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Outils Ensemblistes Danalyse Et De Synthese Des Lois De Commande Robustes Pour Des Systemes Incertains
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Book Synopsis Outils ensemblistes d'analyse et de synthèse des lois de commande robustes pour des systèmes incertains by : Anamaria Luca
Download or read book Outils ensemblistes d'analyse et de synthèse des lois de commande robustes pour des systèmes incertains written by Anamaria Luca and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le travail de recherche concrétisé par ce mémoire de thèse se trouve à l'intersection de deux domaines importants, la commande robuste des systèmes linéaires (LTI, LPV, en commutation) à temps discret affectés par des perturbations permanentes bornées et des contraintes et les ensembles invariants ellipsoïdaux maximal ou minimal. La première partie de ce mémoire se focalise sur l'analyse de la stabilité entrée-état (en anglais ISS) du système par rapport à une perturbation bornée et le calcul des ensembles invariants ellipsoïdaux minimal ou maximal (ou sous forme d'ellipsoïdes tronqués) satisfaisant les contraintes. La deuxième partie envisage la synthèse d'une commande par retour d'état ISS stable et robuste vis-à-vis de perturbations bornées, garantissant l'ellipsoïde invariant maximal satisfaisant les contraintes ; puis la synthèse d'une loi decommande par retour d'état et observateur ISS stable vis-à-vis de perturbations bornées, garantissant une certaine performance ; enfin la synthèse d'un paramètre de Youla afin de garantir la projection maximale sur le sous-espace de l'état initial. La projection obtenue possède alors un volume plus grand que celui obtenu sans le paramètre de Youla d'où une amélioration en termes de robustesse. Une dernière étape vise à obtenirun compromis entre la robustesse et la performance en utilisant des critères basés sur le placement de pôles ou sur la vitesse de décroissance de la fonction de Lyapunov. Tous les résultats théoriques obtenus sont exprimés sous forme d'inégalités matricielles et sont validés en simulation et de façon expérimentale dans le cadre de la commande d'un convertisseur de puissance.
Book Synopsis Outils d'analyses et de synthèses des lois de commande robustes des systèmes dynamiques plats by : Loi͏̈c Lavigne
Download or read book Outils d'analyses et de synthèses des lois de commande robustes des systèmes dynamiques plats written by Loi͏̈c Lavigne and published by . This book was released on 2003 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail propose une méthodologie d'analyse et de synthèse de lois de commande robustes pour les systèmes dynamiques plats perturbés. Pour une famille de modèles perturbés, le suivi de trajectoire nominale déterminée à l'aide du concept de platitude, est garanti par un régulateur linéaire déterminé par optimisation de critères H[infini]. Cette synthèse et/ou analyse est basée dans un premier temps sur une famille de modèle LTI modélisant le comportement dynamique du procédé au voisinage de la trajectoire de référence. En vue d'une réduction du conservatisme une nouvelle méthodologie est ensuite proposée pour obtenir une modélisation LPV de la dynamique de l'écart de trajectoire. Cette démarche est appliquée à la synthèse d'une loi de commande robuste pour un procédé multivariable et non linéaire, puis à l'analyse d'une loi de commande de vol dans le cadre du groupe de Recherche Européen GARTEUR AG11.
Book Synopsis Commande robuste des systemes non linéaires by : Iyad Balloul
