交通信号自适应模糊控制器的设计及稳定性分析

针对城市交通路口的信号控制,提出一种自适应模糊控制器,并对其稳定性进行分析.通过控制器给出路口实时信号配时,根据红灯相位的等候车辆平均损失和绿灯相位释放车辆的平均增益,给出了模糊控制器的自适应算法,以实时修正其模糊规则.在自适应模糊控制器的稳定性分析中,采用模糊控制系统闭环模型的模糊关系矩阵,证明在路口车辆随机产生的情况下,模糊控制系统是稳定的.仿真结果表明,自适应模糊控制器比全感应控制器、简单模糊控制器更能适应路口交通流的变化,极大地改善了系统性能.

Design and stability analysis of the adaptive fuzzy controller for traffic signal control

An adaptive fuzzy controller is developed for urban traffic signal control, and its stability analysis is also analyzed. The controller gives the real-time signal timing at an intersection. and then the average losses of vehicles waited in red phase and the average profits of vehicles cleared in green phase respectively according to the current traffic conditions are calculated. The adaptive fuzzy controller develops the adaptive algorithm for the controller to modify the fuzzy rules in real-time. The fuzzy relation matrixes of the closed-loop model is used to prove the stability of the fuzzy control system in such a traffic condition that the vehicles arrive at the intersection randomly. The simulation shows that, with the comparison with the full-actuated controller and the simple fuzzy controller, the proposed one is more successfully to response the traffic conditions.