Download or read book Eco inspired Robust Control Design for Linear Dynamical Systems with Applications written by Nagini Devarakonda and published by . This book was released on 2011 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Recently, the idea of using Ecological Sign Stability approach for designing robust controllers for engineering systems has attracted attention with promising results. In this work, continued research on this topic is presented. It is well known that, in the field of control systems, key to a good controller design is the choice of the appropriate nominal system. Since it is assumed that the perturbations are about this nominal, the extent of allowed perturbation to maintain the stability and/or performance very much depends on this 'nominal' system. Therefore, it is evident that this nominal system must have superior robustness properties. Incorporating certain robustness measures proposed in the literature, control design techniques have been realized in state space framework. However, the variety of controllers in state space framework is not as large as that of robust control design methods in frequency domain. Even these very few methods tend to be complex and demand some specific structure to the real parameter uncertainty (such as matching conditions). Overall, the success of all these methods for application to complex aerospace systems is still a subject of debate. Hence, there is still significant interest in designing robust controllers which can perform better than the existing controllers. Addressing these issues, current research proposes that the stability robustness measures for parameter perturbation are considerably improved if the 'nominal' system is taken (or driven) to be a 'sign stable' system. Motivated by this observation, a new method for designing a robust controller for linear uncertain state space systems is proposed. The novelty of this research lies in the incorporation of ecological principles in order to design robust controllers for engineering systems. It is observed that an ecological perspective gives better understanding of the dynamics of the open and closed loop system (nominal) matrices. One of the attractive features of this controller is that the robustness measure, enters the control design in an explicit manner. The result of implementing controllers inspired by ecological principles simplifies the control algorithm and for certain dynamic systems, greatly reduces computational effort required in the synthesis of the controller. Accurate synthesis of the control algorithms results in 'most robust' nominal system (closed loop system). Variations of this control design method that address different categories of uncertainty are presented. The resulting control design methods are illustrated with application to aircraft and spacecraft flight control and aircraft turbine engine control.

Download or read book Eco inspired Robust Control Design Algorithm for Linear Systems with Real Parameter Uncertainty written by Preeti Sar and published by . This book was released on 2013 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: The work in this thesis addresses the issue of robust control design of linear dynamical systems with real parameter uncertainty. The proposed robust control design algorithm focuses on the control design to achieve a specific structure of the closed loop system matrix that guarantees as high a stability robustness index as possible without the need for any information on the perturbation data. This is achieved by devising a method to and the appropriate gain which would give us this closed loop system structure with high stability robustness index. The proposed robust control design in which the structure of closed loop system matrix plays a central role, is inspired by the principles of ecology, wherein the desired closed loop matrix consists of self regulated species with predator-pray interactions among these species. A set of matrices labelled Target Pseudo symmetric Matrices are used as the class of desirable closed loop system matrices. Based on these matrices, which capture the maximum achievable robustness index, robust control design is carried out such that the eventual closed loop system possesses a stability robustness index as close to the maximum achievable index as possible. A robust control design algorithm is presented, which is relatively simple to implement. This algorithm tries to and a gain which will give us a closed loop system matrix with the maximum achievable robustness index. The algorithm is illustrated with examples.

Download or read book Eco inspired Robust Control Design for Linear Time invariant Systems with Real Parameter Uncertainty written by Rohan V. Chandavarkar and published by . This book was released on 2013 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: This thesis addresses the importance and issues of the robust control design of linear time-invariant (LTI) systems with real-time parameter uncertainties. It is known that most of the existing robust control techniques are fairly conservative when dealing with real time parameter uncertainty. Also, majority of these existing techniques use control gains that are essentially functions of the perturbation information. The robust control design algorithm proposed in this thesis differs from these traditional techniques by focusing on the control design in achieving a specific structure of the closed loop system matrix that guarantees a maximum stability robustness index as possible without the using any of the perturbation information. The determination of this specific desired structure of closed loop system matrix forms the focal point of this algoithm and is inspired by already existing principles in the field of ecology. Using this ecological backdrop, the desired closed loop matrix is determined to contain self regulated species with predator-prey interactions among these species. In matrix nomenclature, such a set of matrices are labelled as Target Pseudo-Symmetric (TPS) matrices and hence form the class of desirable closed-loop system matrices. Based on these TPS matrices, which capture the maximum robustness index for any LTI system, a robust control design is carried out such that the final closed loop system possesses a robustness index as close to this maximum as possible. The robust control design algorithm presented is based on minimizing the norm of an implicit error and is supported with several illustrative examples. This eco-inspired robust control algorithm exemplifies the strong correlation that exists between natural systems and engineering systems. Hence, the main goal of this thesis is to aid in the revival of research in the field of robust control using insights from ecological principles.