Download or read book Commande robuste des systemes non linéaires written by Iyad Balloul and published by . This book was released on 2000 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE THESE CONCERNE LA ROBUSTESSE DES SYSTEMES NON LINEAIRES. ELLE PROPOSE DEUX METHODES DE SYNTHESE DE LOI DE COMMANDE ROBUSTE ET UNE METHODE D'ANALYSE DE LA ROBUSTESSE. ELLE COMPORTE TROIS PARTIES : LA PREMIERE PRESENTE UNE NOUVELLE FORMULATION DU PROBLEME D'ATTENUATION DES PERTURBATIONS. LA LOI DE COMMANDE EST CARACTERISEE PAR LA SOLUTION D'UNE EQUATION DE TYPE HAMILTON-JACOBI-ISSACS AVEC CONTRAINTES FINALES D'INEGALITE. LA METHODOLOGIE PROPOSEE UTILISE LES TECHNIQUES D'HORIZON GLISSANT. ELLE ABOUTIT A UNE LOI DE STABILISATION ROBUSTE PAR RETOUR D'ETAT DYNAMIQUE DISCONTINU. AFIN DE VALIDER CETTE METHODE, UNE APPROCHE NUMERIQUE POUR RESOUDRE L'EQUATION DE HJI EST DEVELOPPEE CONFORMEMENT A LA THEORIE PROPOSEE. LES IDEES INTUITIVES AINSI QUE L'EFFICACITE DU CALCUL NUMERIQUE ASSOCIE SONT ILLUSTREES PAR UN EXEMPLE DE PENDULE INVERSE SIMPLE ET UN EXEMPLE DE SATELLITE EN MODE DEFAILLANT. LA DEUXIEME PARTIE PROPOSE UN ALGORITHME DE RESOLUTION DU PROBLEME D'OPTIMISATION MIN-MAX. L'ALGORITHME EST MIS EN BOUCLE FERMEE DANS UN SCHEMA A HORIZON GLISSANT. LES SYSTEMES CONSIDERES NE SONT PAS NECESSAIREMENT AFFINES. LES CONTRAINTES SUR LA COMMANDE PEUVENT ETRE PRISES EN COMPTE, MEME SI CES CONTRAINTES DEPENDENT DE L'ETAT. L'APPROCHE PEUT TRAITER LES INCERTITUDES PARAMETRIQUES ET LES PERTURBATIONS NON STATIONNAIRES. DANS LE DOMAINE DES PROCEDES BATCH LA METHODE ABOUTIT A DES RESULTATS TRES INTERESSANTS. QUANT AU DOMAINE DE LA MACHINE ASYNCHRONE, LES RESULTATS OBTENUS, BIEN QU'ILS SOIENT PRELIMINAIRES, MONTRENT L'APPORT INEDIT DE CETTE METHODE, SURTOUT EN CE QUI CONCERNE LES QUESTIONS PRIMORDIALES DE LA ROBUSTESSE ET DU REJET D'HARMONIQUES. LA TROISIEME PARTIE ILLUSTRE L'APPLICATION DE LA THEORIE DU GAP METRIQUE A L'ANALYSE DE LA ROBUSTESSE DES SYSTEMES DYNAMIQUES. LE CONTEXTE DE LA COMMANDE$H-ISINFTY$EST CONSIDERE COMME EXEMPLE. L'ETUDE N'ABOUTIT PAS A UNE NOUVELLE CONCLUSION CONCERNANT LA COMMANDE$H-ISINFTY$, ELLE MONTRE, NEANMOINS, LE NOUVEL OUTIL D'ANALYSE DE LA ROBUSTESSE.
Book Synopsis Synthèse de régulateurs robustes pour les systèmes linéaires incertains by : Mohammed Al Hamid
Download or read book Synthèse de régulateurs robustes pour les systèmes linéaires incertains written by Mohammed Al Hamid and published by . This book was released on 1996 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE THESE CONCERNE LA SYNTHESE D'UNE COMMANDE ROBUSTE GARANTISSANT LA STABILITE ROBUSTE, EN BOUCLE FERMEE, POUR LES SYSTEMES LINEAIRES INCERTAINS. LA STRATEGIE DE COMMANDE UTILISEE EST LA METHODE DE LA COMMANDE LINEAIRE QUADRATIQUE (LQ). LA RECHERCHE D'UNE COMMANDE LINEAIRE QUADRATIQUE ROBUSTE EST ALORS EQUIVALENTE A LA RECHERCHE DE CONDITIONS NECESSAIRES ET/OU SUFFISANTES POUR LA STABILISABILITE QUADRATIQUE DES SYSTEMES INCERTAINS. L'APPROCHE QUE NOUS AVONS CHOISIE EST UNE APPROCHE TEMPORELLE DE TYPE LYAPUNOV. LA REPRESENTATION CONSIDEREE DES SYSTEMES SE SITUE DANS L'ESPACE D'ETAT. DURANT NOTRE ETUDE, NOUS CONSIDERONS LE CAS OU L'INCERTITUDE EST DU TYPE DIT INCERTITUDE BORNEE EN VALEUR. NOUS AVONS EXPOSE L'ANALYSE DE LA ROBUSTESSE D'UNE COMMANDE LQ ET LES LIMITES DE SES PROPRIETES DE ROBUSTESSE EN PRESENCE DES PERTURBATIONS. NOUS AVONS DONNE DES CONDITIONS SUFFISANTES POUR QUE LA COMMANDE, CALCULEE POUR LE MODELE NOMINAL, TOLERE UN TEL TYPE DE PERTURBATION. EN SUITE, NOUS AVONS ETABLIT UNE METHODE DE SYNTHESE DE REGULATEURS ROBUSTES PAR RETOUR D'ETAT. LORSQUE LES VARIABLES D'ETAT NE SONT PAS CONNUES, NOUS ESTIMONS CES VARIABLES PAR UN OBSERVATEUR BASE SUR LE MODELE NOMINAL. LE GAIN DE CET OBSERVATEUR EST CALCULE EN TENANT COMPTE DE L'INCERTITUDE. CETTE ETUDE A ETE ETABLIE AUSSI BIEN POUR LES SYSTEMES A TEMPS CONTINU QUE POUR LES SYSTEMES A TEMPS DISCRET.
