城市交通控制正在向着递阶结构的实时网络控制方向发展。在将大系统方法应用于城市交通控制时,Singh曾提出了过饱和网络模型及优化目标,它以路口的绿信比为控制量,饱和车流的排队长度为状态量,在一定的约束条件下,要使排队长度尽可能短。这一优化问题可以用Tamura两级目标协调法求解,但这是一种开环算法,并且信息传 Urban traffic control is moving toward the real-time network control of hierarchical architecture. Singh proposed a supersaturated network model and its optimization goal when applying the large-scale system approach to urban traffic control. It takes the ratio of green signal to signal as the control variable and the queue length of saturated traffic as the state quantity. Under certain constraints , To make the queue length as short as possible. This optimization problem can be solved using the Tamura two-level goal coordination method, but this is an open-loop algorithm, and the message