交通信號燈控制系統(tǒng)建模與仿真研究
發(fā)布時間：2018-10-21 11:19
【摘要】：城市交通信號控制系統(tǒng)是提高城市交通運行效率的重要途徑之一，也是解決交通流擁堵、保證交通安全的重要手段之一。而交通信號的相位設計及配時方案的設計則是交通信號控制系統(tǒng)設計的核心部分。本論文在分析城市交通及其解決辦法的基礎之上，以交叉口為研究對象，對城市道路稀疏交叉口的信號相位設計及相位配時進行了深入的研究。本論文的主要工作如下： （1）在介紹城市交通信號控制系統(tǒng)發(fā)展歷史的基礎上，分析了交通信號控制系統(tǒng)的研究現(xiàn)狀，，并對當前信號控制系統(tǒng)的控制機制及優(yōu)化方法進行了分析。 （2）針對城市道路中交通流比較稀疏的交叉口，分析了定時控制方案中所存在的問題，并就存在的問題提出了基于車輛驅動的信號相位配時方案及基于車輛分組的信號配時方案的優(yōu)化方案，并采用悲觀準則對信號配時方案進行求解。 （3）基于VC++6.0開發(fā)工具，設計并實現(xiàn)了基于車輛分組信號配時方案的計算機仿真系統(tǒng)，并給出了該信號配時方案的性能分析，驗證了基于車輛分組的信號配時方案能夠有效的降低非飽和交叉口車輛的平均延誤時間。 （4）采用賦色Petri網(wǎng)建立了城市交通信號控制的CPN模型，實現(xiàn)了兩交叉口的交通信號控制系統(tǒng)的協(xié)調控制，并研究了各路段車輛的到達時間隨相位差的變化規(guī)律，驗證了通過調整當前信號燈的狀態(tài)，控制車輛的通行與放行，可以有效的防止交叉口交通的擁堵。
[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.
【學位授予單位】：長安大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U491.54
本文編號：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.
【學位授予單位】：長安大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U491.54
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本文編號：2284944
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