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Author: Amine Boufaied
Publisher:
ISBN:
Category :
Languages : fr
Pages : 171
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Author: Amine Boufaied
Publisher:
ISBN:
Category :
Languages : fr
Pages : 171
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Author: Qinghua Zhang
Publisher:
ISBN:
Category :
Languages : fr
Pages : 143
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Book Description
LE DEVELOPPEMENT DES PROCEDES INDUSTRIELS MODERNES TEND A ACCROITRE NON SEULEMENT LEUR COMPLEXITE, MAIS AUSSI LES NOMBRES DE CAPTEURS ET D'ACTIONNEURS. DANS UN TEL SYSTEME COMPLEXES, LA CONDUITE NECESSITE GENERALEMENT LE TRAITEMENT D'UNE TRES GRANDE QUANTITE D'INFORMATIONS RECUEILLIES PAR LES CAPTEURS. SOUS LE FONCTIONNEMENT NORMAL LA CONDUITE EST GENERALEMENT ASSUREE PAR LE SYSTEME DE COMMANDE. EN PRESENCE D'ANOMALIES DU PROCEDE, LE TRAITEMENT D'INFORMATIONS REALISE PAR LE SYSTEME DE COMMANDE NE PERMET PAS DE CONTROLER LE PROCEDE ET DE PRENDRE DES MESURES DE SECURITES NECESSAIRES POUR EVITER DES CONSEQUENCES CATASTROPHIQUES. IL EST DONC NECESSAIRE DE DEVELOPPER DES SYSTEMES DE SURVEILLANCE QUI TRAITENT LES INFORMATIONS D'UNE FACON EFFICACE POUR DETECTER A TOUT MOMENT DES FONCTIONNEMENTS ANORMAUX DU PROCEDE. POUR REPONDRE A CE BESOIN INDUSTRIEL, DIVERSES METHODES DE SURVEILLANCE ONT ETE DEVELOPPEES, TELLES QUE DES METHODES STATISTIQUES DE DETECTION, DES METHODES DE DIAGNOSTIC COMBINATOIRE ET DES METHODES DE L'INTELLIGENCE ARTIFICIELLE. CES DIVERSES METHODES PRESENTENT CHACUNE DES AVANTAGES ET INCONVENIENTS DANS CHAQUE APPLICATION CONCRETE. L'IDEE INITIALE DES TRAVAUX DE CETTE THESE VISAIT LA CONJUGAISON DE DIFFERENTES METHODES, NOTAMMENT DES METHODES NUMERIQUES ET DES METHODES SYMBOLIQUES. DANS CETTE THESE SONT DONC PRESENTEES: UNE ETUDE CRITIQUE D'UNE APPROCHE DE RAISONNEMENT SYMBOLIQUE, LA PHYSIQUE QUALITATIVE; LA MODELISATION DES SYSTEMES DE TURBINE A GAZ, ET EN PARTICULIER DU COMPRESSEUR ET DE L'ENSEMBLE DES CHAMBRES DE COMBUSTION ET DE LA TURBINE DE DETENTE; LE RESEAU D'ONDELETTES, UNE METHODE GENERALE D'APPROXIMATION DE FONCTIONS NON-LINEAIRES MULTIVARIABLES, MOTIVEE PAR L'ETUDE DU RENDEMENT DU COMPRESSEUR; UNE METHODE D'IDENTIFICATION DE SYSTEMES STATIQUES NON-LINEAIRES A ENTREES ET SORTIES BRUITEES, MOTIVEE PAR LA MODELISATION DES CHAMBRES DE COMBUSTION ET DE LA TURBINE DE DETENTE; L'APPLICATION, ET L'ADAPTATION A CET ENSEMBLE DE COMBUSTION, DE LA DEMARCHE GENERALE DE SURVEILLANCE PRECEDEMMENT DEVELOPPEE A L'IRISA
Author: Gaston Lefranc
Publisher: Elsevier
ISBN: 9780080444840
Category : Business & Economics
Languages : en
Pages : 440
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Author: LAURENT.. TROMA
Publisher:
ISBN:
Category :
Languages : fr
Pages : 180
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Book Description
