基于两级模糊控制的交叉口多相位控制

针对城市交叉口存在关键车流与非关键车流相互干扰的特点，基于两级模糊控制的思想，研究了交叉口多相位两级模糊控制器的设计思想及设计方法，给出了基本绿灯延长时间和附加绿灯延长时间的算法。仿真结果表明，设计的两级模糊控制器能有效减少车辆通过交叉口的总延误时间，适用于多车流的孤立交叉口多相位信号控制。

Research on the Multi-phase Control of Urban Intersection based on Two Layer Fuzzy Controller

Considering the features that there are disturbances among the multi indirection vehicle flows in urban single intersections, the concepts of key flow and subordinate flow are defined. Based on the theory of fuzzy logic control, the design ideal and method for a kind of two layer fuzzy controller with multi-phase for urban single intersection is put forwarded. The algorithm for determining the adder of basic green time and appended green time depending on the key flow and the subordinate flow is obtained, respectively, and the control static of two layer fuzzy controller for urban single intersection is given. Finally, results of simulation show that the total delay time of all the vehicles through urban intersection can be lessen largely by using the fuzzy controller, which is suitable for the signal control of single intersection with multi-flow.