CONTRIBUTION A L'OPTIMISATION DES PERFORMANCES DYNAMIQUES DES MOTEURS PAS A PAS PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download CONTRIBUTION A L'OPTIMISATION DES PERFORMANCES DYNAMIQUES DES MOTEURS PAS A PAS PDF full book. Access full book title CONTRIBUTION A L'OPTIMISATION DES PERFORMANCES DYNAMIQUES DES MOTEURS PAS A PAS by Djafar Nassk. Download full books in PDF and EPUB format.
Book Description
LES PRINCIPALES CARACTERISTIQUES DU BON FONCTIONNEMENT D'UN MOTEUR PAS A PAS SONT DEFINIES PAR SA CAPACITE A ASSURER DES DEPLACEMENTS TRES RAPIDES TOUT EN EVITANT DES PERTES DE PAS. L'ETUDE DE L'OPTIMISATION DE CES DEUX ASPECTS FAIT L'OBJET DE CE MEMOIRE. UNE PREMIERE PARTIE CONCERNE UN MOTEUR A AIMANT PERMANENT DONT ON OBSERVE LA ROTATION PAR LA MESURE DU COURANT D'ALIMENTATION DES PHASES. L'EVOLUTION DE CE COURANT, DEPENDANT DE L'ETAT DE ROTATION OU DE BLOCAGE DU MOTEUR, A PERMIS LA CONCEPTION D'UN SYSTEME ELECTRONIQUE DE DETECTION DE PERTES DE PAS. LA DEUXIEME PARTIE UTILISE UN MOTEUR HYBRIDE A CINQ PHASES DONT ON OPTIMISE L'ALIMENTATION. LES NOUVELLES SEQUENCES DE COMMANDE PROPOSEES PERMETTENT L'AUGMENTATION DU COUPLE PENDANT LA ROTATION AUTORISANT AINSI LE FONCTIONNEMENT DU MOTEUR A DES VITESSES LIMITES ELEVEES. UNE ETUDE IDENTIQUE A ETE FAITE AVEC UN MOTEUR PAS A PAS A RELUCTANCE VARIABLE DERIVE DU MOTEUR HYBRIDE PRECEDENT
Book Description
LES PRINCIPALES CARACTERISTIQUES DU BON FONCTIONNEMENT D'UN MOTEUR PAS A PAS SONT DEFINIES PAR SA CAPACITE A ASSURER DES DEPLACEMENTS TRES RAPIDES TOUT EN EVITANT DES PERTES DE PAS. L'ETUDE DE L'OPTIMISATION DE CES DEUX ASPECTS FAIT L'OBJET DE CE MEMOIRE. UNE PREMIERE PARTIE CONCERNE UN MOTEUR A AIMANT PERMANENT DONT ON OBSERVE LA ROTATION PAR LA MESURE DU COURANT D'ALIMENTATION DES PHASES. L'EVOLUTION DE CE COURANT, DEPENDANT DE L'ETAT DE ROTATION OU DE BLOCAGE DU MOTEUR, A PERMIS LA CONCEPTION D'UN SYSTEME ELECTRONIQUE DE DETECTION DE PERTES DE PAS. LA DEUXIEME PARTIE UTILISE UN MOTEUR HYBRIDE A CINQ PHASES DONT ON OPTIMISE L'ALIMENTATION. LES NOUVELLES SEQUENCES DE COMMANDE PROPOSEES PERMETTENT L'AUGMENTATION DU COUPLE PENDANT LA ROTATION AUTORISANT AINSI LE FONCTIONNEMENT DU MOTEUR A DES VITESSES LIMITES ELEVEES. UNE ETUDE IDENTIQUE A ETE FAITE AVEC UN MOTEUR PAS A PAS A RELUCTANCE VARIABLE DERIVE DU MOTEUR HYBRIDE PRECEDENT
Book Description
LES MOTEURS PAS-A-PAS OCCUPENT UNE PLACE IMPORTANTE DANS LE DOMAINE DE L'ENTRAINEMENT. ILS SONT SOUVENT CHOISIS POUR LEUR FACILITE DE MISE EN UVRE. NOUS NOUS INTERESSONS DANS CE MEMOIRE AUX MOTEURS PAS-A-PAS A AIMANT DISQUE DE PORTESCAP ET A LEUR COMMANDE. DE PAR LEUR TECHNOLOGIE UNIQUE, CES MOTEURS ONT DES PERFORMANCES DYNAMIQUES TRES ELEVEES OBLIGEANT DE LES TRAITER DE FACON NON CONVENTIONNELLE. AFIN DE MIEUX COMPRENDRE ET MIEUX MAITRISER CETTE TECHNOLOGIE, NOUS EN FAISONS UNE ANALYSE ET UNE MODELISATION AUSSI COMPLETE QUE POSSIBLE ; NOUS ETUDIONS NOTAMMENT LE PROBLEME DES PERTES FER AFIN D'OPTIMISER LA REPONSE DES MOTEURS. NOUS PROPOSONS DIFFERENTS MODES DE PILOTAGE EN BOUCLE OUVERTE ET EN BOUCLE FERMEE. POUR LA COMMANDE EN BOUCLE OUVERTE, NOUS PROPOSONS UNE METHODE QUI PERMET DE CALCULER, POUR UN MOTEUR DONNE LE COUPLE DYNAMIQUE AVEC PRECISION ET D'OPTIMISER LE PROFIL DE VITESSE. LA COMMANDE EN BOUCLE FERMEE QUANT A ELLE, PERMET DE FAIRE FONCTIONNER LE MOTEUR DANS LE MODE AUTOCOMMUTE ET D'UTILISER PLEINEMENT SA DYNAMIQUE. CETTE ETUDE PERMET DE MIEUX COMPRENDRE LA TECHNOLOGIE DES MOTEURS PAS-A-PAS A AIMANT DISQUE ET D'EXPLOITER SES PERFORMANCES EXCEPTIONNELLES QUI LUI PERMETTENT DE RIVALISER AVEC DES SOLUTIONS BEAUCOUP PLUS SOPHISTIQUEES
Author: R. Krishnan Publisher: CRC Press ISBN: 1351835955 Category : Technology & Engineering Languages : en Pages : 454
Book Description
The switched reluctance machine (SRM) is the least expensive electrical machine to produce, yet one of the most reliable. As such, research has blossomed during the last decade, and the SRM and variable drive systems using SRMs are receiving considerable attention from industry. Because they require a power electronic converter and controller to function, however, successful realization of an SRM variable drive system demands an understanding of the converter and controller subsystems and their integration with the machine. Switched Reluctance Motor Drives provides that understanding. It presents a unified view of the machine and its drive system from all of its system and subsystem aspects. With a careful balance of theory and implementation, the author develops the analysis and design of SRMs from first principles, introduces a wide variety of power converters available for driving the SRM, and systematically presents both low- and high-performance controllers. The book includes an in-depth study of acoustic noise and its minimization along with application examples that include comparisons between ac and dc drives and SRM drive. The result is the first book that provides a state-of-the-art knowledge of SRMs, power converters, and their use with both sensor-based and sensorless controllers. Switched Reluctance Motor Drives enables both students and engineers to learn all aspects of SRM drive systems and appreciate the interdependence of the various subsystems in performance optimization.