LA SURVEILLANCE ET LE DIAGNOSTIC DE PANNES (SDP) DANS LES SYSTEMES COMPLEXES REPOSENT ICI SUR LA CONNAISSANCE D'UN COMPORTEMENT DE REFERENCE ET SUR L'EXPLOITATION DE SIGNAUX DELIVRES PAR LES CAPTEURS, NUMERIQUES OU SYMBOLIQUES (MARCHE/ARRET, ALARMES). NOUS PRENONS POUR CADRE UNE MODELISATION CONJOINTE, OU HYBRIDE NUMERIQUE/SYMBOLIQUE, DE LA PRODUCTION DE CES SIGNAUX, PAR MODELE A ETAT CONTINU PARAMETRE POUR L'ASPECT NUMERIQUE ET SINON PAR SYSTEME A EVENEMENTS DISCRETS, ICI UN RESEAU DE PETRI (RDP). LA CONCEPTION DU RDP PROPOSE EXPLOITE LES CONNAISSANCES A PRIORI DISPONIBLES : ARBRES DE DEFAILLANCES, ISSUS DES ANALYSES DE RISQUE DES SYSTEMES, ET GRAPHE (DES MODES) DE FONCTIONNEMENT, ISSU PAR EXEMPLE D'UN GRAFCET DE COMMANDE. LA SDP CONSISTE ALORS A ESTIMER DANS UN CADRE BAYESIEN, LA SEQUENCE OPTIMALE D'EVENEMENTS NON OBSERVES (LES DEFAILLANCES) SURVENUS DANS LE RDP, CONDITIONNELLEMENT AUX SIGNAUX NUMERIQUES DANS LESQUELS SE MANIFESTENT LES PANNES : POUR CELA DEUX ALGORITHMES DE TYPE VITERBI SONT DEVELOPPES, SELON QUE LE MODELE HYBRIDE EST PUREMENT STOCHASTIQUE OU NON. DANS LE PREMIER CAS, LE RDP EST RESTREINT A LA DYNAMIQUE DES DEFAILLANCES, SUPPOSEE COMPLETEMENT PROBABILISEE, CE QUI PERMET D'ADOPTER UN CADRE MARKOVIEN CACHE POUR L'ESTIMATION. DANS LE SECOND CAS, ON INCLUT LES POSSIBILITES DE CHANGEMENT DE MODE DE FONCTIONNEMENT : UN ENSEMBLE DE MODELES D'ETAT DECRIT LA PRODUCTION DES SIGNAUX NUMERIQUES SELON LES PHASES DE FONCTIONNEMENT DU SYSTEME ; LEUR ALTERNANCE ETANT OBSERVEE DE MANIERE CERTAINE, LE RDP EST MAINTENANT PARTIELLEMENT DETERMINISTE. UN ALGORITHME DE VITERBI GENERALISE, RECEMMENT DEVELOPPE POUR LES RDP PARTIELLEMENT STOCHASTIQUES, EST ICI ETENDU A CE TYPE DE SYSTEME. DANS LES DEUX CAS, LES OBSERVATIONS NUMERIQUES DU VITERBI SONT ELABOREES SELON L'APPROCHE ASYMPTOTIQUE LOCALE. UN EXEMPLE SIMULE PRESENTE LES QUALITES ET LIMITES DE CETTE APPROCHE.
Author: L. Foulloy
Publisher: Pergamon
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 662
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Book Description
SICICA'97 was the third symposium in the series (1992, Malaga - Spain; 1994, Budapest - Hungary). It was sponsored by the Technical Committee on Components and Instruments and was organized by the Laboratoire d'Automatique et de MicroInformatique Industrielle, Universiteacute; de Savoie, on behalf of AFCET, the National Member Organization. The symposium was held in the Impeacute;rial Palace Congress Center, Annecy. 178 papers were submitted as draft papers and reviewed by the International Program Committee members who selected 117 papers coming from 25 countries. The topics covered include: the evolution of electronic components, especially mircocontrollers and digital signal processors which can be used for the implementation of instruments where intelligence is located in the processing; problems and solutions using fieldbuses for the control of automated processes; and the principal phases in the industrialisation of microsystems which associate micromechanics and microelectronics. The Symposium showed the vitality of the research in the field of intelligent instruments and components.
