Download or read book Sensorless AC Electric Motor Control written by Alain Glumineau and published by Springer. This book was released on 2015-03-16 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph shows the reader how to avoid the burdens of sensor cost, reduced internal physical space, and system complexity in the control of AC motors. Many applications fields—electric vehicles, wind- and wave-energy converters and robotics, among them—will benefit. Sensorless AC Electric Motor Control describes the elimination of physical sensors and their replacement with observers, i.e., software sensors. Robustness is introduced to overcome problems associated with the unavoidable imperfection of knowledge of machine parameters—resistance, inertia, and so on—encountered in real systems. The details of a large number of speed- and/or position-sensorless ideas for different types of permanent-magnet synchronous motors and induction motors are presented along with several novel observer designs for electrical machines. Control strategies are developed using high-order, sliding-mode and quasi-continuous-sliding-mode techniques and two types of observer–controller schemes based on backstepping and sliding-mode techniques are described. Experimental results validate the performance of these observer and controller configurations with test trajectories of significance in difficult sensorless-AC-machine problems. Control engineers working with AC motors in a variety of industrial environments will find the space-and-cost-saving ideas detailed in Sensorless AC Electric Motor Control of much interest. Academic researchers and graduate students from electrical, mechanical and control-engineering backgrounds will be able to see how advanced theoretical control can be applied in meaningful real systems.

Download or read book Commande de MacHine Asynchrone written by Ricardo Alvarez Salas and published by Omniscriptum. This book was released on 2011 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: La machine asynchrone associ e un convertisseur statique constitue un variateur dont l'utilisation industrielle est de plus en plus importante. Un tel int r t a t suscit d'une part cause de ses caract ristiques: faible co t d'achat, maintenance simplifi e et robustesse m canique et d'autre part gr ce l'essor de l' lectronique de puissance et au d veloppement de processeurs des signaux tr s puissants. Ce travail s'inscrit dans le cadre g n ral de l'observation et de la commande non lin aire de machine asynchrone. La premi re partie donne les l ments de mod lisation de la machine asynchrone. La deuxi me partie est d di e aux observateurs de flux et de couple de charge. La troisi me partie est consacr e la commande, nous nous int ressons plus particuli rement la commande par modes glissants. Dans la quatri me partie, nous effectuons une analyse comparative de quelques lois de commande non lin aires dans le cadre d'un "benchmark" propos la communaut internationale. Nous pr sentons des r sultats de simulation r alistes l'aide d'un environnement de simulation sp cialis . Le dernier point concerne la partie exp rimentale de l' tude.

Download or read book Commande non lin aire mod le pr dictif pour une machine asynchrone written by Adel Merabet and published by . This book was released on 2007 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Observation et Commande de la Machine Asynchrone written by Hamid Ouadi and published by Presses Academiques Francophones. This book was released on 2014-04-25 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cet ouvrage presente la synthese de regulateurs pour l'entrainement a vitesse et flux variables de la machine asynchrone (MAS) avec une prise en compte au niveau du modele de commande du caractere non lineaire du circuit magnetique. Les points abordes sont centres autours de trois axes: Modelisation, Observation et Commande de la MAS en tenant compte de la saturation magnetique. Le chapitre 2 presente un modele de la MAS tenant compte de la saturation magnetique. Les chapitres 3 et 4 sont dedies aux problemes de controle de vitesse et de flux de la MAS en utilisant des outils de l'automatique non lineaire. Le chapitre 5 traite les problemes d'analyse d'observabilite et de synthese d'observateurs d'etat pour la MAS saturee. Le chapitre 6 est dedie a l'association de l'ensemble loi de commande et observateur. Ce Livre se caracterise par une progression pedagogique bien structuree qui permet d'aborder le c ur du probleme de maniere graduelle. C'est un ouvrage de reference pour l'enseignement de la commande des machines electriques en Master et en Ecoles d'ingenieurs. Il devrait aussi trouver un bon accueil aupres des jeunes chercheurs s'interessant aux machines electriques.