Book Synopsis Amongst Mathematicians by : Elena Nardi
Download or read book Amongst Mathematicians written by Elena Nardi and published by Springer Science & Business Media. This book was released on 2008 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a unique perspective on ways in which mathematicians: perceive their students' learning; teach; reflect on their teaching practice. Elena Nardi achieves this by employing two fictional, yet entirely data-grounded, characters to create a conversation on these important issues. The construction of these characters is based on large bodies of data including intense focused group interviews with mathematicians and extensive analyses of students' written work, collected and analyzed over a substantial period.
Book Synopsis Reduction and Givenness by : Jean-Luc Marion
Download or read book Reduction and Givenness written by Jean-Luc Marion and published by Northwestern University Press. This book was released on 1998-05-13 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes bibliographical rferences and index.
Book Synopsis Working with the Anthropological Theory of the Didactic in Mathematics Education by : Marianna Bosch
Download or read book Working with the Anthropological Theory of the Didactic in Mathematics Education written by Marianna Bosch and published by Routledge. This book was released on 2019-10-23 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the main research veins developed within the framework of the Anthropological Theory of the Didactic (ATD), a paradigm that originated in French didactics of mathematics. While a great number of publications on ATD are available in French and Spanish, Working with the Anthropological Theory of the Didactic in Mathematics Education is the first directed at English-speaking international audiences. Written and edited by leading researchers in ATD, the book covers all aspects of ATD theory and practice, including teaching applications. The chapters feature the most relevant and recent investigations presented at the 6th international conference on the ATD, offering a unique opportunity for an international audience interested in the study of mathematics teaching and learning to keep in touch with advances in educational research. The book is divided into four sections and the contributions explore key topics such as: The core concept of ‘praxeology’, including its development and functionalities The need for new teaching praxeologies in the paradigm of questioning the world The impact of ATD on the teaching profession and the education of teachers This is the second volume in the New Perspectives on Research in Mathematics Education. This comprehensive casebook is an indispensable resource for researchers, teachers and graduate students around the world.
Book Synopsis Systems Theory by : Igorʹ Viktorovich Blauberg
Download or read book Systems Theory written by Igorʹ Viktorovich Blauberg and published by . This book was released on 1977 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Teaching and Learning of Mathematics at University Level by : Derek Holton
Download or read book The Teaching and Learning of Mathematics at University Level written by Derek Holton and published by Springer Science & Business Media. This book was released on 2001-09-30 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a text that contains the latest in thinking and the best in practice. It provides a state-of-the-art statement on tertiary teaching from a multi-perspective standpoint. No previous book has attempted to take such a wide view of the topic. The book will be of special interest to academic mathematicians, mathematics educators, and educational researchers. It arose from the ICMI Study into the teaching and learning of mathematics at university level (initiated at the conference in Singapore, 1998).
Book Synopsis Mathematics as a Service Subject by : A. G. Howson
Download or read book Mathematics as a Service Subject written by A. G. Howson and published by Cambridge University Press. This book was released on 1988-05-27 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the 1987 International Commission on Mathematical Instruction conference, this volume comprises key papers on the role of mathematics in applied subjects.
Book Synopsis How Humans Learn to Think Mathematically by : David Tall
Download or read book How Humans Learn to Think Mathematically written by David Tall and published by Cambridge University Press. This book was released on 2013-09-02 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: How Humans Learn to Think Mathematically describes the development of mathematical thinking from the young child to the sophisticated adult. Professor David Tall reveals the reasons why mathematical concepts that make sense in one context may become problematic in another. For example, a child's experience of whole number arithmetic successively affects subsequent understanding of fractions, negative numbers, algebra, and the introduction of definitions and proof. Tall's explanations for these developments are accessible to a general audience while encouraging specialists to relate their areas of expertise to the full range of mathematical thinking. The book offers a comprehensive framework for understanding mathematical growth, from practical beginnings through theoretical developments, to the continuing evolution of mathematical thinking at the highest level.
