This work develops and investigates the performance of a new control law, specifically a Linear-Quadratic Regulator augmented with integral action (LQI), for the local ramp metering control problem when bottlenecks are located many kilometers (up to 5 km) downstream of the metered on-ramp. LQI makes use of measurements all along the stretch extending from the controllable on-ramp to the bottleneck location, being therefore capable to improve the stability and robustness properties of the control loop, compared to alternative approaches (PI regulators) that employ measurements only from the bottleneck location. Simulation results reveal that: i) the proposed methodology handles efficiently the local ramp metering task in case of very distant downstream bottlenecks; and, ii) LQI is much less sensitive compared to other previously proposed control strategies.


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    Titel :

    A linear-quadratic-integral regulator for local ramp metering in the case of distant downstream bottlenecks



    Erschienen in:

    Transportation Letters ; 12 , 10 ; 723-731


    Erscheinungsdatum :

    2020-11-25


    Format / Umfang :

    9 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Local Ramp Metering in the Case of Distant Downstream Bottlenecks

    Yibing Wang, / Papageorgiou, M. | IEEE | 2006


    Local ramp metering with distant downstream bottlenecks: A comparative study

    Kan, Yuheng / Wang, Yibing / Papageorgiou, Markos et al. | Elsevier | 2015



    Local Ramp Metering in Random-Location Bottlenecks Downstream of Metered On-Ramp

    Wang, Yibing / Papageorgiou, Markos / Gaffney, John et al. | Transportation Research Record | 2010