基于模糊理论的单交叉路口变相位两级控制研究

A Study on twe-stage controller of the variable phase based on fuzzy logic theory for single intersection

本文用模糊控制方法对单交叉路口的交通信号进行控制,提出一种根据交通流量的大小决定相位个数,更有效提高车辆的通行效率。重点讨论两级模糊控制器的设计,并给出该模糊控制系统的总体设计方案。两级模糊控制能有效减少模糊规则数,易于提取模糊规则,适合于交通状况复杂的城市交叉口的交通控制。本方法实现了相位顺序、绿信比、周期均随着交通条件的变化而自适应变化。

The traffic signal control with fuzzy control method in isolated intersection is discussed in this article, and according to transportation flux to determine the number of phase, a fuzzy control method is proposed, which increases the efficiency of vehicle＇s passing through intersections. With the emphasis placed on the design of the two-stage fuzzy controller, the scheme of the fuzzy control system design is given. The two-stage fuzzy controller can effectively decrease the number of fuzzy rules and is easy to acquire fuzzy rules and is very suitable to complex urban traffic intersection control. With the traffic situation changed, the method makes the phase order, the ratio of green signal and the cycle adaptively change.