Robust Control System Networks

How to Achieve Reliable Control After Stuxnet

Author: Ralph Langner

Publisher: N.A

ISBN: 9781606503003

Category: Computers

Page: 206

View: 5274

The Stuxnet computer virus, originally discovered in July 2010, qualified as a turning point for control system security. While the malware did not cause destructive damage outside its designated target, it hit the Western world like the Sputnik shock. The sophistication and aggressiveness of this computer virus was at a level that few people had anticipated. It simply popped up without warning, after 10 years of silence following the first malicious amateur-style cyber attack on wastewater control systems in Australia. Compared to office IT malware as we know it, this would be like going from 1980s-style password guessing to botnets in one step. It was, indeed, shocking. Instead of a learning curve for both the attackers and the defenders that the general development and trend of malware had been experiencing in the IT world, there was one big leap. Even if they had wanted to, operators of potential targets in critical infrastructure and in the private sector were not able to perform a similar leap in defense and protection. Despite years, reaching back to the turn of the millennium, of efforts and investments in control system security, governmental programs and organizations, industry standards, workgroups, conferences, risk assessments, and mitigation projects, the industrialized nations continue to face a significant threat from post-Stuxnet malware for which they are by no means prepared.

Robust Control for Uncertain Networked Control Systems with Random Delays

Author: Dan Huang,Sing Kiong Nguang

Publisher: Springer Science & Business Media

ISBN: 1848826788

Category: Technology & Engineering

Page: 168

View: 4807

"Robust Control for Uncertain Networked Control Systems with Random Delays" addresses the problem of analysis and design of networked control systems when the communication delays are varying in a random fashion. The random nature of the time delays is typical for commercially used networks, such as a DeviceNet (which is a controller area network) and Ethernet network. The main technique used in this book is based on the Lyapunov-Razumikhin method, which results in delay-dependent controllers. The existence of such controllers and fault estimators are given in terms of the solvability of bilinear matrix inequalities. Iterative algorithms are proposed to change this non-convex problem into quasi-convex optimization problems, which can be solved effectively by available mathematical tools. Finally, to demonstrate the effectiveness and advantages of the proposed design method in the book, numerical examples are given in each designed control system.

Adaptive Robust Control Systems

Author: Anh Tuan Le

Publisher: BoD – Books on Demand

ISBN: 9535137964

Category: Technology & Engineering

Page: 362

View: 2205

This book focuses on the applications of robust and adaptive control approaches to practical systems. The proposed control systems hold two important features: (1) The system is robust with the variation in plant parameters and disturbances (2) The system adapts to parametric uncertainties even in the unknown plant structure by self-training and self-estimating the unknown factors. The various kinds of robust adaptive controls represented in this book are composed of sliding mode control, model-reference adaptive control, gain-scheduling, H-infinity, model-predictive control, fuzzy logic, neural networks, machine learning, and so on. The control objects are very abundant, from cranes, aircrafts, and wind turbines to automobile, medical and sport machines, combustion engines, and electrical machines.

Robust Control of Linear Descriptor Systems

Author: Yu Feng,Mohamed Yagoubi

Publisher: Springer

ISBN: 9811036772

Category: Technology & Engineering

Page: 142

View: 5143

This book develops original results regarding singular dynamic systems following two different paths. The first consists of generalizing results from classical state-space cases to linear descriptor systems, such as dilated linear matrix inequality (LMI) characterizations for descriptor systems and performance control under regulation constraints. The second is a new path, which considers descriptor systems as a powerful tool for conceiving new control laws, understanding and deciphering some controller’s architecture and even homogenizing different—existing—ways of obtaining some new and/or known results for state-space systems. The book also highlights the comprehensive control problem for descriptor systems as an example of using the descriptor framework in order to transform a non-standard control problem into a classic stabilization control problem. In another section, an accurate solution is derived for the sensitivity constrained linear optimal control also using the descriptor framework. The book is intended for graduate and postgraduate students, as well as researchers in the field of systems and control theory.

