Exploració per tema "Large scale systems"

Ara es mostren els items 1-20 de 24

    • Challenges in large scale quantum mechanical calculations 

      Ratcliff, Laura E.; Mohr, Stephan; Huhs, Georg; Deutsch, Thierry; Masella, Michel; Genovese, Luigi (Wiley, 2017-02)
      Article
      Accés obert
      During the past decades, quantum mechanical methods have undergone an amazing transition from pioneering investigations of experts into a wide range of practical applications, made by a vast community of researchers. First ...

    • Complementary matrices in the inclusion principle for dynamic controllers 

      Bakule, Lubomir; Rodellar Benedé, José; Rossell Garriga, Josep Maria (2003-06)
      Article
      Accés obert
      A generalized structure of complementary matrices involved in the input-state-output Inclusion Principle for linear time-invariant systems (LTI) including contractibility conditions for static state feedback controllers ...

    • Constrained distributed optimization : A population dynamics approach 

      Barreiro Gómez, Julián; Quijano Silva, Nicanor; Ocampo-Martínez, Carlos (2016-07)
      Article
      Accés obert
      Large-scale network systems involve a large number of states, which makes the design of real-time controllers a challenging task. A distributed controller design allows to reduce computational requirements since tasks are ...

    • Contractibility of dynamic LTI controllers using complementary matrices 

      Bakule, Lubomir; Rodellar Benedé, José; Rossell Garriga, Josep Maria (2003-07)
      Article
      Accés obert
      A generalized structure of complementary matrices involved in the input-state-output inclusion principle for linear time-invariant systems including contractibility conditions for static state feedback controllers is well ...

    • Controllability-observability of expanded composite systems 

      Bakule, Lubomir; Rodellar Benedé, José; Rossell Garriga, Josep Maria (Elsevier, 2001-08-01)
      Article
      Accés obert
      The relation between original and expanded systems within the Inclusion Principle from the point of view of controllability–observability of both subsystems and composite systems is studied. It is proved that complementary ...

    • Distributed model predictive control using optimality condition decomposition and community detection 

      Segovia, Pablo; Puig Cayuela, Vicenç; Duviella, Eric; Etienne, Lucien (2021-03-01)
      Article
      Accés obert
      This work regards the development of a distributed model predictive control strategy for large-scale systems, as centralized implementations often suffer from non-scalability. The decomposition of the overall system into ...

    • Exa, zetta, yotta and beyond: on the evolution of Poisson solvers 

      Trias Miquel, Francesc Xavier; Alsalti Baldellou, Àdel; Oliva Llena, Asensio (Parallel Computational Fluid Dynamics (ParCFD), 2023)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this work, we aim to shed light to the following research question: is the complexity of numerically solving Poisson’s equation increasing or decreasing for very large DNS and LES simulations of incompressible flows? ...

    • Information exchange in randomly deployed dense WSNs with wireless energy harvesting capabilities 

      Mekikis, Prodromos Vasileios; Antonopoulos, Angelos; Kartsakli, Elli; Lalos, Aristeidis; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2016-04-01)
      Article
      Accés obert
      As large-scale dense and often randomly deployed wireless sensor networks (WSNs) become widespread, local information exchange between colocated sets of nodes may play a significant role in handling the excessive traffic ...

    • Input-delay model predictive control of inland waterways considering the backwater effect 

      Segovia Castillo, Pablo; Rajaoarisoa, Lala H.; Nejjari Akhi-Elarab, Fatiha; Duviella, Eric; Puig Cayuela, Vicenç (2018)
      Text en actes de congrés
      Accés obert
      Inland waterways are large-scale systems, generally characterized by negligible bottom slopes and large time delays. These features pose challenging problems at the modeling and controller design stages. A control-oriented ...

    • Large-scale dynamics of sandy coastlines: diffusivity and instability 

      Falqués Serra, Albert; Calvete Manrique, Daniel (2005-03)
      Article
      Accés obert
      The dynamics of small-amplitude perturbations of an otherwise rectilinear coastline due to the wave-driven alongshore sediment transport is examined at large time and length scales (years and kilometers). A linear stability ...

