摘要： 提出了两种基于模糊控制的多相位交叉口交通信号控制方法，并对它们进行了分析比较。为减少模糊控制器输入量，降低控制器设计的复杂度，引入了阻塞参数，此参数融合了车辆密度和平均速度二者的信息，能比较准确地反映车道的阻塞程度。

关键词: 模糊控制；阻塞参数；多相位

Abstract: This paper puts forward two kinds of methods to control traffic signals in cross based on fuzzy control and contrast sthem by analyzing.In order to cut the number of fuzzy controller’s inputs and decrease complexity of designing fuzzy controller, it introduces congestion parameter,which contains information of car density and average velocity, also can reflect the degree of congestion on roadway truly

Key words: Fuzzy control; Congestion parameter; Multi-phase