Download or read book Commande Adaptative D un Moteur Asynchrones Cage written by Nadir Kabache and published by Omniscriptum. This book was released on 2011-05 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le pr sent travail propose une vari t de sch mas de commande adaptative, base de r seaux de neurones artificiels, en vue d'am liorer les performances dynamiques du moteur asynchrone cage. Ces approches visent trouver des solutions pour les principaux probl mes li s la commande de ce moteur, savoir, ceux relatifs au mod le non- lin aire impr cis, aux variations param triques, l'estimation du flux rotorique, etc. Les sch mas trait s utilisent une association combinant les r seaux de neurones artificiels, la commande non lin aire par lin arisation entr e-sortie et la th orie de commande non lin aire adaptative. Dans cette association, les capacit s d'approximation des r seaux de neurones artificiels sont exploit es pour d velopper des lois de commande plus souples et plus robustes pour la machine tudi e

Download or read book COMMANDE ADAPTATIVE NON LINEAIRE DE MACHINE ASYNCHRONE written by THOMAS.. VON RAUMER and published by . This book was released on 1994 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE TRAVAIL PRESENTE DANS CETTE THESE EST CONSACRE A LA COMMANDE ADAPTATIVE NON LINEAIRE DE MACHINES ASYNCHRONES. CES MACHINES SONT DES PROCEDES MULTIVARIABLES NON LINEAIRES FORTEMENT COUPLES A DYNAMIQUE RAPIDE ET A PARAMETRES VARIANT DANS LE TEMPS. SUR LE PLAN THEORIQUE DES LOIS DE COMMANDE NON LINEAIRES ADAPTATIVES PAR LINEARISATION ENTREE-SORTIE SONT DEVELOPPEES. CES LOIS DE COMMANDE PERMETTENT DE CONTROLER INDEPENDAMMENT LE COUPLE ET LE FLUX DANS LA MACHINE EN IMPOSANT UNE LIMITATION DE COURANT. DE NOUVEAUX TYPES D'OBSERVATEURS NON LINEAIRES ASSURANT LA STABILITE EN BOUCLE FERMEE DE L'ENSEMBLE COMMANDE ET OBSERVATEUR NON LINEAIRE SONT EGALEMENT SYNTHETISES. SUR LE PLAN EXPERIMENTAL L'APPLICATION DE L'UNE DES LOIS DE COMMANDE NON LINEAIRE DEVELOPPEES SUR UN BANC D'ESSAI INDUSTRIEL UTILISANT UN PROCESSEUR DE SIGNAL MONTRE LA FAISABILITE DE L'APPROCHE. DE NOMBREUX PROBLEMES DE MISE EN UVRE CONCERNANT L'IMPLANTATION DISCRETE DE LA LOI NON LINEAIRE, LA PRISE EN COMPTE DES IMPERFECTIONS DE L'ONDULEUR, L'OBSERVATION DU FLUX ET L'IMPLANTATION TEMPS REEL SONT RESOLUS

Download or read book Commande non lin aire sans capteur de la machine asynchrone written by Dramane Traoré and published by . This book was released on 2008 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Commande non lin aire d une machine asynchrone double alimentation written by Paul-Etienne Vidal and published by . This book was released on 2004 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette étude présente des stratégies linéaires et non-linéaires de contrôle appliquées à l'asservissement en vitesse d'une Machine Asynchrone à Double Alimentation (MADA) dont les enroulements statoriques et rotoriques sont reliés à des onduleurs de tensions à Modulation de Largeur d'Impulsion indépendants. Nous avons choisi de répartir les puissances actives entre le stator et le rotor suivant un certain rapport de proportionnalité. Cela nous conduit à garantir, en régime permanent, une répartition des pulsations statoriques et rotoriques. Cette répartition est assurée dans un premier temps par deux régulateurs de pulsations réparties, et dans un deuxième temps par le biais des angles de transformation directement. Nous développons ensuite deux modèles analytiques de la MADA : le premier exprime les courants, et le second les flux. Les simulations des stratégies de contrôle linéaire (contrôle vectoriel), et non-linéaire (contrôle par mode de glissement), démontrent un bon découplage entre l'axe magnétisant et l'axe du couple. Une validation expérimentale est présentée. Les premiers résultats expérimentaux montrent le bon contrôle de l'état magnétique de la machine, ainsi que la répartition des puissances désirées à travers les pulsations.