Robust Control Design for Active Driver Assistance Systems

A Linear-Parameter-Varying Approach

Author: Péter Gáspár,Zoltán Szabó,József Bokor,Balazs Nemeth

Publisher: Springer

ISBN: 3319461265

Category: Technology & Engineering

Page: 293

View: 7739

This monograph focuses on control methods that influence vehicle dynamics to assist the driver in enhancing passenger comfort, road holding, efficiency and safety of transport, etc., while maintaining the driver’s ability to override that assistance. On individual-vehicle-component level the control problem is formulated and solved by a unified modelling and design method provided by the linear parameter varying (LPV) framework. The global behaviour desired is achieved by a judicious interplay between the individual components, guaranteed by an integrated control mechanism. The integrated control problem is also formalized and solved in the LPV framework. Most important among the ideas expounded in the book are: application of the LPV paradigm in the modelling and control design methodology; application of the robust LPV design as a unified framework for setting control tasks related to active driver assistance; formulation and solution proposals for the integrated vehicle control problem; proposal for a reconfigurable and fault-tolerant control architecture; formulation and solution proposals for the plug-and-play concept; detailed case studies. Robust Control Design for Active Vehicle Assistance Systems will be of interest to academic researchers and graduate students interested in automotive control and to control and mechanical engineers working in the automotive industry. Advances in Industrial Control aims to report and encourage the transfer of technology in control engineering. The rapid development of control technology has an impact on all areas of the control discipline. The series offers an opportunity for researchers to present an extended exposition of new work in all aspects of industrial control.

Advances in Electronic Engineering, Communication and Management Vol.2

Proceedings of the EECM 2011 International Conference on Electronic Engineering, Communication and Management, held December 24-25, 2011, Beijing, China

Author: David Jin,Sally Lin

Publisher: Springer Science & Business Media

ISBN: 3642272967

Category: Technology & Engineering

Page: 721

View: 9104

This volume presents the main results of 2011 International Conference on Electronic Engineering, Communication and Management (EECM2011) held December 24-25, 2011, Beijing China. The EECM2011 is an integrated conference providing a valuable opportunity for researchers, scholars and scientists to exchange their ideas face to face together. The main focus of the EECM 2011 and the present 2 volumes “Advances in Electronic Engineering, Communication and Management” is on Power Engineering, Electrical engineering applications, Electrical machines, as well as Communication and Information Systems Engineering. This volume presents the main results of 2011 International Conference on Electronic Engineering, Communication and Management (EECM2011) held December 24-25, 2011, Beijing China. The EECM2011 is an integrated conference providing a valuable opportunity for researchers, scholars and scientists to exchange their ideas face to face together. The main focus of the EECM 2011 and the present 2 volumes “Advances in Electronic Engineering, Communication and Management” is on Power Engineering, Electrical engineering applications, Electrical machines, as well as Communication and Information Systems Engineering.

Robust Control Systems with Genetic Algorithms

Author: Mo Jamshidi,Renato A. Krohling,Leandro dos S. Coelho,Peter J. Fleming

Publisher: CRC Press

ISBN: 1420058347

Category: Technology & Engineering

Page: 232

View: 410

In recent years, new paradigms have emerged to replace-or augment-the traditional, mathematically based approaches to optimization. The most powerful of these are genetic algorithms (GA), inspired by natural selection, and genetic programming, an extension of GAs based on the optimization of symbolic codes. Robust Control Systems with Genetic Algorithms builds a bridge between genetic algorithms and the design of robust control systems. After laying a foundation in the basics of GAs and genetic programming, it demonstrates the power of these new tools for developing optimal robust controllers for linear control systems, optimal disturbance rejection controllers, and predictive and variable structure control. It also explores the application of hybrid approaches: how to enhance genetic algorithms and programming with fuzzy logic to design intelligent control systems. The authors consider a variety of applications, such as the optimal control of robotic manipulators, flexible links and jet engines, and illustrate a multi-objective, genetic algorithm approach to the design of robust controllers with a gasification plant case study. The authors are all masters in the field and clearly show the effectiveness of GA techniques. Their presentation is your first opportunity to fully explore this cutting-edge approach to robust optimal control system design and exploit its methods for your own applications.

Advances in Information Technology and Education

International Conference, CSE 2011, Qingdao, China, July 9-10, 2011, Proceedings

Author: Honghua Tan,Mark Zhou

Publisher: Springer Science & Business Media

ISBN: 3642224172

Category: Computers

Page: 605

View: 1157

This two-volume set (CCIS 201 and CCIS 202) constitutes the refereed proceedings of the International Conference on Computer Science and Education, CSE 2011, held in Qingdao, China, in July 2011. The 164 revised full papers presented in both volumes were carefully reviewed and selected from a large number of submissions. The papers address a large number of research topics and applications: from artificial intelligence to computers and information technology; from education systems to methods research and other related issues; such as: database technology, computer architecture, software engineering, computer graphics, control technology, systems engineering, network, communication, and other advanced technology, computer education, and life-long education.

Control and Dynamic Systems V51: Robust Control System Techniques and Applications

Advances in Theory and Applications

Author: C.T. Leonides

Publisher: Elsevier

ISBN: 0323163068

Category: Technology & Engineering

Page: 490

View: 2623

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.

