Control of Sandwich Nonlinear Systems


Book Description

V VII X Table of Contents Table of Contents XI XII Table of Contents A. Taware and G. Tao: Control of Sandwich Nonlinear Systems, LNCIS 288, pp. 1-8, 2003. Springer-Verlag Berlin Heidelberg 2003 A. Taware and G. Tao: Control of Sandwich Nonlinear Systems, LNCIS 288, pp. 9-16, 2003. Springer-Verlag Berlin Heidelberg 2003 x(t), pilot valve piston position Return Pressure Source Return Load M, b y(t) A. Taware and G. Tao: Control of Sandwich Nonlinear Systems, LNCIS 288, pp. 17-28, 2003. Springer-Verlag Berlin Heidelberg 2003 load displacement, y(t) 3 2 1 0 ?1 ?2 ?3 0 10 20 30 40 50 60 70 80 90 100 solid?without DZ, dotted? with DZ Load displacement, y(t) 0.4 0.2 0 ?0.2 ?0.4 ?0.6 ?0.8 10 20 30 40 50 60 70 80 90 100 solid?without DZ, dotted?with DZ, dashdot?compensated Load displacement, y(t) 3 2 1 0 ?1 ?2 ?3 0 10 20 30 40 50 60 70 80 90 100 Control input, x(t) 0.8 0.6 0.4 0.2 0 ?0.2 ?0.4 ?0.6 0 10 20 30 40 50 60 70 80 90 100 solid?without DZ, dotted?with DZ, dashdot?compensated Load displacement, y(t) 0.6 0.4 0.2 0 ?0.2 ?0.4 ?0.6 ?0.8 0 10 20 30 40 50 60 70 80 90 100 solid?without DZ, dotted?with DZ, dashdot?compensated A. Taware and G. Tao: Control of Sandwich Nonlinear Systems, LNCIS 288, pp. 29-54, 2003. Springer-Verlag Berlin Heidelberg 2003




Identification of Nonlinear Systems Using Neural Networks and Polynomial Models


Book Description

This monograph systematically presents the existing identification methods of nonlinear systems using the block-oriented approach It surveys various known approaches to the identification of Wiener and Hammerstein systems which are applicable to both neural network and polynomial models. The book gives a comparative study of their gradient approximation accuracy, computational complexity, and convergence rates and furthermore presents some new and original methods concerning the model parameter adjusting with gradient-based techniques. "Identification of Nonlinear Systems Using Neural Networks and Polynomal Models" is useful for researchers, engineers and graduate students in nonlinear systems and neural network theory.




Adaptive Control


Book Description

Adaptive control has been a remarkable field for industrial and academic research since 1950s. Since more and more adaptive algorithms are applied in various control applications, it is becoming very important for practical implementation. As it can be confirmed from the increasing number of conferences and journals on adaptive control topics, it is certain that the adaptive control is a significant guidance for technology development.The authors the chapters in this book are professionals in their areas and their recent research results are presented in this book which will also provide new ideas for improved performance of various control application problems.




Adaptive Control Design and Analysis


Book Description

A systematic and unified presentation of the fundamentals of adaptive control theory in both continuous time and discrete time Today, adaptive control theory has grown to be a rigorous and mature discipline. As the advantages of adaptive systems for developing advanced applications grow apparent, adaptive control is becoming more popular in many fields of engineering and science. Using a simple, balanced, and harmonious style, this book provides a convenient introduction to the subject and improves one's understanding of adaptive control theory. Adaptive Control Design and Analysis features: Introduction to systems and control Stability, operator norms, and signal convergence Adaptive parameter estimation State feedback adaptive control designs Parametrization of state observers for adaptive control Unified continuous and discrete-time adaptive control L1+a robustness theory for adaptive systems Direct and indirect adaptive control designs Benchmark comparison study of adaptive control designs Multivariate adaptive control Nonlinear adaptive control Adaptive compensation of actuator nonlinearities End-of-chapter discussion, problems, and advanced topics As either a textbook or reference, this self-contained tutorial of adaptive control design and analysis is ideal for practicing engineers, researchers, and graduate students alike.