Download or read book Commande non lin aire d une machine asynchrone written by Eckart Graf von Westerholt and published by . This book was released on 1994 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: DANS CE TRAVAIL, L'AUTEUR MET AU POINT UNE STRATEGIE DE CONTROLE DE VITESSE D'UNE MACHINE ASYNCHRONE. L'OBJECTIF POURSUIVI EST DE S'AFFRANCHIR DE CERTAINES HYPOTHESES EMISES DANS LES COMMANDES CLASSIQUES DE TELS PROCESSUS: UTILISATION D'UN CAPTEUR MECANIQUE, SEPARATION DES MODES ELECTRIQUES ET MECANIQUES, ET FLUX STATIONNAIRE. LA PRISE EN COMPTE DU COUPLAGE DES MODES CONDUIT ALORS A UNE MODELISATION NON LINEAIRE DU PROCESSUS. L'ABSENCE DE CAPTEUR DE VITESSE NECESSITE L'OBSERVATION DE CELLE-CI ET DU COUPLE DE CHARGE. DANS CE CONTEXTE, LA DEFINITION DE LA STRATEGIE DE COMMANDE A DEMANDE AU PREALABLE UNE ETUDE DES REPERES DE MODELISATION, UNE COMPARAISON DES METHODES D'OBSERVATION DETERMINISTES ET STOCHASTIQUES, AINSI QU'UNE ANALYSE DETAILLEE DE L'OBSERVABILITE. LA COMMANDE PROPOSEE EST CONSTITUEE D'UN FILTRE DE KALMAN ETENDU ET D'UNE REGULATION NON LINEAIRE BASEE SUR LA METHODE DU DECOUPLAGE ENTREE-SORTIE. LE FILTRE ETENDU PERMET L'ESTIMATION ROBUSTE DES COURANTS, DES FLUX, DE LA VITESSE ET DU COUPLE DE CHARGE POUR UN FONCTIONNEMENT AVEC OU SANS CAPTEUR DE VITESSE. LA REGULATION NON LINEAIRE GARANTIT UNE COMMANDE PRECISE DE LA VITESSE EN PRESENCE D'UN FLUX VARIABLE. CES ETUDES ONT ABOUTI A LA REALISATION D'UN VARIATEUR ASYNCHRONE, DONT LA COMMANDE A ETE IMPLANTEE SUR UN MICROPROCESSEUR A STRUCTURE RISC (DSP32C). LES RESULTATS OBTENUS MONTRENT DE TRES BONNES PERFORMANCES STATIQUES ET DYNAMIQUES DU VARIATEUR ET CONFIRMENT LA ROBUSTESSE DE LA COMMANDE SUR TOUTE LA PLAGE DE VITESSE MEME EN L'ABSENCE D'UN CAPTEUR DE VITESSE

