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应用非线性最优控制方法,研究了高速公路网的匝道控制和路径诱导的集成问题,构造了集成控制的最优控制模型。在模型中,以路网总耗时最小为优化目标,以METANET模型为网络交通流模型,考虑了控制变量的更新周期约束,采用粒子群优化技术求解优化模型。仿真结果表明:无控制时,路网总耗时为3376veh·h;仅实施匝道控制时,路网总耗时为3005veh·h;仅实施路径诱导时,路网总耗时为2768veh·h;集成控制时,路网总耗时为2464veh·h。可见,集成控制效果最优。
The nonlinear optimal control method is applied to study the integration of ramp control and path guidance in highway network, and the optimal control model of integrated control is constructed. In the model, taking the minimum total road network time as the optimization objective, the METANET model is taken as the network traffic flow model, the update cycle constraints of the control variables are considered, and the particle swarm optimization is used to solve the optimization model. The simulation results show that the total time consumption of the road network is 3376veh · h when no control is needed. When the ramp control is implemented, the total time consumption of the road network is 3005veh · h. When only the route guidance is implemented, the total time consumption of the road network is 2768veh · h. When integrated control, the total time consuming road network is 2464veh · h. Can be seen that the integrated control of the best.