Download or read book Robust Control of Linear Dynamical Systems written by P. C. Chandrasekharan and published by Academic Press. This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past decade, significant advances have taken place in the area of robust control. Unfortunately, many of these developments are scattered in research publications and are accessible only to a selected group of experts. Often, the original ideas and the motivations for pursuing a particular path are lost in a maze of mathematical formalism. Robust Control of Linear Dynamical Systems is intended to bring these important ideas and techniques to the attention of a wider audience. The author uses a step-by-step approach to guide the reader through this sometimes difficult material. Mathematical rigor is balanced with readability to provide the reader with an easy understanding of the important aspects of robust control. The book is suitable as a textbook for students in engineering with some previous exposure to linear system theory. Itis equally appropriate as a self-study guide for those interested in acquiring a deeper knowledge of robust control design. . It is essentially self contained and the principal concepts involved have been developed right from the fundamentals. . While the main emphasis is on state space, the operator and functional formalism has been given adequate weight. . One chapter has been exclusively devoted to Kharitonov theory and related developments. . The pedagogic nature of the book has been further enhanced by providing exercises at the end of every chapter.

Download or read book Attractive Ellipsoids in Robust Control written by Alexander Poznyak and published by Springer. This book was released on 2014-09-29 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph introduces a newly developed robust-control design technique for a wide class of continuous-time dynamical systems called the “attractive ellipsoid method.” Along with a coherent introduction to the proposed control design and related topics, the monograph studies nonlinear affine control systems in the presence of uncertainty and presents a constructive and easily implementable control strategy that guarantees certain stability properties. The authors discuss linear-style feedback control synthesis in the context of the above-mentioned systems. The development and physical implementation of high-performance robust-feedback controllers that work in the absence of complete information is addressed, with numerous examples to illustrate how to apply the attractive ellipsoid method to mechanical and electromechanical systems. While theorems are proved systematically, the emphasis is on understanding and applying the theory to real-world situations. Attractive Ellipsoids in Robust Control will appeal to undergraduate and graduate students with a background in modern systems theory as well as researchers in the fields of control engineering and applied mathematics.

Download or read book Robust Control written by Andrzej Bartoszewicz and published by BoD – Books on Demand. This book was released on 2011-04-11 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this monograph is to present a broad range of well worked out, recent theoretical and application studies in the field of robust control system analysis and design. The contributions presented here include but are not limited to robust PID, H-infinity, sliding mode, fault tolerant, fuzzy and QFT based control systems. They advance the current progress in the field, and motivate and encourage new ideas and solutions in the robust control area.

Download or read book Recent Advances in Robust Control written by Andreas Müller and published by BoD – Books on Demand. This book was released on 2011-11-07 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: Robust control has been a topic of active research in the last three decades culminating in H_2/H_\infty and \mu design methods followed by research on parametric robustness, initially motivated by Kharitonov's theorem, the extension to non-linear time delay systems, and other more recent methods. The two volumes of Recent Advances in Robust Control give a selective overview of recent theoretical developments and present selected application examples. The volumes comprise 39 contributions covering various theoretical aspects as well as different application areas. The first volume covers selected problems in the theory of robust control and its application to robotic and electromechanical systems. The second volume is dedicated to special topics in robust control and problem specific solutions. Recent Advances in Robust Control will be a valuable reference for those interested in the recent theoretical advances and for researchers working in the broad field of robotics and mechatronics.

Download or read book Linear Robust Control written by Michael Green and published by Courier Corporation. This book was released on 2012-09-19 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Recent years have witnessed enormous strides in the field of robust control of dynamical systems -- unfortunately, many of these developments have only been accessible to a small group of experts. In this text for students and control engineers, the authors examines all of these advances, providing an in-depth and exhaustive examination of modern optimal and robust control. "--

