发工具，设计并实现了基于车辆分组信号配时方案的计算机仿真系统，并给出了该信号配时方案的性能分析，验证了基于车辆分组的信号配时方案能够有效的降低非饱和交叉口车辆的平均延误时间。 （4）采用赋色Petri网建立了城市交通信号控制的CPN模型，实现了两交叉口的交通信号控制系统的协调控制，并研究了各路段车辆的到达时间随相位差的变化规律，验证了通过调整当前信号灯的状态，控制车辆的通行与放行，可以有效的防止交叉口交通的拥堵。
[Abstract]:Urban traffic signal control system is one of the important ways to improve the efficiency of urban traffic operation, and also one of the important means to solve traffic congestion and ensure traffic safety. The phase design of traffic signal and the design of timing scheme are the core of traffic signal control system design. Based on the analysis of urban traffic and its solutions, this paper studies the signal phase design and phase timing of urban road sparse intersection. The main work of this paper is as follows: (1) based on the introduction of the development history of urban traffic signal control system, the research status of traffic signal control system is analyzed. The control mechanism and optimization methods of the current signal control system are analyzed. (2) aiming at the intersection with sparse traffic flow in urban roads, the problems in the timing control scheme are analyzed. At the same time, the signal phase timing scheme based on vehicle driving and the optimization scheme of signal timing scheme based on vehicle grouping are put forward. The pessimistic criterion is used to solve the signal timing scheme. (3) based on the VC 6.0 development tool, a computer simulation system based on the vehicle packet signal timing scheme is designed and implemented. The performance analysis of the signal timing scheme is also given. It is proved that the signal timing scheme based on vehicle grouping can effectively reduce the average delay time of vehicles at unsaturated intersections. (4) the CPN model of urban traffic signal control is established using colored Petri net. The coordinated control of traffic signal control system at two intersections is realized, and the variation law of vehicle arrival time with phase difference in each section is studied. It is verified that the traffic and release of vehicles can be controlled by adjusting the current state of signal lights. Can effectively prevent traffic congestion at intersections.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491.54
本文编号：2284944
[Abstract]:Urban traffic signal control system is one of the important ways to improve the efficiency of urban traffic operation, and also one of the important means to solve traffic congestion and ensure traffic safety. The phase design of traffic signal and the design of timing scheme are the core of traffic signal control system design. Based on the analysis of urban traffic and its solutions, this paper studies the signal phase design and phase timing of urban road sparse intersection. The main work of this paper is as follows: (1) based on the introduction of the development history of urban traffic signal control system, the research status of traffic signal control system is analyzed. The control mechanism and optimization methods of the current signal control system are analyzed. (2) aiming at the intersection with sparse traffic flow in urban roads, the problems in the timing control scheme are analyzed. At the same time, the signal phase timing scheme based on vehicle driving and the optimization scheme of signal timing scheme based on vehicle grouping are put forward. The pessimistic criterion is used to solve the signal timing scheme. (3) based on the VC 6.0 development tool, a computer simulation system based on the vehicle packet signal timing scheme is designed and implemented. The performance analysis of the signal timing scheme is also given. It is proved that the signal timing scheme based on vehicle grouping can effectively reduce the average delay time of vehicles at unsaturated intersections. (4) the CPN model of urban traffic signal control is established using colored Petri net. The coordinated control of traffic signal control system at two intersections is realized, and the variation law of vehicle arrival time with phase difference in each section is studied. It is verified that the traffic and release of vehicles can be controlled by adjusting the current state of signal lights. Can effectively prevent traffic congestion at intersections.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491.54
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