基于交通流颗粒化结构的交通控制模型

城市交通系统是一个复杂的、非线性、非结构化、强相关的随机系统,在选择适当时空尺度的交通流颗粒结构且消除或减弱了颗粒间关联的基础上,多尺度分析是交通系统一个简单而又有足够精度的问题求解方法。基于交通流颗粒化结构建立了多智能体交通控制模型,采用基于案例推理的动态参数匹配和协调冲突检验,以寻求交叉口信号控制的优化方案。最后,以广州中心区交叉口为例说明颗粒化结构分布式求解方案的可行性。

Traffic Control Model Based on Granulation Configuration of Traffic Flow

Urban traffic system is a complex stochastic system with characters of non-linear,non-structure and strong-correlation.On the base of traffic flow granulated construction selected by suitable temporal-spacial scales and eliminating or weaking link relationship among granulars,multi-scale resolution approach is a simple problem solution with enough accuracy for urban traffic system.The paper sets up a multi-agent traffic control model based on granulated construction and adopts dynamic parameters matching and harmonizing conflict test of case-based reasoning in order to optimize traffic signal control at intersections.Finally,the paper presents the feasibility of the distributed problem solution with granulated construction by a case of traffic signal control of an intersection in Central Business District of Guangzhou,China.