Download or read book Control and Dynamic Systems V50 Robust Control System Techniques and Applications written by C.T. Leonides and published by Elsevier. This book was released on 2012-12-02 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Control and Dynamic Systems: Advances in Theory and Applications, Volume 50: Robust Control System Techniques and Applications, Part 1 of 2 is a two-volume sequence devoted to the issues and application of robust control systems techniques. This volume is composed of 10 chapters and begins with a presentation of the important techniques for dealing with conflicting design objectives in control systems. The subsequent chapters describe the robustness techniques of systems using differential-difference equations; the design of a wide class of robust nonlinear systems, the techniques for dealing with the problems resulting from the use of observers in robust systems design, and the effective techniques for the robust control on non-linear time varying of tracking control systems with uncertainties. These topics are followed by discussions of the effective techniques for the robust control on non-linear time varying of tracking control systems with uncertainties and for incorporating adaptive control techniques into a (non-adaptive) robust control design. Other chapters present techniques for achieving exponential and robust stability for a rather general class of nonlinear systems, techniques in modeling uncertain dynamics for robust control systems design, and techniques for the optimal synthesis of these systems. The last chapters provide a generalized eigenproblem solution for both singular and nonsingular system cases. These chapters also look into the stability robustness design for discrete-time systems. This book will be of value to process and systems engineers, designers, and researchers.

Download or read book Control and Dynamic Systems V51 Robust Control System Techniques and Applications written by C.T. Leonides and published by Elsevier. This book was released on 2012-12-02 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: Control and Dynamic Systems: Advances in Theory and Application, Volume 51: Robust Control System Techniques and Applications Part 2 of 2 discusses system robustness techniques. This volume presents a comprehensive treatment of robust system techniques in nonlinear, linear, and multilinear interval systems. It also covers techniques for dealing with system disturbances, system modeling approximations, and parameter uncertainties. This volume ends by reviewing robustness techniques for systems with structured state space uncertainty. This volume will be of great use as a reference source for mechanical and electrical engineers.

Download or read book Robust Control Design written by Theodore E. Djaferis and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: To a large extent, our lives on this earth depend on systems that operate auto matically. Manysuchsystems can be found in nature and others are man made. These systems can be biological, electrical, mechanical, chemical, or ecological, to namejust a few categories. Our human body is full ofsystems whose conti nued automatic operation is vital for our existence. On a daily basis we come in contact with man made systems whose automatic operation ensures increa sed productivity, promotes economic development and improves the quality of life. A primary component that is responsible for the automatic operation of a system is a device or mechanism called the controller. In man made systems one must first design and then implement such a controller either as a piece of hardware or as software code in a computer. The safe and efficient automatic operation of such systems is testimony to the success of control theorists and practitioners over the years. This book presents new methods {or controller design. The process ofdeveloping a controller or control strategy can be dramatically improved if one can generate an appropriate dynamic model for the system under consideration. Robust control design deals with the question of how to develop such controllers for system models with uncertainty. In many cases dynamic models can be expressed in terms oflinear, time invariant differential equations or transfer functions.

Download or read book Control and Dynamic Systems V56 Digital and Numeric Techniques and Their Application in Control Systems written by C.T. Leonides and published by Academic Press. This book was released on 2012-12-02 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: Control and Dynamic Systems: Advances in Theory and Applications, Volume 56: Digital and Numeric Techniques and their Applications in Control Systems, Part 2 of 2 covers the significant developments in digital and numerical techniques for the analysis and design of modern complex control systems. This volume is composed of 12 chapters and starts with a description of the design techniques of linear constrained discrete-time control systems. The subsequent chapters describe the techniques dealing with robust real-time system identification, the adaptive control algorithms, and the utilization of methods from generalized interpolation and operator theory to deal with a wide range of problems in robust control. These topics are followed by reviews f the decentralized control design for interconnected uncertain systems; the computation of frequency response of descriptor systems by rational interpolation; the techniques for the synthesis of multivariable feedback control laws; and the effect of the initial condition in state estimation for discrete-time linear systems. Other chapters illustrate practical, efficient, and reliable numerical algorithms for robust multivariable control design of linear time-invariant systems, as well as a complete analysis of closed-loop transfer recovery in discrete-time systems using observer-based controllers. The last chapters provide the techniques in robust policy-making in the global economic environment and the implications of robust control techniques for continuous-time systems. This book will prove useful to process, control, systems, and design engineers.

Download or read book Mathematical Control Design for Linear Systems Practice Book written by Cristiano Maria Verrelli and published by Società Editrice Esculapio. This book was released on 2023-11-06 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical Control Design for Linear Systems - Practice book is a concise exercise book for students of applied mathematics and engineering who are interested in testing their basic abilities in the design of linear control algorithms, as well as in the analysis of dynamical systems described by linear ordinary differential equations. It can be used as a useful tool to recap the basic concepts of systems theory and automatic control before tackling more advanced control courses. Just a fine selection of exercises that own a physical flavor are reported. Matlab codes and figures are included.

