摘要本文以城市交通中的单交叉口交通信号灯设计为背景,结合模糊控制理论,建立了基于模糊控制理论的交通信号控制器的设计方案。针对交叉路口车辆密集,路况复杂,定时控制方案不灵活等问题,对传统的智能交通系统进行了改进,减少车辆延误率,以提高整体运行效率。设计主体思想是通过感应式检测器获取车流量信息,建立双输入单输出二维模糊控制器,根据实际交通经验确定输入输出量及其变化范围,利用马丹尼法解模糊,设计离线查询模糊控制规则表,完成解模糊过程。最后利用MATLAB进行仿真,仿真结果表明,交通信号的模糊控制得到的延误比定时控制的延误要小,有利于提高交通效率。65020
毕业论文关键词 单交叉口 模糊控制 MATLAB仿真 延误
毕业设计说明书(论文)外文摘要
Title Design and Simulation of Single Intersection Traffic Signal Fuzzy Controller
Abstract
In this paper, a single-city traffic intersection traffic signal design for background, the traffic signal controller design is based on the fuzzy control theory. The traffic of the crossing is so heavy and timing control scheme is not flexible. The intelligent traffic system has been improved to reduce vehicle delay rate and improve overall operating efficiency camparing with the traditional traffic system. The main idea of this design is to get traffic information through the inductive sensor, establish the fuzzy controller of double-input and single-output,whose changing range is empirically determined according to the actual traffic situation .We use the method of Ma Danni to defuzzy and design offline fuzzy control rules. The whole defuzzy process is completed. Finally, the result of MATLAB simulation shows that the fuzzy control of traffic signal reduce the delay camparing with the method of timing control and it will be good for improving the efficiency of the traffic.
Keywords the single intersection Fuzzy control MATLAB simulation Delay
目 次
1 绪论 1
1.1 研究背景 1
1.2 国外研究现状 2
1.3 论文内容及结构安排 3
2 城市交通信号控制系统 5
2.1 交通信号控制术语 5
2.2 交通信号控制方式 6
2.3 控制效果评价指标 7
3 模糊控制 10
3.1 模糊控制系统分类 10
3.2 模糊控制系统组成结构 11
3.3 模糊控制系统在交通控制中的设计与应用 13
4 单交叉口交通信号灯模糊控制器设计 16
4.1 东西第一相位南北第二相位的双相位选择模型 16
4.2 交叉方向车辆数目差为输入量,绿灯延时为输出量 17
4.3 控制器相关函数设计 18
4.4 模糊控制系统运行流程 22
4.5 软件仿真检验与效果分析 22
4.6 设计优化与参数改进的思考