Author: D. Birchall Publisher: Springer ISBN: 0230522491 Category : Business & Economics Languages : en Pages : 320
Book Description
In a competitive environment rivals will quickly respond to changes and improvements. This new contribution demonstrates that companies need to have a methodology for developing strategy with regard to future technology. New technology needs to be integrated into a strategic process and companies who are able to establish the capabilities to achieve this will secure robust competitive advantage. This powerful new approach will be demonstrated with examples and cases.
Author: Krishnanand N. Kaipa Publisher: Springer ISBN: 3319515950 Category : Technology & Engineering Languages : en Pages : 265
Book Description
This book provides a comprehensive account of the glowworm swarm optimization (GSO) algorithm, including details of the underlying ideas, theoretical foundations, algorithm development, various applications, and MATLAB programs for the basic GSO algorithm. It also discusses several research problems at different levels of sophistication that can be attempted by interested researchers. The generality of the GSO algorithm is evident in its application to diverse problems ranging from optimization to robotics. Examples include computation of multiple optima, annual crop planning, cooperative exploration, distributed search, multiple source localization, contaminant boundary mapping, wireless sensor networks, clustering, knapsack, numerical integration, solving fixed point equations, solving systems of nonlinear equations, and engineering design optimization. The book is a valuable resource for researchers as well as graduate and undergraduate students in the area of swarm intelligence and computational intelligence and working on these topics.
Author: Constantin Zopounidis Publisher: Springer Science & Business Media ISBN: 3642574785 Category : Business & Economics Languages : en Pages : 309
Book Description
During the last decades the globalization, the intensified competition and the rapid changes in the socio-economic and technological environment had a major impact on the global economic, financial and business environments. Within this environment, it is clear that banking institutions worldwide face new challenges and increasing risks, as well as increasing business potentials. The recent experience shows that achieving a sustainable development of the banking system is not only of interest to the banking institutions themselves, but it is also directly related to the development of the whole business and economic environment, both at regional and international level. The variety of new banking products that is constantly being developed to accommodate the increased customer needs (firms, organizations, individuals, etc.) provides a clear indication of the changes that the banking industry has undergone during the last two decades. The establishment of new products of innovative processes and instruments for their requires the implementation efficient management. The implementation of such processes and instruments is closely related to a variety of disciplines, advanced quantitative analysis for risk management, information technology, quality management, etc. The implementation ofthese approaches in banking management is in accordance with the finding that empirical procedures are no longer adequate to address the increasing complexity of the banking industry.
Author: Hans U. Gerber Publisher: Springer Science & Business Media ISBN: 3662026554 Category : Mathematics Languages : en Pages : 137
Book Description
HaIley's Comet has been prominently displayed in many newspapers during the last few months. For the first time in 76 years it appeared this winter, clearly visible against the nocturnal sky. This is an appropriate occasion to point out the fact that Sir Edmund Halley also constructed the world's first life table in 1693, thus creating the scientific foundation of life insurance. Halley's life table and its successors were viewed as deterministic laws, i. e. the number of deaths in any given group and year was considered to be a weIl defined number that could be calculated by means of a life table. However, in reality this number is random. Thus any mathematical treatment of life insurance will have to rely more and more on prob ability theory. By sponsoring this monograph the Swiss Association of Actuaries wishes to support the "modern" probabilistic view oflife contingencies. We are fortu nate that Professor Gerber, an internationally renowned expert, has assumed the task of writing the monograph. We thank the Springer-Verlag and hope that this monograph will be the first in a successful series of actuarial texts. Hans Bühlmann Zürich, March 1986 President Swiss Association of Actuaries Preface Two major developments have influenced the environment of actuarial math ematics. One is the arrival of powerful and affordable computers; the once important problem of numerical calculation has become almost trivial in many instances.
Author: Djafar Nassk
Author: Djafar Nassk
Author: Clément Goeldel (auteur d'une thèse de sciences.)
Author: Norbert Veignat
Author: Clément Lambert Ramiarinjaona
Author: R. Krishnan
Author: D. Birchall
Author: Krishnanand N. Kaipa
Author: Carol Ptak
Author: Constantin Zopounidis
Author: Hans U. Gerber