Documents disponibles écrits par cet auteur

Modeling and fault diagnosis of a polymer electrolyte fuel cell using electrical equivalent analysis / Hernandez, A. in IEEE transactions on energy conversion, Vol. 25 N° 1 (Mars 2010) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 25 N° 1 (Mars 2010) . - pp. 148 - 160 Titre : Modeling and fault diagnosis of a polymer electrolyte fuel cell using electrical equivalent analysis Type de document : texte imprimé Auteurs : Hernandez, A., Auteur ; Daniel Hissel, Auteur ; Outbib, R., Auteur Année de publication : 2010 Article en page(s) : pp. 148 - 160 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : fault  diagnosis;  proton  exchange  membrane  fuel  cells Résumé : Fuel cell systems are complex systems and a high degree of competence is needed in different areas of knowledge such as thermodynamics, fluid dynamics, electrochemistry, and others, for their comprehension. This paper is a contribution to global modeling and fault diagnosis of these systems. More precisely, the goal of this paper is twofold. First, an electrical equivalent model, which could be used as a unifying approach to fuel cell systems will be resented. Second, a methodology to use the electrical model for fuel cell system diagnosis will be introduced, making special emphasis on fuel cell flooding detection. In order to illustrate the relevance of the proposed approach, experimental validations of the model, and the diagnosis methodology are proposed. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5353706&sortType%3Das [...] [article] Modeling and fault diagnosis of a polymer electrolyte fuel cell using electrical equivalent analysis [texte imprimé] / Hernandez, A., Auteur ; Daniel Hissel, Auteur ; Outbib, R., Auteur . - 2010 . - pp. 148 - 160. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 25 N° 1 (Mars 2010) . - pp. 148 - 160 Mots-clés : fault  diagnosis;  proton  exchange  membrane  fuel  cells Résumé : Fuel cell systems are complex systems and a high degree of competence is needed in different areas of knowledge such as thermodynamics, fluid dynamics, electrochemistry, and others, for their comprehension. This paper is a contribution to global modeling and fault diagnosis of these systems. More precisely, the goal of this paper is twofold. First, an electrical equivalent model, which could be used as a unifying approach to fuel cell systems will be resented. Second, a methodology to use the electrical model for fuel cell system diagnosis will be introduced, making special emphasis on fuel cell flooding detection. In order to illustrate the relevance of the proposed approach, experimental validations of the model, and the diagnosis methodology are proposed. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5353706&sortType%3Das [...]

Modeling and simulation of PEM fuel cell thermal behavior on parallel computers / Salah, A. in IEEE transactions on energy conversion, Vol. 25, N° 3 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 25, N° 3 (Septembre 2010) . - pp. 768 - 777 Titre : Modeling and simulation of PEM fuel cell thermal behavior on parallel computers Type de document : texte imprimé Auteurs : Salah, A., Auteur ; Gaber, J., Auteur ; Outbib, R., Auteur Année de publication : 2011 Article en page(s) : pp. 768 - 777 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : C  language;  message  passing;  partial  differential  equations;  power  engineering  computing;  proton  exchange  membrane  fuel  cells;  synchronisation Résumé : Proton exchange membrane fuel cells (PEMFCs) have aroused great interest in recent years, in particular for transportation applications. However, fuel cell (FC) technology is not yet ready for large-scale commercial use, as it requires more understanding and intensive development, in particular in the thermal behavior area. Such understanding of the FC requires many large-scale simulations that can take unacceptably large execution time. This is especially true when using traditional models that are governed by heat equations and based on computational tools that derive approximate solutions to partial differential equations. Such multimodel systems also require synchronization that results in overhead. Instead, in this paper, a new fully integrated modeling approach that lends itself to parallelism is introduced. This approach can benefit from advances in parallel computing, and thus dramatically reduce time and enable multiple large simulations. This is called the global nodal method, which is intended to analyze and simulate the thermal behavior of PEMFCs. Parallel simulations are implemented with the message passing interface (MPI) and using the unified parallel C (UPC) language on parallel systems. It will be shown that computation time to conduct thermal behavior in large-scale simulation using MPI and UPC is significantly reduced compared to sequential simulations, and obtained data are highly precise and accurate. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5552146&sortType%3Das [...] [article] Modeling and simulation of PEM fuel cell thermal behavior on parallel computers [texte imprimé] / Salah, A., Auteur ; Gaber, J., Auteur ; Outbib, R., Auteur . - 2011 . - pp. 768 - 777. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 25, N° 3 (Septembre 2010) . - pp. 768 - 777 Mots-clés : C  language;  message  passing;  partial  differential  equations;  power  engineering  computing;  proton  exchange  membrane  fuel  cells;  synchronisation Résumé : Proton exchange membrane fuel cells (PEMFCs) have aroused great interest in recent years, in particular for transportation applications. However, fuel cell (FC) technology is not yet ready for large-scale commercial use, as it requires more understanding and intensive development, in particular in the thermal behavior area. Such understanding of the FC requires many large-scale simulations that can take unacceptably large execution time. This is especially true when using traditional models that are governed by heat equations and based on computational tools that derive approximate solutions to partial differential equations. Such multimodel systems also require synchronization that results in overhead. Instead, in this paper, a new fully integrated modeling approach that lends itself to parallelism is introduced. This approach can benefit from advances in parallel computing, and thus dramatically reduce time and enable multiple large simulations. This is called the global nodal method, which is intended to analyze and simulate the thermal behavior of PEMFCs. Parallel simulations are implemented with the message passing interface (MPI) and using the unified parallel C (UPC) language on parallel systems. It will be shown that computation time to conduct thermal behavior in large-scale simulation using MPI and UPC is significantly reduced compared to sequential simulations, and obtained data are highly precise and accurate. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5552146&sortType%3Das [...]

