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# Robust Control. Theory and Applications

• ID: 4535283
• Book
• October 2016
• Region: Global
• 488 Pages
• John Wiley and Sons Ltd
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Comprehensive and up to date coverage of robust control theory and its application

Presented in a well–planned and logical way

Written by a respected leading author, with extensive experience in robust control

Accompanying website provides solutions manual and other supplementary material
Note: Product cover images may vary from those shown
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Preface xvii

List of Abbreviations xix

Notations xxi

1 Introduction 1

1.1 Engineering Background of Robust Control 1

1.2 Methodologies of Robust Control 4

1.3 A Brief History of Robust Control 8

2 Basics of Linear Algebra and Function Analysis 10

2.1 Trace, Determinant, Matrix Inverse, and Block Matrix 10

2.2 Elementary Linear Transformation of Matrix and Its Matrix Description 12

2.3 Linear Vector Space 14

2.4 Norm and Inner Product of Vector 18

2.5 Linear Subspace 22

2.6 Matrix and Linear Mapping 23

2.7 Eigenvalue and Eigenvector 28

2.8 Invariant Subspace 30

2.9 Pseudo–Inverse and Linear Matrix Equation 34

2.10 Quadratic Form and Positive Definite Matrix 35

2.11 Norm and Inner Product of Matrix 37

2.12 Singular Value and Singular Value Decomposition 40

2.13 Calculus of Vector and Matrix 43

2.14 Kronecker Product 44

2.15 Norm and Inner Product of Function 45

3 Basics of Convex Analysis and LMI 57

3.1 Convex Set and Convex Function 57

3.2 Introduction to LMI 72

3.3 Interior Point Method∗ 81

4 Fundamentals of Linear System 85

4.1 Structural Properties of Dynamic System 85

4.2 Stability 100

4.3 Lyapunov Equation 108

4.4 Linear Fractional Transformation 114

5 System Performance 119

5.1 Test Signal 120

5.3 Transient Response 130

5.4 Comparison of Open–Loop and Closed–Loop Controls 140

6 Stabilization of Linear Systems 148

6.1 State Feedback 148

6.2 Observer 160

6.3 Combined System and Separation Principle 167

7 Parametrization of Stabilizing Controllers 173

7.1 Generalized Feedback Control System 174

7.2 Parametrization of Controllers 178

7.3 Youla Parametrization 184

7.4 Structure of Closed–Loop System 186

7.5 2–Degree–of–Freedom System 188

8 Relation between Time Domain and Frequency Domain Properties 197

8.1 Parseval s Theorem 197

8.2 KYP Lemma 200

9 Algebraic Riccati Equation 215

9.1 Algorithm for Riccati Equation 215

9.2 Stabilizing Solution 218

9.3 Inner Function 223

10 Performance Limitation of Feedback Control 225

10.1 Preliminaries 226

10.2 Limitation on Achievable Closed–loop Transfer Function 228

10.3 Integral Relation 231

10.4 Limitation of Reference Tracking 237

11 Model Uncertainty 245

11.1 Model Uncertainty: Examples 245

11.2 Plant Set with Dynamic Uncertainty 248

11.3 Parametric System 253

11.4 Plant Set with Phase Information of Uncertainty 264

11.5 LPV Model and Nonlinear Systems 266

11.6 Robust Stability and Robust Performance 269

12 Robustness Analysis 1: Small–Gain Principle 272

12.1 Small–Gain Theorem 272

12.2 Robust Stability Criteria 276

12.3 Equivalence between H Performance and Robust Stability 277

12.4 Analysis of Robust Performance 279

12.5 Stability Radius of Norm–Bounded Parametric Systems 282

13 Robustness Analysis 2: Lyapunov Method 288

13.1 Overview of Lyapunov Stability Theory 288

13.3 Lur′e System 296

13.4 Passive Systems 307

14 Robustness Analysis 3: IQC Approach 312

14.1 Concept of IQC 312

14.2 IQC Theorem 314

14.3 Applications of IQC 316

14.4 Proof of IQC Theorem∗ 319

15 H2 Control 322

15.1 H2 Norm of Transfer Function 322

15.2 H2 Control Problem 329

15.3 Solution to Nonsingular H2 Control Problem 331

15.4 Proof of Nonsingular Solution 332

15.5 Singular H2 Control 335

15.6 Case Study: H2 Control of an RTP System 337

16 H Control 346

16.1 Control Problem and H Norm 346

16.2 H Control Problem 348

16.3 LMI Solution 1: Variable Elimination 349

16.4 LMI Solution 2: Variable Change 351

16.5 Design of Generalized Plant and Weighting Function 352

16.6 Case Study 354

16.7 Scaled H Control 355

17 Synthesis 360

17.1 Introduction to 360

17.2 Definition of and Its Implication 364

17.3 Properties of 365

17.4 Condition for Robust H Performance 368

17.5 D K Iteration Design 369

17.6 Case Study 371

18 Robust Control of Parametric Systems 375

18.1 Quadratic Stabilization of Polytopic Systems 375

18.2 Quadratic Stabilization of Norm–Bounded Parametric Systems 379

18.3 Robust H Control Design of Polytopic Systems 379

18.4 Robust H Control Design of Norm–Bounded Parametric Systems 382

19 Regional Pole Placement 384

19.1 Convex Region and Its Characterization 384

19.2 Condition for Regional Pole Placement 387

19.3 Composite LMI Region 392

19.4 Feedback Controller Design 394

19.5 Analysis of Robust Pole Placement 396

19.6 Robust Design of Regional Pole Placement 402

20 Gain–Scheduled Control 407

20.1 General Structure 407

20.2 LFT–Type Parametric Model 408

20.3 Case Study: Stabilization of a Unicycle Robot 414

20.4 Affine LPV Model 422

20.5 Case Study: Transient Stabilization of a Power System 428

21 Positive Real Method 436

21.1 Structure of Uncertain Closed–Loop System 436

21.2 Robust Stabilization Based on Strongly Positive Realness 438

21.3 Robust Stabilization Based on Strictly Positive Realness 441

21.4 Robust Performance Design for Systems with Positive Real Uncertainty 442

21.5 Case Study 445

Exercises 448

Notes and References 449

References 450

Index 455

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