【摘要】 城市干道是城市交通的主要载体,干道的畅通对提高城市道路的通行能力、缓解城市的交通拥挤起着重要的作用。城市交通系统是一种对象不确定的,结构十分复杂的大系统。城市道路交通控制主要是对交通信号的控制,针对对象的不确定性和复杂性,文章从交通信号控制的角度,对城市干道交通信号控制策略及其控制优化的参数(周期时长、绿信比、相位差)进行分析,并结合合肥市芜湖路的交通状况采用模糊控制的方法实现城市交通干道的优化协调控制。通过Vissim仿真,对芜湖路分别采用模糊协调控制方案、传统数解法协调控制方案及单点控制方案进行比较,结果表明模糊协调控制方案明显优于其他2种方法。更多还原

【Abstract】 Urban trunk road is the main carrier of urban traffic.The unimpeded trunk road plays an important role in improving the capacity of urban road and relieving urban traffic congestion.Urban transportation system is a system with uncertain object and complex structure.The main traffic control mode of urban roadway is the control of traffic signal.From the perspective of traffic signal control,the control strategy of urban trunk road traffic signal and its optimal parameters(cycle length,split,and offset) were analyzed to deal with the uncertainty and complexities of the system.The optimum control of urban trunk highway was realized based on fuzzy control with the combination of the traffic situation in Wuhu Road,Hefei City.The result was compared through fuzzy coordination control scheme,traditional algebraic coordination scheme,and single point control scheme.The result shows that the fuzzy control scheme is evidently much better than the other two schemes.更多还原