A hierarchical ramp metering control scheme for freeway networks

A. Kotsialos, M. Papageorgiou
Proceedings of the 2005, American Control Conference, 2005.  
A nonlinear model-predictive control approach to the problem of coordinated ramp metering is presented. The previously designed optimal control tool AMOC is used within the framework of a hierarchical control structure which consists of three control layers: the estimation/prediction layer, the optimization layer and the direct control layer. More emphasis is given to the last two layers where the control actions on a network-wide and on a local level, respectively, are decided. The
more » ... ed. The hierarchical control strategy combines AMOC's coordinated ramp metering control with local feedback (ALINEA) control in an efficient way. Simulation investigations for the Amsterdam ring-road are reported whereby the results are compared with those obtained by applying ALINEA as a stand-alone strategy. It is demonstrated that the proposed control scheme is efficient, fair and real-time feasible.
doi:10.1109/acc.2005.1470305 fatcat:rpkx44tkb5gffi7npopxno6w5u