Download or read book Observation et commande des syst mes lin aires dans les domaines temporel et fr quentiel written by Montassar Ezzine and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans ce mémoire, nous nous sommes intéressés aux problèmes d'estimation, de filtrage H-infini mais aussi à la commande via un observateur dans les domaines temporel et fréquentiel, aussi bien pour les systèmes linéaires standards que pour les systèmes algèbro-différentiels plus généraux appelés systèmes singuliers. Le fil conducteur de notre démarche a été de proposer des résultats facilement implémentables et de couvrir la classe la plus large possible des systèmes linéaires. Ainsi, nous avons commencé notre travail en proposant des méthodes de synthèse d'observateurs à entrées inconnues pour des systèmes sans et avec retard, sujet à des entrées totalement inconnues. Nous cherchons ici à éliminer l'effet des entrées inconnues sur la dynamique de l'erreur d'observation. La synthèse temporelle est basée sur des LMIs permettant de déterminer la matrice de gain paramétrant toutes les matrices de l'observateur. L'approche LMI est en fait déduite de différents lemmes bornés qui eux mêmes se basent sur l'approche Lyapunov. La synthèse fréquentielle est déduite de celle temporelle en proposant des MFDs judicieuses et en utilisant l'approche de factorisation. Ensuite, nous avons proposé des filtres qui permettent d'assurer, en plus de la stabilité, un critère de performance H-infini, c'est à dire que nous cherchons à atténuer l'effet des perturbations, supposées être inconnues mais à énergie bornée, sur la dynamique de l'erreur d'estimation. L'un des principaux apports de nos travaux, a été de proposer une nouvelle écriture de la dynamique de l'erreur d'estimation sous forme singulières afin de contourner le problème de l'apparition de la dérivée des perturbations dans la dynamique de l'erreur d'estimation. Ainsi, nous sommes arrivés à relaxer les contraintes qui existent généralement sur les matrices des filtres non biaisés synthétisés; c'est à dire, des filtres dont la dynamique de l'erreur d'estimation ne dépend pas explicitement de l'état x(t) du système et de l'entrée u(t). La méthode fréquentielle est déduite de celle temporelle en utilisant l'approche de factorisation. Il est à noter que cette description fréquentielle, entrée-sortie, pourra permettre une implémentation aisée dans le domaine fréquentiel lorsque nous nous trouvons dans une situation où celle-ci est la plus indiquée. Enfin, nous nous sommes intéressés à l'application des méthodes d'estimation proposées dans le cadre de la commande. En effet, dans un premier temps, nous proposons une synthèse directe d'une commande basée sur un filtre H-infini directement dans le domaine fréquentiel pour des systèmes linéaires standards. Ensuite, nous nous focalisons sur les systèmes singuliers aussi bien dans le cas continu que discret et nous proposons de déterminer des lois de commande en utilisant un filtre fonctionnel qui satisfait un critère de performance H-infini. En effet, nous cherchons d'abord à calculer le gain de retour d'état qui nous permet de remplir les spécifications du système bouclé (stabilité,...). Puis, nous synthétisons un filtre qui a pour but de fournir en sortie une estimée de ce retour d'état.
Download or read book The Order of Minims in Seventeenth Century France written by P.J.S. Whitmore and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thinking of the text from the Dies frae (S. Matthew, XXV, 40). It is also probable that this other Saint Francis, partly out of admiration for his illustrious compatriot of Assisi and partly from a compelling urge to be superlative in all things, chose the title in opposition to the Franciscans, the Fratres Minori, l who had previously adopted this style taken from Saint Matthew, XXIII, 8. The title "Minim" was confirmed in these words" ... eosque Eremitos Ordinis Minimorum Fratrum Eremitarum F. Francesci de Paula in posterum nuncupari," taken from the Papal Bull, Meritis religiosae vitae, of 26 February, 1493. The earliest reference to the Order in France is in a fragment preserved in the Bibliotheque de l'Arsenal called, La regle et vie de Frere Franfois, pauvre et humble hermite de Paule, laquelle donne a tous ses 2 freres voulant entrer et vivre en son ordre. The dating of this manuscript should be accepted with considerable reserve; it bears a clearly legible "1474," although it seems most unlikely that any reference to an Order occurred before the Bull of 1493 or that any Rule appeared in French before the Founder's visit to Louis XI in 1483. 3 The fame of Francis and his reputation as a "guerisseur" had reached the French court where Louis XI was sick and dying; the King summoned him to the chateau of Le Plessis-Ies-Tours, but it required the intervention of the Pope to make the hermit undertake the journey
Download or read book Our Fathers Have Told Us written by John Ruskin and published by . This book was released on 1902 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Critical Technologies Plan written by and published by . This book was released on 1989 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exploring Chaos written by Nina Hall and published by W. W. Norton & Company. This book was released on 1994 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chaos theory is giving scientists fresh insights into all sorts of unruly phenomena-from dripping faucets to swinging pendulums, from the vagaries of the weather to the movements of the planets, from heart rhythms to gold futures. In this collection of front-line reports, edited for the general reader, internationally recognized experts such as Ian Stewart, Robert M. May, and Benoit Mandelbrot draw on the latest research to trace the roots of chaos in modern science and mathematics.
