基于PLC的交通十字路口模糊控制  

Fuzzy control at the traffic crossroad based on PLC

作　　者：丁金婷[1] 吴国忠[2] 

机构地区：[1]浙江大学城市学院,杭州310015 [2]浙江大学电气工程学院,杭州310027

出　　处：《仪器仪表学报》2006年第z3期1927-1930,共4页Chinese Journal of Scientific Instrument

摘　　要：由于交通流量是时变的、非线性的,具有较大的随机性,并且很难建立精确的数学模型,根据前后相流量来决定信号灯配时的模糊控制系统的理论研究成果,用PLC实现单个十字路口交通信号灯模糊控制的方法,以单个十字路口4相位交通灯为例,把西门子S7—200系列PLC作为一个模糊控制器,采用梯形图编程,开发了一种交通模糊控制系统,解决了交通流量不均衡、不稳定带来的问题,根据交通状况实时调整交通信号灯以达到对交通实时控制的能力,缓解局部交通高峰尤其有效。Because the traffic flow is time changes non-linearly, has the big randomness, and is very difficult to establish the precise mathematical model, according to the around current capacity decided the signal light timing the fuzzy control system fundamental research achievement, realizes the single intersection street-traffic control lights fuzzy control method with PLC, take the single intersection 4 phases traffic lights as the example, Simens S7-200 series PLC took a fuzzy controller, uses the trapezoidal chart programming, has developed one kind of transportation fuzzy control system, has solved the problem which traffic flow equilibrium, not stably does not bring, According to the transportation condition real-time adjustment street-traffic control lights by achieved to the transportation real-time control ability, alleviates the partial traffic peak to be especially effective.

关 键 词：交通信号 梯形图 模糊控制 PLC 硬件实现 

分 类 号：TH7-55[机械工程—仪器科学与技术]