Download or read book Algebraic Methods for Nonlinear Control Systems written by Giuseppe Conte and published by Springer Science & Business Media. This book was released on 2007-01-19 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a self-contained introduction to algebraic control for nonlinear systems suitable for researchers and graduate students. It is the first book dealing with the linear-algebraic approach to nonlinear control systems in such a detailed and extensive fashion. It provides a complementary approach to the more traditional differential geometry and deals more easily with several important characteristics of nonlinear systems.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1973 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Electronic Engineering written by and published by . This book was released on 1966 with total page 1288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Data Analytics and Applications of the Wearable Sensors in Healthcare written by Shabbir Syed-Abdul and published by MDPI. This book was released on 2020-06-17 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a collection of comprehensive research articles on data analytics and applications of wearable devices in healthcare. This Special Issue presents 28 research studies from 137 authors representing 37 institutions from 19 countries. To facilitate the understanding of the research articles, we have organized the book to show various aspects covered in this field, such as eHealth, technology-integrated research, prediction models, rehabilitation studies, prototype systems, community health studies, ergonomics design systems, technology acceptance model evaluation studies, telemonitoring systems, warning systems, application of sensors in sports studies, clinical systems, feasibility studies, geographical location based systems, tracking systems, observational studies, risk assessment studies, human activity recognition systems, impact measurement systems, and a systematic review. We would like to take this opportunity to invite high quality research articles for our next Special Issue entitled “Digital Health and Smart Sensors for Better Management of Cancer and Chronic Diseases” as a part of Sensors journal.

Download or read book How I Became a Quant written by Richard R. Lindsey and published by John Wiley & Sons. This book was released on 2011-01-11 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: Praise for How I Became a Quant "Led by two top-notch quants, Richard R. Lindsey and Barry Schachter, How I Became a Quant details the quirky world of quantitative analysis through stories told by some of today's most successful quants. For anyone who might have thought otherwise, there are engaging personalities behind all that number crunching!" --Ira Kawaller, Kawaller & Co. and the Kawaller Fund "A fun and fascinating read. This book tells the story of how academics, physicists, mathematicians, and other scientists became professional investors managing billions." --David A. Krell, President and CEO, International Securities Exchange "How I Became a Quant should be must reading for all students with a quantitative aptitude. It provides fascinating examples of the dynamic career opportunities potentially open to anyone with the skills and passion for quantitative analysis." --Roy D. Henriksson, Chief Investment Officer, Advanced Portfolio Management "Quants"--those who design and implement mathematical models for the pricing of derivatives, assessment of risk, or prediction of market movements--are the backbone of today's investment industry. As the greater volatility of current financial markets has driven investors to seek shelter from increasing uncertainty, the quant revolution has given people the opportunity to avoid unwanted financial risk by literally trading it away, or more specifically, paying someone else to take on the unwanted risk. How I Became a Quant reveals the faces behind the quant revolution, offering you?the?chance to learn firsthand what it's like to be a?quant today. In this fascinating collection of Wall Street war stories, more than two dozen quants detail their roots, roles, and contributions, explaining what they do and how they do it, as well as outlining the sometimes unexpected paths they have followed from the halls of academia to the front lines of an investment revolution.

Download or read book Dictionary of Acronyms and Technical Abbreviations written by Jakob Vlietstra and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 703 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Dictionary covers information and communication technology (ICT), including hardware and software; information networks, including the Internet and the World Wide Web; automatic control; and ICT-related computer-aided fields. The Dictionary also lists abbreviated names of relevant organizations, conferences, symposia and workshops. This reference is important for all practitioners and users in the areas mentioned above, and those who consult or write technical material. This Second Edition contains 10,000 new entries, for a total of 33,000.

Download or read book Masters Abstracts International written by and published by . This book was released on 1996 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nonlinear Control Systems written by G. Conte and published by Springer. This book was released on 2014-03-12 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a unique and alternative approach to the study of nonlinear control systems, with applications. The approach presented is based on the use of algebraic methods which are intrinsically linear, rather than differential geometric methods, which are more commonly found in other reference works on the subject. This allows the exposition to remain simple from a mathematical point of view, and accessible for everyone who has a good understanding of linear control theory. The book is divided into the following three parts: Part 1 is devoted to mathematical preliminaries and to the development of tools and methods for system analysis. Part 2 is concerned with solving specific control problems, including disturbance decoupling, non-interactive control, model matching and feedback linearization problems. Part 3 introduces differential algebraic notions and discusses their applications to nonlinear control and system theory. With numerous examples used to illustrate theoretical results, this self-contained and comprehensive volume will be of interest to all those who have a good basic knowledge of standard linear control systems.