A Theoretical Control Strategy for a Diesel Engine / Outbib, R. in Transactions of the ASME . Journal of dynamic systems, measurement, and control, Vol. 128 N° 2 (Juin 2006)

Public ISBD [article]  in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 128 N° 2 (Juin 2006) . - 453-457 p. Titre : A Theoretical Control Strategy for a Diesel Engine Titre original : Stratégie Théorique de Commande pour un Moteur Diesel Type de document : texte imprimé Auteurs : Outbib, R., Auteur ; Dovifaaz, X., Auteur ; Rachid, A. ; Ouladsine, M. Article en page(s) : 453-457 p. Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Moteur  diesel  Carburant  OPacité  Modèle  mathématique  Méthode  non-linéaire  Contrôleur  Lyapunov  Rétroaction  Système  asymptotique  Simulation Index. décimale : 629.8 Résumé : In this paper we present a theoretical strategy for diesel engine control. More precisely, we propose a new approach to control the speed of the engine using the fuel rate as the control law and we show how this approach can be used to control the opacity. We first establish a mathematical model that describes the behavior of the engine. Afterward, we propose a new nonlinear method to design a controller for a class of nonlinear systems. The proposed method, based on Lyapunov theory, is used to design a smooth feedback law that renders the closed-loop system asymptotically stable around a desired engine speed value. Finally, simulation results are proposed to highlight the performances of the closed-loop system. En cet article nous présentons une stratégie théorique pour la commande de moteur diesel. Plus avec précision, nous proposons une nouvelle approche pour commander la vitesse du moteur en utilisant le taux de carburant pendant que la loi et nous de commande montrent comment cette approche peut être employée pour commander l'opacité. Nous établissons d'abord un modèle mathématique qui décrit le comportement du moteur. Après, nous proposons une nouvelle méthode non-linéaire pour concevoir un contrôleur pour une classe des systèmes non-linéaires. La méthode proposée, basée sur la théorie de Lyapunov, est employée pour concevoir une loi douce de rétroaction qui rend l'écurie en circuit fermé de système asymptotiquement autour d'une valeur désirée de vitesse de moteur. En conclusion, on propose des résultats de simulation pour accentuer les exécutions du système en circuit fermé. [article] A Theoretical Control Strategy for a Diesel Engine = Stratégie Théorique de Commande pour un Moteur Diesel [texte imprimé] / Outbib, R., Auteur ; Dovifaaz, X., Auteur ; Rachid, A. ; Ouladsine, M. . - 453-457 p. Génie Mécanique Langues : Anglais (eng) in Transactions of the ASME . Journal of dynamic systems, measurement, and control > Vol. 128 N° 2 (Juin 2006) . - 453-457 p. Mots-clés : Moteur  diesel  Carburant  OPacité  Modèle  mathématique  Méthode  non-linéaire  Contrôleur  Lyapunov  Rétroaction  Système  asymptotique  Simulation Index. décimale : 629.8 Résumé : In this paper we present a theoretical strategy for diesel engine control. More precisely, we propose a new approach to control the speed of the engine using the fuel rate as the control law and we show how this approach can be used to control the opacity. We first establish a mathematical model that describes the behavior of the engine. Afterward, we propose a new nonlinear method to design a controller for a class of nonlinear systems. The proposed method, based on Lyapunov theory, is used to design a smooth feedback law that renders the closed-loop system asymptotically stable around a desired engine speed value. Finally, simulation results are proposed to highlight the performances of the closed-loop system. En cet article nous présentons une stratégie théorique pour la commande de moteur diesel. Plus avec précision, nous proposons une nouvelle approche pour commander la vitesse du moteur en utilisant le taux de carburant pendant que la loi et nous de commande montrent comment cette approche peut être employée pour commander l'opacité. Nous établissons d'abord un modèle mathématique qui décrit le comportement du moteur. Après, nous proposons une nouvelle méthode non-linéaire pour concevoir un contrôleur pour une classe des systèmes non-linéaires. La méthode proposée, basée sur la théorie de Lyapunov, est employée pour concevoir une loi douce de rétroaction qui rend l'écurie en circuit fermé de système asymptotiquement autour d'une valeur désirée de vitesse de moteur. En conclusion, on propose des résultats de simulation pour accentuer les exécutions du système en circuit fermé.