基于网格技术的高速公路通道实时协同控制

Real time Coordinated Control on Freeway Corridor Based on Grid

针对大城市高速公路通道控制中城市高速公路子系统、并行街道子系统、匝道子系统的控制策略独立制定产生的不协调状况,以高速公路通道整体为研究对象,建立高速公路通道多控制措施多子系统协同控制的分层递阶控制体系;针对高速公路通道协同控制模型求解耗时长,通道交通流实时控制无法真正实现的难题,构建高速公路通道网格体系,并对关键中间件模型设计分布式求解算法,利用网格高性能计算能力,实现通道控制问题的快速求解。

In urban freeway corridor,control strategies of freeway subsystems,parallel street subsystems,or ramp subsystems can be contradictive if they be determined only by several subsystems or one subsystem＇s states. Therefore,freeway corridor hierarchy structure and its multi-level coordination control model are devised to coordinate multiple subsystems and various control measures. At the same time, because of multi-level model＇s complex, nonlinear property and high dimension characteristic, its solution is extremely difficult and time -consuming. At present, static control or quasi real time control is often used. Therefore, freeway corridor grid is built to quickly solve multi-level model based on high performance computation capability of grids. Finally, two middleware models on multi-user class dynamic traffic assignment and coordination of control and guidance are set up and their distributed algorithms are discussed.