关键词: 快速路系统, 控制器构造, 完全信息服从, 指数收敛, 算法设计

Abstract: The freeway systems’ efficiency will be decreased for the congestion.To eliminate the congestion，a density controller is put forward under the assumption that all vehicles’ drives instantly follow the information issued by the controller.On the macroscopic level，a density controller calculates the desired speed commands to be followed by vehicles in each section of the freeway lanes in order to achieve desired traffic density distributions that lead to optimum traffic flow conditions.On the microscopic level，each vehicle is driven according to the appropriate commands sent by the density controller.Then a real-time and effectiveness-high algorithm is designed.The simulation results guarantee exponential convergence of the traffic density at each section to the desired density and demonstrate significant benefits in terms of smooth and stable traffic flow that reduce congestion considerably.

Key words: freeway systems, controller construction, complete information followed, exponentially convergent, algorithm design