Download or read book Hypnosis written by Léon Chertok and published by Pergamon. This book was released on 1966 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ultra Wide Band Antennas written by Xavier Begaud and published by John Wiley & Sons. This book was released on 2013-03-04 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra Wide Band Technology (UWB) has reached a level of maturity that allows us to offer wireless links with either high or low data rates. These wireless links are frequently associated with a location capability for which ultimate accuracy varies with the inverse of the frequency bandwidth. Using time or frequency domain waveforms, they are currently the subject of international standards facilitating their commercial implementation. Drawing up a complete state of the art, Ultra Wide Band Antennas is aimed at students, engineers and researchers and presents a summary of internationally recognized studies.
Download or read book An Historical Geography of France written by Xavier de Planhol and published by Cambridge University Press. This book was released on 1994-03-17 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this 1994 book, Xavier de Planhol and Paul Claval, two of France's leading scholars in the field, trace the historical geography of their country from its roots in the Roman province of Gaul to the 1990s. They demonstrate how, for centuries, France was little more than an ideological concept, despite its natural physical boundaries and long territorial history. They examine the relatively late development of a more complex territorial geography, involving political, religious, cultural, agricultural and industrial unities and diversities. The conclusion reached is that only in the twentieth century had France achieved a profound territorial unity and only now are the fragmentations of the past being overwritten.
Download or read book MIMO written by Alain Sibille and published by Academic Press. This book was released on 2010-12-03 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foreword from Arogyaswami Paulraj, Professor (Emeritus), Stanford University (USA) The first book to show how MIMO principles can be implemented in today’s mobile broadband networks and components Explains and solves some of the practical difficulties that arise in designing and implementing MIMO systems Both theory and implementation sections are written in the context of the most recent standards: IEEE 802.11n (WiFi); IEEE 802.16 (WIMAX); 4G networks (3GPP/3GPP2, LTE)
Download or read book Experimental Chaos written by Stefano Boccaletti and published by A I P Press. This book was released on 2004-12-14 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 8th Experimental Chaos Conference again demonstrated the broad spectrum of areas where nonlinear dynamics plays an important role, such as circuits, hydrodynamics, optics, chemistry, fracture dynamics, neuroscience, and cognitive science. Additional contributions outline the trends for development and application of concepts and techniques of nonlinear dynamics.
Download or read book The Dysarthrias written by Malcolm Ray McNeil and published by . This book was released on 1984 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pervasive Mobile and Ambient Wireless Communications written by Roberto Verdone and published by Springer Science & Business Media. This book was released on 2012-01-02 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reporting the findings of COST 2100, a major European intergovernmental project, this volume offers system designers a good source of guidelines based on channel characterization and measurement-based modeling, as well as worthwhile ideas for future research.
Download or read book Protected Area Management written by Barbara Sladonja and published by BoD – Books on Demand. This book was released on 2012-08-08 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protected areas are at the base of the most national and international conservation strategies. Due to the many unpredictable elements in ecology matters, each protected area requires a case-specific set of guidelines but a common issue is how to cope with human interaction. The management of protected areas is replete with challenges and the only way to gain understanding and achieve greater management possibilities is to exchange experiences and knowledge. Environmental managers are aware of that and together with scientists are looking for more modern and better solutions, both with respect to natural resources and human interactions in many issues regarding nature protection. This publication presents reviews and research results on protected areas management, as well as 12 case studies derived from around the world with the aim of improving management effectiveness of the protected areas.
Download or read book Diffusion in Materials DIMAT 2011 written by Igor Bezverkhyy and published by Trans Tech Publications Ltd. This book was released on 2012-04-12 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Conference on Diffusion in Materials (DIMAT) is the benchmark conference series for diffusion in solids. DIMAT 2011 was organized by the University of Bourgogne in association with CNRS, Dijon (France). The conference showcased new results concerning theoretical tools as well as applied research approaches. Diffusion processes affect all types of materials: nanomaterials, materials for energy, metallurgy, glasses and ceramics, but each requires its own numerical tools. Volume is indexed by Thomson Reuters CPCI-S (WoS). This volume comprises most of the contributions presented at DIMAT 2011: 4 plenary lectures delivered by famous high-level scientists plus 88 contributions in the form of keynote lectures, talks and posters.
Download or read book Conspiracy of the Spaniards Against the Republic of Venice in 1618 written by Saint-Réal (M. l'abbé de, César Vichard) and published by . This book was released on 1838 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