Download or read book Robust Control System Design written by Chia-Chi Tsui and published by CRC Press. This book was released on 2003-12-11 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: Robust Control System Design: Advanced State Space Techniques, Second Edition expands upon a groundbreaking and combinatorial approach to state space control system design that fully realizes the critical loop transfer function and robustness properties of state/generalized state feedback control. This edition offers many new examples and exercises to illustrate and clarify new design concepts, approaches, and procedures while highlighting the fact that state/generalized state feedback control can improve system performance and robustness more effectively than other forms of control. Revised and expanded throughout, the second edition presents an improved eigenstructure assignment design method that enhances system performance and robustness more directly and effectively and allows for adjustment of design formulations based on design testing and simulation. The author proposes the systematic controller order adjustment for the tradeoff between performance and robustness based on the complete unification of the state feedback control and static output feedback control. The book also utilizes a more accurate robust stability measure to guide control designs.

Download or read book Robust Nonlinear Control Design written by Randy A. Freeman and published by Springer Science & Business Media. This book was released on 2009-05-21 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: This softcover book summarizes Lyapunov design techniques for nonlinear systems and raises important issues concerning large-signal robustness and performance. The authors have been the first to address some of these issues, and they report their findings in this text. The researcher who wishes to enter the field of robust nonlinear control could use this book as a source of new research topics. For those already active in the field, the book may serve as a reference to a recent body of significant work. Finally, the design engineer faced with a nonlinear control problem will benefit from the techniques presented here.

Download or read book Robust Control written by Farhad Assadian and published by John Wiley & Sons. This book was released on 2022-01-28 with total page 946 pages. Available in PDF, EPUB and Kindle. Book excerpt: Robust Control Robust Control Youla Parameterization Approach Discover efficient methods for designing robust control systems In Robust Control: Youla Parameterization Approach, accomplished engineers Dr. Farhad Assadian and Kevin R. Mallon deliver an insightful treatment of robust control system design that does not require a theoretical background in controls. The authors connect classical control theory to modern control concepts using the Youla method and offer practical examples from the automotive industry for designing control systems with the Youla method. The book demonstrates that feedback control can be elegantly designed in the frequency domain using the Youla parameterization approach. It offers deep insights into the many practical applications from utilizing this technique in both Single Input Single Output (SISO) and Multiple Input Multiple Output (MIMO) design. Finally, the book provides an estimation technique using Youla parameterization and controller output observer for the first time. Robust Control offers readers: A thorough introduction to a review of the Laplace Transform, including singularity functions and transfer functions Comprehensive explorations of the response of linear, time-invariant, and dynamic systems, as well as feedback principles and feedback design for SISO Practical discussions of norms and feedback systems, feedback design by the optimization of closed-loop norms, and estimation design for SISO using the parameterization approach In-depth examinations of MIMO control and multivariable transfer function properties Perfect for industrial researchers and engineers working with control systems, Robust Control: Youla Parameterization Approach is also an indispensable resource for graduate students in mechanical, aerospace, electrical, and chemical engineering.

Download or read book Eco inspired Robustness Analysis of Linear Uncertain Systems Using Elemental Sensitivities written by Ketan Kiran Dande and published by . This book was released on 2012 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Robust control of linear state space systems is an important area since uncertainties in the system can result in unacceptable system behavior. Before starting actual control design, analyzing the system to obtain detailed information about its characteristics always helps in achieving better results. This research is an attempt into understanding more about the robustness of linear uncertain systems based on their feedback structure. One of the basic reason for introducing feedback in control design is uncertainty and hence, understanding the feedback structure of a system can give useful insights in its robustness properties. Individual elements in a system interact with each other to form feedback cycles, thus forming feedback structure of the system. Ecological systems are shown to have robustness properties since they tend to be stable under the influence of external perturbations. It would be interesting to see if such principles in ecology could be useful in designing robust engineering control systems. To address these topics, the current research investigates applicability of an ecological method of finding out sensitivity of a system to its model structure into robustness analysis of engineering systems. This method has been modified and improved to address the robustness issue in linear uncertain systems. Moreover, new robustness indices have been proposed that measure the robustness of a system based on sensitivity of elements in it to its stability. Thus, this research finds ecological principles to be very helpful in designing robust control systems and stresses the importance of research to further investigate this idea.