基于SFSTFC的单路口交通信号控制

A Traffic Signal Control Algorithm Based on Scale Factor Self-tuning Fuzzy Controller for Single Intersection

针对城市单路口的交通信号控制问题,提出了一种基于比例因子自调整模糊控制器的控制方法。首先分析了比例因子对模糊控制系统性能的影响;然后,根据当前路口交通流红灯相位的损失指数和绿灯相位的增益指数,给出了比例因子自调整模糊算法,可依据路口动态车流信息在线调整比例因子;最后,基于提出的比例因子自调整模糊控制器,给出了一种单路口交通信号控制策略。仿真结果表明,相对于定时控制,以及普通模糊控制,比例因子自调整方法能够有效地降低路口平均车辆延误,提高了交通信号控制系统的控制精度。

Aiming at the urban single intersection traffic signal control problem,a traffic signal control algorithm based on scale factor self-tuning fuzzy controller is proposed. Firstly,the influence of scale factor on the performance of fuzzy control system is analyzed. Then,according to the loss index of red light phase and the gain index of green light phase of the current intersection traffic flow information,the self-tuning fuzzy algorithm of scale factor is proposed,which can adjust the scale factor online according to the intersection dynamic traffic information. At last,base on the proposed self-tuning fuzzy controller of scale factor,a single intersection traffic signal control strategy is obtained. The simulation results show that,compared with the timing control and ordinary fuzzy control,the proposed method in this paper can effectively reduce the intersection average vehicle delay and improve the control precision of the traffic signal control system.