Theory of the Non-linear Analog Phase Locked Loop


Book Description

This book develops for the first time a complete and connected nonlinear theory for the analog Phase-Locked Loop (PLL) which clarifies the obscure points of its complex non-linear behaviour. The book suggests new non-linear models for the PLL components and applies the averaging method to analyse PLL. The book presents the physical interpretation of the PLL operation, locates the difficulties presented by its operation and suggests solutions to overcome these problems. Finally it provides closed form expressions for all the important measures of the PLL and proposes new design criteria.




Internal and External Stabilization of Linear Systems with Constraints


Book Description

Unifying two decades of research, this book is the first to establish a comprehensive foundation for a systematic analysis and design of linear systems with general state and input constraints. For such systems, which can be used as models for most nonlinear systems, the issues of stability, controller design, additonal constraints, and satisfactory performance are addressed. The book is an excellent reference for practicing engineers, graduate students, and researchers in control systems theory and design. It may also serve as an advanced graduate text for a course or a seminar in nonlinear control systems theory and design in applied mathematics or engineering departments. Minimal prerequisites include a first graduate course in state-space methods as well as a first course in control systems design.




Positive Systems: Theory and Applications


Book Description

The proceedings of the First Multidisciplinary International Symposium on Positive Systems Theory and Applications (POSTA 2003) held in Rome, Italy, August 28-30, 2003. Positive Systems are systems in which the relevant variables assume nonnegative values. These systems are quite common in applications where variables represent positive quantities such as populations, goods, money, time, data packets flowing in a network, densities of chemical species, probabilities, etc. The aim of the symposium was to join together researchers working in the different areas related to positive systems such as telecommunications, economy, biomedicine, chemistry and physics in order to provide a multidisciplinary forum where they have the opportunity to exchange ideas and compare results in a unifying framework.




Explicit Stability Conditions for Continuous Systems


Book Description

Explicit Stability Conditions for Continuous Systems deals with non-autonomous linear and nonlinear continuous finite dimensional systems. Explicit conditions for the asymptotic, absolute, input-to-state and orbital stabilities are discussed. This monograph provides new tools for specialists in control system theory and stability theory of ordinary differential equations, with a special emphasis on the Aizerman problem. A systematic exposition of the approach to stability analysis based on estimates for matrix-valued functions is suggested and various classes of systems are investigated from a unified viewpoint.




Realization Theory of Discrete-Time Dynamical Systems


Book Description

This monograph extends Realization Theory to the discrete-time domain. It includes new results and constructs a new and very wide inclusion relation for various non-linear dynamical systems. After establishing some features of discrete-time dynamical systems it presents results concerning systems which are proposed by the authors for the first time. They introduce General Dynamical Systems, Linear Representation Systems, Affine Dynamical Systems, Pseudo Linear Systems, Almost Linear Systems and So-called Linear Systems for discrete-time and demonstrate the relationship between them and the other dynamical systems. This book is intended for graduate students and researchers who study control theory.




Hybrid Estimation of Complex Systems


Book Description

This monograph provides a tool-set for hybrid estimation that can successfully monitor the behavior of complex artifacts with a large number of possible operational and failure modes such as production plants, automotive or aeronautic systems, and autonomous robots. For this purpose, ideas from the fields of System Theory and Artificial Intelligence are taken and hybrid estimation is reformulated as a search problem. This allows to focus the estimation onto highly probably operational modes, without missing symptoms that might be hidden among the noise in the system. Additionally a novel approach to continue hybrid estimation in the presence of unknown behavioral modes and to automate system analysis and synthesis tasks for on-line operation are presented. This leads to a flexible model-based hybrid estimation scheme for complex artifacts that robustly copes with unforeseen situations.