Robust Control in Power Systems

Author: Bikash Pal,Balarko Chaudhuri

Publisher: Springer Science & Business Media

ISBN: 0387259503

Category: Technology & Engineering

Page: 190

View: 1274

Robust Control in Power Systems deals with the applications of new techniques in linear system theory to control low frequency oscillations in power systems. The book specifically focuses on the analysis and damping of inter-area oscillations in the systems which are in the range of 0.2-1 Hz. The damping control action is injected through high power electronic devices known as flexible AC transmission system (FACTS) controllers. Three commonly used FACTS controllers: controllable series capacitors (CSCs) controllable phase shifters (CPSs) and static var compensators (SVCs) have been used in this book to control the inter-area oscillations. The overview of linear system theory from the perspective of power system control is explained through examples. The damping control design is formulated as norm optimization problem. The H_infinity, H2 norm of properly defined transfer functions are minimized in linear matrix inequalities (LMI) framework to obtain desired performance and stability robustness. Both centralized and decentralized control structures are used. Usually the transmission of feedback signal from a remote location encounters delays making it difficult to control the system. Smith predictor based approach has been successfully explored in this book as a solution to such a problem. Robust Control in Power Systems will be valuable to academicians in the areas of power, control and system theory, as well as professionals in the power industry.

Robust Control Engineering

Practical QFT Solutions

Author: Mario Garcia-Sanz

Publisher: CRC Press

ISBN: 1315394979

Category: Technology & Engineering

Page: 556

View: 9224

This book thoroughly covers the fundamentals of the QFT robust control, as well as practical control solutions, for unstable, time-delay, non-minimum phase or distributed parameter systems, plants with large model uncertainty, high-performance specifications, nonlinear components, multi-input multi-output characteristics or asymmetric topologies. The reader will discover practical applications through a collection of fifty successful, real world case studies and projects, in which the author has been involved during the last twenty-five years, including commercial wind turbines, wastewater treatment plants, power systems, satellites with flexible appendages, spacecraft, large radio telescopes, and industrial manufacturing systems. Furthermore, the book presents problems and projects with the popular QFT Control Toolbox (QFTCT) for MATLAB, which was developed by the author.

Robust Control for Grid Voltage Stability: High Penetration of Renewable Energy

Interfacing Conventional and Renewable Power Generation Resources

Author: Jahangir Hossain,Hemanshu Roy Pota

Publisher: Springer

ISBN: 9812871160

Category: Technology & Engineering

Page: 311

View: 600

This book makes the area of integration of renewable energy into the existing electricity grid accessible to engineers and researchers. This is a self-contained text which has models of power system devices and control theory necessary to understand and tune controllers in use currently. The new research in renewable energy integration is put into perspective by comparing the change in the system dynamics as compared to the traditional electricity grid. The emergence of the voltage stability problem is motivated by extensive examples. Various methods to mitigate this problem are discussed bringing out their merits clearly. As a solution to the voltage stability problem, the book covers the use of FACTS devices and basic control methods. An important contribution of this book is to introduce advanced control methods for voltage stability. It covers the application of output feedback methods with a special emphasis on how to bound modelling uncertainties and the use of robust control theory to design controllers for practical power systems. Special emphasis is given to designing controllers for FACTS devices to improve low-voltage ride-through capability of induction generators. As generally PV is connected in low voltage distribution area, this book also provides a systematic control design for the PV unit in distribution systems. The theory is amply illustrated with large IEEE Test systems with multiple generators and dynamic load. Controllers are designed using Matlab and tested using full system models in PSSE.

Robust Control for Nonlinear Time-Delay Systems

Author: Changchun Hua,Liuliu Zhang,Xinping Guan

Publisher: Springer

ISBN: 9811051313

Category: Technology & Engineering

Page: 300

View: 3946

This book reports on the latest findings concerning nonlinear control theory and applications. It presents novel work on several kinds of commonly encountered nonlinear time-delay systems, including those whose nonlinear terms satisfy high-order polynomial form or general nonlinear form, those with nonlinear input or a triangular structure, and so on. As such, the book will be of interest to university researchers, R&D engineers and graduate students in the fields of control theory and control engineering who wish to learn about the core principles, methods, algorithms, and applications of nonlinear time-delay systems.