Book Synopsis Networking of Theories as a Research Practice in Mathematics Education by : Angelika Bikner-Ahsbahs
Download or read book Networking of Theories as a Research Practice in Mathematics Education written by Angelika Bikner-Ahsbahs and published by Springer. This book was released on 2014-08-25 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: How can we deal with the diversity of theories in mathematics education? This was the main question that led the authors of this book to found the Networking Theories Group. Starting from the shared assumption that the existence of different theories is a resource for mathematics education research, the authors have explored the possibilities of interactions between theories, such as contrasting, coordinating, and locally integrating them. The book explains and illustrates what it means to network theories; it presents networking as a challenging but fruitful research practice and shows how the Group dealt with this challenge considering five theoretical approaches, namely the approach of Action, Production, and Communication (APC), the Theory of Didactical Situations (TDS), the Anthropological Theory of the Didactic (ATD), the approach of Abstraction in Context (AiC), and the Theory of Interest-Dense Situations (IDS). A synthetic presentation of each theory and their connections shows how the activity of networking generates questions at the theoretical, methodological and practical levels and how the work on these questions leads to both theoretical and practical progress. The core of the book consists of four new networking case studies which illustrate what exactly can be gained by this approach and what kind of difficulties might arise.
Book Synopsis Encyclopedia of Mathematics Education by : Stephen Lerman
Download or read book Encyclopedia of Mathematics Education written by Stephen Lerman and published by Springer. This book was released on 2020-02-07 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Encyclopedia of Mathematics Education is a comprehensive reference text, covering every topic in the field with entries ranging from short descriptions to much longer pieces where the topic warrants more elaboration. The entries provide access to theories and to research in the area and refer to the leading publications for further reading. The Encyclopedia is aimed at graduate students, researchers, curriculum developers, policy makers, and others with interests in the field of mathematics education. It is planned to be 700 pages in length in its hard copy form but the text will subsequently be up-dated and developed on-line in a way that retains the integrity of the ideas, the responsibility for which will be in the hands of the Editor-in-Chief and the Editorial Board. This second edition will include additional entries on: new ideas in the politics of mathematics education, working with minority students, mathematics and art, other cross-disciplinary studies, studies in emotions and mathematics, new frameworks for analysis of mathematics classrooms, and using simulations in mathematics teacher education. Existing entries will be revised and new entries written. Members of the international mathematics education research community will be invited to propose new entries. Editorial Board: Bharath Sriraman Melony Graven Yoshinori Shimizu Ruhama Even Michele Artigue Eva Jablonka Wish to Become an Author? Springer's Encyclopedia of Mathematics Education's first edition was published in 2014. The Encyclopedia is a "living" project and will continue to accept articles online as part of an eventual second edition. Articles will be peer-reviewed in a timely manner and, if found acceptable, will be immediately published online. Suggested articles are, of course, welcome. Feel encouraged to think about additional topics that we overlooked the first time around, and to suggest colleagues (including yourself!) who will want to write them. Interested new authors should contact the editor in chief, Stephen Lerman, at [email protected], for more specific instructions.
Book Synopsis Undergraduate Analysis by : Serge Lang
Download or read book Undergraduate Analysis written by Serge Lang and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 651 pages. Available in PDF, EPUB and Kindle. Book excerpt: This logically self-contained introduction to analysis centers around those properties that have to do with uniform convergence and uniform limits in the context of differentiation and integration. From the reviews: "This material can be gone over quickly by the really well-prepared reader, for it is one of the book’s pedagogical strengths that the pattern of development later recapitulates this material as it deepens and generalizes it." --AMERICAN MATHEMATICAL SOCIETY
Book Synopsis Societal Systems by : John N. Warfield
Download or read book Societal Systems written by John N. Warfield and published by John Wiley & Sons. This book was released on 1976 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Literary Works of Leonardo Da Vinci; Volume 1 by : Jean Paul Richter
Download or read book The Literary Works of Leonardo Da Vinci; Volume 1 written by Jean Paul Richter and published by Legare Street Press. This book was released on 2022-10-26 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Book Synopsis Violence and Civility by : Étienne Balibar
Download or read book Violence and Civility written by Étienne Balibar and published by Columbia University Press. This book was released on 2015-05-19 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Violence and Civility, Étienne Balibar boldly confronts the insidious causes of violence, racism, nationalism, and ethnic cleansing worldwide, as well as mass poverty and dispossession. Through a novel synthesis of theory and empirical studies of contemporary violence, the acclaimed thinker pushes past the limits of political philosophy to reconceive war, revolution, sovereignty, and class. Through the pathbreaking thought of Derrida, Balibar builds a topography of cruelty converted into extremism by ideology, juxtaposing its subjective forms (identity delusions, the desire for extermination, and the pursuit of vengeance) and its objective manifestations (capitalist exploitation and an institutional disregard for life). Engaging with Marx, Hegel, Hobbes, Clausewitz, Schmitt, and Luxemburg, Balibar introduces a new, productive understanding of politics as antiviolence and a fresh approach to achieving and sustaining civility. Rooted in the principles of transformation and empowerment, this theory brings hope to a world increasingly divided even as it draws closer together.
