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Wyszukujesz frazę "Ocampo-Martinez, C." wg kryterium: Autor

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    Tytuł:
    Reliability-based economic model predictive control for generalised flow-based networks including actuators’ health-aware capabilities
    Autorzy:
    Grosso, J. M.
    Ocampo-Martinez, C.
    Puig, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/330080.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    model predictive control
    flow based network
    dynamic safety stocks
    actuator health
    service reliability
    chance constraints
    economic optimisation
    sterowanie predykcyjne
    niezawodność serwisu
    optymalizacja ekonomiczna
    Opis:
    This paper proposes a reliability-based economic model predictive control (MPC) strategy for the management of generalized flow-based networks, integrating some ideas on network service reliability, dynamic safety stock planning, and degradation of equipment health. The proposed strategy is based on a single-layer economic optimisation problem with dynamic constraints, which includes two enhancements with respect to existing approaches. The first enhancement considers chance-constraint programming to compute an optimal inventory replenishment policy based on a desired risk acceptability level, leading to dynamical allocation of safety stocks in flow-based networks to satisfy non-stationary flow demands. The second enhancement computes a smart distribution of the control effort and maximises actuators’ availability by estimating their degradation and reliability. The proposed approach is illustrated with an application of water transport networks using the Barcelona network as the case study considered.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2016, 26, 3; 641-654
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multi-layer health-aware economic predictive control of a pasteurization pilot plant
    Autorzy:
    Karimi Pour, F.
    Puig, V.
    Ocampo-Martinez, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/330591.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    model predictive control
    two layers control scheme
    economic optimization
    health aware controller
    sterowanie predykcyjne
    optymalizacja ekonomiczna
    kontroler zorientowany
    Opis:
    This paper proposes two different health-aware economic predictive control strategies that aim at minimizing the damage of components in a pasteurization plant. The damage is assessed with a rainflow-counting algorithm that allows estimating the components' fatigue. By using the results obtained from this algorithm, a simplified model that characterizes the health of the system is developed and integrated into the predictive controller. The overall control objective is modified by adding an extra criterion that takes into account the accumulated damage. The first strategy is a single-layer predictive controller with an integral action to eliminate the steady-state error that appears when adding the extra criterion. In order to achieve the best minimal accumulated damage and operational costs, the single-layer approach is improved with a multi-layer control scheme, where the solution of the dynamic optimization problem is obtained from the model in two different time scales. Finally, to achieve the advisable trade-off between minimal accumulated damage and operational costs, both control strategies are compared in simulation over a utility-scale pasteurization plant.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2018, 28, 1; 97-110
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Robust MPC for actuator-fault tolerance using set-based passive fault detection and active fault isolation
    Autorzy:
    Xu, F.
    Puig, V.
    Ocampo-Martinez, C.
    Olaru, S.
    Niculescu, S. I.
    Powiązania:
    https://bibliotekanauki.pl/articles/330788.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    fault detection
    fault isolation
    set theoretic method
    fault tolerant control
    model predictive control
    detekcja uszkodzeń
    lokalizacja uszkodzeń
    sterowanie tolerujące uszkodzenia
    sterowanie predykcyjne
    Opis:
    In this paper, a fault-tolerant control (FTC) scheme is proposed for actuator faults, which is built upon tube-based model predictive control (MPC) as well as set-based fault detection and isolation (FDI). In the class of MPC techniques, tube-based MPC can effectively deal with system constraints and uncertainties with relatively low computational complexity compared with other robust MPC techniques such as min-max MPC. Set-based FDI, generally considering the worst case of uncertainties, can robustly detect and isolate actuator faults. In the proposed FTC scheme, fault detection (FD) is passive by using invariant sets, while fault isolation (FI) is active by means of MPC and tubes. The active FI method proposed in this paper is implemented by making use of the constraint-handling ability of MPC to manipulate the bounds of inputs. After the system has been detected to become faulty, the input-constraint set of the MPC controller is adjusted to actively excite the system for achieving FI guarantees on-line, where an active FI-oriented input set is designed off-line. In this way, the system can be excited in order to obtain more extra system-operating information for FI than passive FI approaches. Overall, the objective of this paper is to propose an actuator MPC scheme with as little as possible of FI conservatism and computational complexity by combining tube-based MPC and set theory within the framework of MPC, respectively. Finally, a case study is used to show the effectiveness of the proposed FTC scheme.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2017, 27, 1; 43-61
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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