Nonlinear Model Predictive Control for Resource Allocation in the Management of Intermodal Container Terminals (Contributo in atti di convegno)

Type
Label
  • Nonlinear Model Predictive Control for Resource Allocation in the Management of Intermodal Container Terminals (Contributo in atti di convegno) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • A. Alessandri, C. Cervellera, M. Cuneo, M. Gaggero (2008)
    Nonlinear Model Predictive Control for Resource Allocation in the Management of Intermodal Container Terminals
    in International Workshop on Assessment and Future Directions of Nonlinear Model Predictive Control, Pavia, 5-9 September 2008
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • A. Alessandri, C. Cervellera, M. Cuneo, M. Gaggero (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. Department of Production Engineering, Thermoenergetics, and Mathematical Models (DIPTEM), University of Genoa, P.le Kennedy Pad. D, 16129 Genoa 2. Institute of Intelligent Systems for Automation (ISSIA), National Research Council of Italy, Via De Marini 6, 16149 Genoa, Italy 3. Institute of Intelligent Systems for Automation (ISSIA), National Research Council of Italy, Via De Marini 6, 16149 Genoa, Italy 4. Department of Production Engineering, Thermoenergetics, and Mathematical Models (DIPTEM), University of Genoa, P.le Kennedy Pad. D, 16129 Genoa (literal)
Titolo
  • Nonlinear Model Predictive Control for Resource Allocation in the Management of Intermodal Container Terminals (literal)
Abstract
  • Nonlinear predictive control is proposed to allocate the available transfer resources in the management of container terminals by minimizing a performance cost function that measures the lay times of carriers over a for- ward horizon. Such an approach to predictive control is based on a model of the container flows inside a terminal as a system of queues. Binary variables are included into the model to represent the events of departure or stay of a carrier, thus the proposed approach requires the on-line solution of a mixed-integer non- linear programming problem. Two techniques for solving such a problem are considered that account for the presence of binary variables as well as nonlin- earities into the model and the cost function. The first relies on the application of a standard branch-and-bound algorithm. The second is based on the idea of dealing with the decisions associated with the binary variables as step functions. In this case, real nonlinear programming techniques are used to find a solution. A third approach is proposed that is based on the idea of approximating off line the feedback control laws that result from the application of the two previous approaches. The approximation is made using a neural network that allows one to construct an approximate suboptimal feedback control law by optimizing the neural weights. Preliminary simulation results are reported to compare such methodologies. (literal)
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