Robust Control of Time-delay Systems

Author: Qing-Chang Zhong

Publisher: Springer Science & Business Media

ISBN: 1846282659

Category: Technology & Engineering

Page: 231

View: 2025

Recently, there have been significant developments in robust control of time-delay systems. This volume presents a systematic treatment of robust control for such systems in the frequency domain. The emphasis is on systems with a single input or output delay, although the delay-free part of the plant can be multi-input-multi-output, in which case the delays in different channels should be the same. The author covers the whole range of H-infinity control of time-delay systems: from controller parameterization implementation; from the Nehari problem to the four-block problem; from theoretical developments to practical issues. The major tools used are similarity transformation, the chain-scattering approach and J-spectral factorization. Self-contained, "Robust Control of Time-delay Systems" will interest control theorists and mathematicians working with time-delay systems. Its methodical approach will be of value to graduates studying general robust control theory or its applications in time-delay systems.

Nonlinear Control of Dynamic Networks

Author: Tengfei Liu,Zhong-Ping Jiang,David J. Hill

Publisher: CRC Press

ISBN: 1466584602

Category: Technology & Engineering

Page: 345

View: 2476

Significant progress has been made on nonlinear control systems in the past two decades. However, many of the existing nonlinear control methods cannot be readily used to cope with communication and networking issues without nontrivial modifications. For example, small quantization errors may cause the performance of a "well-designed" nonlinear control system to deteriorate. Motivated by the need for new tools to solve complex problems resulting from smart power grids, biological processes, distributed computing networks, transportation networks, robotic systems, and other cutting-edge control applications, Nonlinear Control of Dynamic Networks tackles newly arising theoretical and real-world challenges for stability analysis and control design, including nonlinearity, dimensionality, uncertainty, and information constraints as well as behaviors stemming from quantization, data-sampling, and impulses. Delivering a systematic review of the nonlinear small-gain theorems, the text: Supplies novel cyclic-small-gain theorems for large-scale nonlinear dynamic networks Offers a cyclic-small-gain framework for nonlinear control with static or dynamic quantization Contains a combination of cyclic-small-gain and set-valued map designs for robust control of nonlinear uncertain systems subject to sensor noise Presents a cyclic-small-gain result in directed graphs and distributed control of nonlinear multi-agent systems with fixed or dynamically changing topology Based on the authors’ recent research, Nonlinear Control of Dynamic Networks provides a unified framework for robust, quantized, and distributed control under information constraints. Suggesting avenues for further exploration, the book encourages readers to take into consideration more communication and networking issues in control designs to better handle the arising challenges.

Robust control

Author: Peter Dorato,IEEE Communications Society

Publisher: IEEE


Category: Science

Page: 519

View: 7943

A Course in Robust Control Theory

A Convex Approach

Author: Geir E. Dullerud,Fernando Paganini

Publisher: Springer Science & Business Media

ISBN: 1475732902

Category: Mathematics

Page: 419

View: 3637

During the 90s robust control theory has seen major advances and achieved a new maturity, centered around the notion of convexity. The goal of this book is to give a graduate-level course on this theory that emphasizes these new developments, but at the same time conveys the main principles and ubiquitous tools at the heart of the subject. Its pedagogical objectives are to introduce a coherent and unified framework for studying the theory, to provide students with the control-theoretic background required to read and contribute to the research literature, and to present the main ideas and demonstrations of the major results. The book will be of value to mathematical researchers and computer scientists, graduate students planning to do research in the area, and engineering practitioners requiring advanced control techniques.

Proceedings of the ... International Conference on Neural Networks

Author: Institute of Electrical and Electronics Engineers,ICNN (1997, Houston, Tex.),IEEE Neural Networks Council,IEEE Neural networks society,International Conference on Neural Networks,IEEE.,Institute of Electrical and Electronics Engineers Neural Networks Council,Shun-ichi Amari,World Congress on Computational Intelligence (1998, Anchorage, Alas.)

Publisher: N.A

ISBN: 9780780341234

Category: Neural computers

Page: 2270

View: 9817

Moderne Regelungssysteme

Author: Richard C. Dorf,Robert H. Bishop

Publisher: N.A

ISBN: 9783827373045


Page: 1166

View: 7519

Stability Analysis and Robust Control of Time-Delay Systems

Author: Min Wu,Yong He,Jin-Hua She

Publisher: Springer Science & Business Media

ISBN: 3642030378

Category: Science

Page: 335

View: 845

"Stability Analysis and Robust Control of Time-Delay Systems" focuses on essential aspects of this field, including the stability analysis, stabilization, control design, and filtering of various time-delay systems. Primarily based on the most recent research, this monograph presents all the above areas using a free-weighting matrix approach first developed by the authors. The effectiveness of this method and its advantages over other existing ones are proven theoretically and illustrated by means of various examples. The book will give readers an overview of the latest advances in this active research area and equip them with a pioneering method for studying time-delay systems. It will be of significant interest to researchers and practitioners engaged in automatic control engineering. Prof. Min Wu, senior member of the IEEE, works at the Central South University, China.