基于模糊控制的城市交通信号控制系统的研究

【作者】 杨晓芳；

【导师】 苏诗琳；

【作者基本信息】 长安大学 ， 交通信息工程及控制， 2003， 硕士

【摘要】 随着城市交通的发展以及计算机、通信和自动化技术在交通中的应用，近年来人们开始借鉴新的理论和技术研究交叉口的交通控制技术。这些研究对于提高城市交通控制系统的控制效果具有现实的意义。本论文针对当前交通控制系统中存在的问题，提出了基于模糊控制的城市交通信号控制系统。针对交叉口交通流运行的高度复杂性和随机性，采用了模糊控制技术，不需要建立精确的数学模型，能够适应交叉口的实时控制。采用的模糊控制器输入参数是排队长度，它具有易于测量，误差小的特点。本论文详细进行了单点模糊控制器的设计。本论文还研究了两级线协调控制，采用两级模糊控制，减少了模糊控制系统的输入量，降低了控制规则的复杂性。该方法具有简单、实用的特点，对于提高交通控制系统的控制效果具有重大的现实意义。更多还原

【Abstract】 With the development of the urban traffic and the wide use of the technologies of communication, computer and automation on transportation, people begin to apply new theories and technologies on the traffic control . It is very important to improve the control effect of the urban traffic control system. In allusion to the problems in the traffic control system, the article present the urban traffic signal control system based on fuzzy control. To the high complexity and randomicity of the traffic flow, we can adopt fuzzy control technology to adapt the real-time control, without setting up an accurate math model. The input parameter of fuzzy controller is arranged according to queue length. It is prone to be measured and has the smallest error.The article designs the single-intersection fuzzy controller in detail. And it also studies the Coordinated Systems. The two-staged fuzzy controller can decrease the input amount of the fuzzy controller and reduce the complexity of the fuzzy rules. This method is very simple and practicable. It is realistic to improve the control effect of the traffic control system.更多还原