Author: North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Flight Vehicle Integration Panel. Symposium
Publisher:
ISBN:
Category : Weapons systems
Languages : en
Pages : 272
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Author: M. H. Hamza
Publisher: ACTA Press
ISBN:
Category : Computers
Languages : en
Pages : 190
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Author: Jean-Pierre Dal Pont
Publisher: John Wiley & Sons
ISBN: 1118565983
Category : Technology & Engineering
Languages : en
Pages : 382
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Book Description
Process Engineering, the science and art of transforming raw materials and energy into a vast array of commercial materials, was conceived at the end of the 19th Century. Its history in the role of the Process Industries has been quite honorable, and techniques and products have contributed to improve health, welfare and quality of life. Today, industrial enterprises, which are still a major source of wealth, have to deal with new challenges in a global world. They need to reconsider their strategy taking into account environmental constraints, social requirements, profit, competition, and resource depletion. “Systems thinking” is a prerequisite from process development at the lab level to good project management. New manufacturing concepts have to be considered, taking into account LCA, supply chain management, recycling, plant flexibility, continuous development, process intensification and innovation. This book combines experience from academia and industry in the field of industrialization, i.e. in all processes involved in the conversion of research into successful operations. Enterprises are facing major challenges in a world of fierce competition and globalization. Process engineering techniques provide Process Industries with the necessary tools to cope with these issues. The chapters of this book give a new approach to the management of technology, projects and manufacturing. Contents Part 1: The Company as of Today 1. The Industrial Company: its Purpose, History, Context, and its Tomorrow?, Jean-Pierre Dal Pont. 2. The Two Modes of Operation of the Company – Operational and Entrepreneurial, Jean-Pierre Dal Pont. 3. The Strategic Management of the Company: Industrial Aspects, Jean-Pierre Dal Pont. Part 2: Process Development and Industrialization 4. Chemical Engineering and Process Engineering, Jean-Pierre Dal Pont. 5. Foundations of Process Industrialization, Jean-François Joly. 6. The Industrialization Process: Preliminary Projects, Jean-Pierre Dal Pont and Michel Royer. 7. Lifecycle Analysis and Eco-Design: Innovation Tools for Sustainable Industrial Chemistry, Sylvain Caillol. 8. Methods for Design and Evaluation of Sustainable Processes and Industrial Systems, Catherine Azzaro-Pantel. 9. Project Management Techniques: Engineering, Jean-Pierre Dal Pont. Part 3: The Necessary Adaptation of the Company for the Future 10. Japanese Methods, Jean-Pierre Dal Pont. 11. Innovation in Chemical Engineering Industries, Oliver Potier and Mauricio Camargo. 12. The Place of Intensified Processes in the Plant of the Future, Laurent Falk. 13. Change Management, Jean-Pierre Dal Pont. 14. The Plant of the Future, Jean-Pierre Dal Pont.
Author: World Intellectual Property Organization
Publisher: WIPO
ISBN: 9280526804
Category : Law
Languages : en
Pages : 146
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Book Description
WIPO's latest World Intellectual Property Report (WIPR) explores the role of IP at the nexus of innovation and economic growth, focusing on the impact of breakthrough innovations.
Author: Marc Aiguier
Publisher: Springer Science & Business Media
ISBN: 3642344038
Category : Technology & Engineering
Languages : en
Pages : 338
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Book Description
This book contains all refereed papers that were accepted to the third edition of the « Complex Systems Design & Management » (CSD&M 2012) international conference that took place in Paris (France) from December 12-14, 2012. (Website: http://www.csdm2012.csdm.fr) These proceedings cover the most recent trends in the emerging field of complex systems sciences & practices from an industrial and academic perspective, including the main industrial domains (transport, defense & security, electronics, energy & environment, e-services), scientific & technical topics (systems fundamentals, systems architecture& engineering, systems metrics & quality, systemic tools) and system types (transportation systems, embedded systems, software & information systems, systems of systems, artificial ecosystems). The CSD&M 2012 conference is organized under the guidance of the CESAMES non-profit organization (http://www.cesames.net).