    • Modeling of interconnected flat open-channel flow : application to inland navigation canals 

      Segovia Castillo, Pablo; Rajaoarisoa, Lala H.; Nejjari Akhi-Elarab, Fatiha; Puig Cayuela, Vicenç; Duviella, Eric (2018-10-01)
      Article
      Accés restringit per política de l'editorial
      Inland navigation networks are composed of several artificial canals, usually characterized by no slope. These canals are large-scale systems that can be accurately described by means of the nonlinear Saint-Venant partial ...

    • Overlapping guaranteed cost control for uncertain continuous-time delayed systems 

      Bakule, Lubomir; Rodellar Benedé, José; Rossell Garriga, Josep Maria (Elsevier, 2005)
      Text en actes de congrés
      Accés obert
      Overlapping guaranteed cost control design problem is solved for a class of linear continuous-time uncertain systems with state as well as control delays. Unknown arbitrarily time-varying uncertainties with known bounds ...

    • Overlapping guaranteed cost control for uncertain discrete-time systems 

      Bakule, Lubomir; Rodellar Benedé, José; Rossell Garriga, Josep Maria (IFAC. International Federation of Automatic Control, 2004)
      Comunicació de congrés
      Accés obert
      Robust overlapping guaranteed cost control problem is presented for a class of state-delayed discrete-time systems. Unknown arbitrarily time-varying uncertainties with given known bounds are considered. Conditions preserving ...

    • Overlapping LQ control of discrete-time time-varying systems 

      Bakule, Lubomir; Rodellar Benedé, José; Rossell Garriga, Josep Maria (2001)
      Text en actes de congrés
      Accés obert
      Overlapping decentralized linear quadratic control design problem for discrete-time time-varying systems is solved by using generalized selection of complementary matrices. Explicit conditions on the structure of complementary ...

    • Overlapping reliable control for a cable-stayed bridge benchmark 

      Bakule, Lubomir; Paulet-Crainiceanu, Fideliu; Rodellar Benedé, José; Rossell Garriga, Josep Maria (2005-07)
      Article
      Accés obert
      The brief presents a reliable 1-out-2 reduced order control design strategy for a cable-stayed bridge benchmark using two overlapping subsystems and the linear quadratic Gaussian (LQG) design. Reliability with regard to ...

    • Reconfiguration of large-scale systems using back-up components 

      Trapiello Fernández, Carlos; Puig Cayuela, Vicenç; Cembrano Gennari, Gabriela (Pergamon Press, 2021-06)
      Article
      Accés obert
      Large-scale control systems tend to present a large number of alternative and back-up elements that, although not used in nominal operation, could be brought into play if necessary. Such hardware redundancy extends the ...

    • Resiliency in numerical algorithm design for extreme scale simulations 

      Agullo, Emmanuel; Altenbernd, Mirco; Anzt, Hartwig; Bautista Gomez, Leonardo; Benacchio, Tommaso (SAGE Publications, 2021-12)
      Article
      Accés obert
      This work is based on the seminar titled ‘Resiliency in Numerical Algorithm Design for Extreme Scale Simulations’ held March 1–6, 2020, at Schloss Dagstuhl, that was attended by all the authors. Advanced supercomputing is ...

    • Scientific Big Data Visualization: a Coupled Tools Approach 

      Artigues, Antoni; Cucchietti, Fernando; Tripiana, Carlos; Vicente, David; Calmet, Hadrien; Marín, Guillermo; Houzeaux, Guillaume; Vázquez, Mariano (South Ural State University (Chelyabinsk, Russia), 2015-02)
      Article
      Accés obert
      We designed and implemented a parallel visualisation system for the analysis of large scale time-dependent particle type data. The particular challenge we address is how to analyse a high performance computation style ...

    • Set-membership-based distributed moving horizon estimation of large-scale systems 

      Segovia Castillo, Pablo; Puig Cayuela, Vicenç; Duviella, Eric (2022-09-12)
      Article
      Accés obert
      This work is concerned with the design of a two-step distributed state estimation scheme for large-scale systems in the presence of unknown-but-bounded disturbances and noise. The set-membership approach is employed to ...

    • Simulation studies of optimal decentralized load-frequency regulators 

      Bertran Albertí, Eduardo; Herranz, J.; Munilla, I. (International Federation of Automatic Control (IFAC), 1986)
      Text en actes de congrés
      Accés obert
      On appliying the theory of the Optimal Decentralized Regulator (ODR) to the control of an Electric Power System (EPS), due attention has not been paid to some aspects such as the importance of the design model structure, ...