高速公路实时交通流模糊逻辑优化控制系统设计

Design of fuzzy logic optimization control system for expressway real-time traffic flow

摘要:

高速公路交通流特征复杂多变,受到诸多影响因素的共同作用,如天气、道路状况、车辆类型等等。因此,如何获取交通流逻辑控制条件并实现精准调节难度较大。为此,本研究设计新的高速公路实时交通流模糊逻辑优化控制系统。对于系统的硬件部分,设计车流控制模块、无线传输车载终端、实时交通流逻辑调度模块、模糊控制器模块,并确定各个模块之间实时连接关系。对于系统的软件部分,求解交通流逻辑控制条件,联合高速公路实时通行相位条件,调节模糊控制器,并根据高速公路交通路网模型,推导交通流优化控制条件的求解表达式,完成高速公路实时交通流模糊逻辑优化控制系统的设计。实验结果表明,本系统可以解决逻辑协调错误的问题,且能够有效控制高速公路车流量。

Abstract:

The characteristics of expressway traffic flow are complex and changeable, which are influenced by many factors, such as weather, road conditions, vehicle types and so on. Therefore, it is difficult to obtain the traffic flow logic control conditions and achieve accurate adjustment. Therefore, a new fuzzy logic optimization control system for expressway real-time traffic flow is designed in this paper. For the hardware part of the system, design the traffic flow control module, wireless transmission vehicle terminal, real-time traffic flow logic scheduling module, fuzzy controller module, and determine the real-time connection between each module. As for the software part of the system, the logic control conditions of traffic flow are solved, the real-time traffic phase conditions of expressways are combined, the fuzzy controller is adjusted, and the expression of the optimization control conditions of traffic flow is derived according to the traffic network model of expressways, and the design of the fuzzy logic optimization control system of real-time traffic flow of expressways is completed. The experimental results show that the system can solve the problem of logic coordination error, and can effectively control the highway traffic flow.