Commande et observation des systèmes à retards variables - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Commande et observation des systèmes à retards variables write by Alexandre Seuret. This book was released on 2006. Commande et observation des systèmes à retards variables available in PDF, EPUB and Kindle. Ce mémoire concerne la commande et l'observation des systèmes à retard variable linéaires ou non ainsi que plusieurs applications qui y sont liées : échantillonnage, commande en réseau et par retour visuel. Pour de tels systèmes dynamiques, l'évolution dépend non seulement des informations à l'instant présent mais aussi de son passé. Ce sont des systèmes "héréditaires''. Le premier chapitre présente le contexte et des bases théoriques de l'étude. Le deuxième chapitre traite du problème théorique de la stabilité et de la stabilisation exponentielles des systèmes linéaires à retard variable. L'étude concerne donc non seulement la convergence mais caractérise aussi sa rapidité. Le troisième chapitre généralise ces résultats à des systèmes ne se réduisant pas à des équations linéaires stationnaires. En particulier, on considère deux problèmes pratiques : l'incertitude provenant de variation de paramètres et la saturation de commande. Dans le quatrième chapitre, on procède à l'étude des systèmes continus à commande échantillonnée. L'approche par retard variable proposée permet d'utiliser des techniques de "temps continu''. Le cinquième chapitre concerne l'observation des systèmes à retard. Nous présentons des résultats concernant le cas, fréquent dans la littérature, de retard connu mais aussi de retard inconnu, plus délicat. Le dernier chapitre présente quelques problèmes expérimentaux où les résultats théoriques trouvent finalement leur justification. Nous nous penchons particulièrement sur le problème de la commande d'un robot à distance à travers un réseau et de la commande d'un système dont les sorties proviennent d'une caméra qui induit un retard et un échantillonnage.
Analysis and Control of Oilwell Drilling Vibrations
Analysis and Control of Oilwell Drilling Vibrations - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Analysis and Control of Oilwell Drilling Vibrations write by Martha Belem Saldivar Márquez. This book was released on 2015-03-09. Analysis and Control of Oilwell Drilling Vibrations available in PDF, EPUB and Kindle. This book reports the results of exhaustive research work on modeling and control of vertical oil well drilling systems. It is focused on the analysis of the system-dynamic response and the elimination of the most damaging drill string vibration modes affecting overall perforation performance: stick-slip (torsional vibration) and bit-bounce (axial vibration). The text is organized in three parts. The first part, Modeling, presents lumped- and distributed-parameter models that allow the dynamic behavior of the drill string to be characterized; a comprehensive mathematical model taking into account mechanical and electric components of the overall drilling system is also provided. The distributed nature of the system is accommodated by considering a system of wave equations subject to nonlinear boundary conditions; this model is transformed into a pair of neutral-type time-delay equations which can overcome the complexity involved in the analysis and simulation of the partial differential equation model. The second part, Analysis, is devoted to the study of the response of the system described by the time-delay model; important properties useful for analyzing system stability are investigated and frequency- and time-domain techniques are reviewed. Part III, Control, concerns the design of stabilizing control laws aimed at eliminating undesirable drilling vibrations; diverse control techniques based on infinite--dimensional system representations are designed and evaluated. The control proposals are shown to be effective in suppressing stick-slip and bit-bounce so that a considerable improvement of the overall drilling performance can be achieved. This self-contained book provides operational guidelines to avoid drilling vibrations. Furthermore, since the modeling and control techniques presented here can be generalized to treat diverse engineering problems, it constitutes a useful resource to researchers working on control and its engineering application in oil well drilling.
Representation and Control of Infinite Dimensional Systems
Representation and Control of Infinite Dimensional Systems - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Representation and Control of Infinite Dimensional Systems write by Alain Bensoussan. This book was released on 2007-04-05. Representation and Control of Infinite Dimensional Systems available in PDF, EPUB and Kindle. This unified, revised second edition of a two-volume set is a self-contained account of quadratic cost optimal control for a large class of infinite-dimensional systems. The original editions received outstanding reviews, yet this new edition is more concise and self-contained. New material has been added to reflect the growth in the field over the past decade. There is a unique chapter on semigroup theory of linear operators that brings together advanced concepts and techniques which are usually treated independently. The material on delay systems and structural operators has not yet appeared anywhere in book form.
Low-Complexity Controllers for Time-Delay Systems
Low-Complexity Controllers for Time-Delay Systems - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Low-Complexity Controllers for Time-Delay Systems write by Alexandre Seuret. This book was released on 2014-04-12. Low-Complexity Controllers for Time-Delay Systems available in PDF, EPUB and Kindle. This volume in the newly established series Advances in Delays and Dynamics (ADD@S) provides a collection of recent results on the design and analysis of Low Complexity Controllers for Time Delay Systems. A widely used indirect method to obtain low order controllers for time delay systems is to design a controller for the reduced order model of the plant. In the dual indirect approach, an infinite dimensional controller is designed first for the original plant model; then, the controller is approximated by keeping track of the degradation in performance and stability robustness measures. The present volume includes new techniques used at different stages of the indirect approach. It also includes new direct design methods for fixed structure and low order controllers. On the other hand, what is meant by low complexity controller is not necessarily low order controller. For example, Smith predictor or similar type of controllers include a copy of the plant internally in the controller, so they are technically infinite dimensional. However, they have very nice numerical properties from the point of reliable implementation. Therefore, such predictor-based controllers are considered as low complexity. This book includes new predictor-based design techniques, with several application examples.
Control of Distributed Parameter Systems 1989
Control of Distributed Parameter Systems 1989 - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Control of Distributed Parameter Systems 1989 write by M. Amouroux. This book was released on 2014-06-28. Control of Distributed Parameter Systems 1989 available in PDF, EPUB and Kindle. This volume presents state-of-the-art reports on the theory, and current and future applications of control of distributed parameter systems. The papers cover the progress not only in traditional methodology and pure research in control theory, but also the rapid growth of its importance for different applications. This title will be of interest to researchers working in the areas of mathematics, automatic control, computer science and engineering.
