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Distributed Model Predictive Control for Plant-Wide Systems

ISBN: 978-1-118-92156-2
328 pages
April 2016
Distributed Model Predictive Control for Plant-Wide Systems (1118921569) cover image

Description

A comprehensive examination of DMPC theory and its technological applications

• A comprehensive examination of DMPC theory and its technological applications from basic through to advanced level
• A systematic introduction to DMPC technology providing classic DMPC coordination strategies, analysis of their performance, and design methods for both unconstraint and constraint systems
• Includes the system partition methods, coordination strategies, the performance analysis and how to design stabilized DMPC under different coordination strategies
• Presents useful theories and technologies which can be used in many different industrial fields, such as the metallurgical process and high speed transport, helping readers to grasp the procedure of using the DMPC
• Reflects  the authors’ combined research in the area, providing a wealth of and current and background information

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Table of Contents

Preface xi

About the Authors xv

Acknowledgement xvii

List of Figures xix

List of Tables xxiii

1 Introduction 1

1.1 Plant-Wide System 1

1.2 Control System Structure of the Plant-Wide System 3

1.2.1 Centralized Control 4

1.2.2 Decentralized Control and Hierarchical Coordinated Decentralized Control 5

1.2.3 Distributed Control 6

1.3 Predictive Control 8

1.3.1 What is Predictive Control 8

1.3.2 Advantage of Predictive Control 9

1.4 Distributed Predictive Control 9

1.4.1 Why Distributed Predictive Control 9

1.4.2 What is Distributed Predictive Control 10

1.4.3 Advantage of Distributed Predictive Control 10

1.4.4 Classification of DMPC 11

1.5 About this Book 13

Part I FOUNDATION

2 Model Predictive Control 19

2.1 Introduction 19

2.2 Dynamic Matrix Control 20

2.2.1 Step Response Model 20

2.2.2 Prediction 21

2.2.3 Optimization 22

2.2.4 Feedback Correction 23

2.2.5 DMC with Constraint 24

2.3 Predictive Control with the State Space Model 26

2.3.1 System Model 27

2.3.2 Performance Index 28

2.3.3 Prediction 28

2.3.4 Closed-Loop Solution 30

2.3.5 State Space MPC with Constraint 31

2.4 Dual Mode Predictive Control 33

2.4.1 Invariant Region 33

2.4.2 MPC Formulation 34

2.4.3 Algorithms 35

2.4.4 Feasibility and Stability 36

2.5 Conclusion 37

3 Control Structure of Distributed MPC 39

3.1 Introduction 39

3.2 Centralized MPC 40

3.3 Single-Layer Distributed MPC 41

3.4 Hierarchical Distributed MPC 42

3.5 Example of the Hierarchical DMPC Structure 43

3.6 Conclusion 45

4 Structure Model and System Decomposition 47

4.1 Introduction 47

4.2 System Mathematic Model 48

4.3 Structure Model and Structure Controllability 50

4.3.1 Structure Model 50

4.3.2 Function of the Structure Model in System Decomposition 51

4.3.3 Input–Output Accessibility 53

4.3.4 General Rank of the Structure Matrix 56

4.3.5 Structure Controllability 56

4.4 Related Gain Array Decomposition 58

4.4.1 RGA Definition 59

4.4.2 RGA Interpretation 60

4.4.3 Pairing Rules 61

4.5 Conclusion 63

Part II UNCONSTRAINED DISTRIBUTED PREDICTIVE CONTROL

5 Local Cost Optimization-based Distributed Model Predictive Control 67

5.1 Introduction 67

5.2 Local Cost Optimization-based Distributed Predictive Control 68

5.2.1 Problem Description 68

5.2.2 DMPC Formulation 69

5.2.3 Closed-loop Solution 72

5.2.4 Stability Analysis 79

5.2.5 Simulation Results 79

5.3 Distributed MPC Strategy Based on Nash Optimality 82

5.3.1 Formulation 83

5.3.2 Algorithm 86

5.3.3 Computational Convergence for Linear Systems 86

5.3.4 Nominal Stability of Distributed Model Predictive Control System 88

5.3.5 Performance Analysis with Single-step Horizon Control Under Communication Failure 89

5.3.6 Simulation Results 94

5.4 Conclusion 99

Appendix 99

Appendix A. QP problem transformation 99

Appendix B. Proof of Theorem 5.1 100

6 Cooperative Distributed Predictive Control 103

6.1 Introduction 103

6.2 Noniterative Cooperative DMPC 104

6.2.1 System Description 104

6.2.2 Formulation 104

6.2.3 Closed-Form Solution 107

6.2.4 Stability and Performance Analysis 109

6.2.5 Example 113

6.3 Distributed Predictive Control based on Pareto Optimality 114

6.3.1 Formulation 118

6.3.2 Algorithm 119

6.3.3 The DMPC Algorithm Based on Plant-Wide Optimality 119

6.3.4 The Convergence Analysis of the Algorithm 121

6.4 Simulation 121

6.5 Conclusions 123

7 Networked Distributed Predictive Control with Information Structure Constraints 125

7.1 Introduction 125

7.2 Noniterative Networked DMPC 126

7.2.1 Problem Description 126

7.2.2 DMPC Formulation 127

7.2.3 Closed-Form Solution 132

7.2.4 Stability Analysis 135

7.2.5 Analysis of Performance 135

7.2.6 Numerical Validation 137

7.3 Networked DMPC with Iterative Algorithm 144

7.3.1 Problem Description 144

7.3.2 DMPC Formulation 145

7.3.3 Networked MPC Algorithm 147

7.3.4 Convergence and Optimality Analysis for Networked 150

7.3.5 Nominal Stability Analysis for Distributed Control Systems 152

7.3.6 Simulation Study 153

7.4 Conclusion 159

Appendix 159

Appendix A. Proof of Lemma 7.1 159

Appendix B. Proof of Lemma 7.2 160

Appendix C. Proof of Lemma 7.3 160

Appendix D. Proof of Theorem 7.1 161

Appendix E. Proof of Theorem 7.2 161

Appendix F. Derivation of the QP problem (7.52) 164

Part III CONSTRAINT DISTRIBUTED PREDICTIVE CONTROL

8 Local Cost Optimization Based Distributed Predictive Control with Constraints 169

8.1 Introduction 169

8.2 Problem Description 170

8.3 Stabilizing Dual Mode Noncooperative DMPC with Input Constraints 171

8.3.1 Formulation 171

8.3.2 Algorithm Design for Resolving Each Subsystem-based Predictive Control 176

8.4 Analysis 177

8.4.1 Recursive Feasibility of Each Subsystem-based Predictive Control 177

8.4.2 Stability Analysis of Entire Closed-loop System 183

8.5 Example 184

8.5.1 The System 184

8.5.2 Performance Comparison with the Centralized MPC 185

8.6 Conclusion 187

9 Cooperative Distributed Predictive Control with Constraints 189

9.1 Introduction 189

9.2 System Description 190

9.3 Stabilizing Cooperative DMPC with Input Constraints 191

9.3.1 Formulation 191

9.3.2 Constraint C-DMPC Algorithm 193

9.4 Analysis 194

9.4.1 Feasibility 194

9.4.2 Stability 199

9.5 Simulation 201

9.6 Conclusion 208

10 Networked Distributed Predictive Control with Inputs and Information Structure Constraints 209

10.1 Introduction 209

10.2 Problem Description 210

10.3 Constrained N-DMPC 212

10.3.1 Formulation 212

10.3.2 Algorithm Design for Resolving Each Subsystem-based Predictive Control 218

10.4 Analysis 219

10.4.1 Feasibility 219

10.4.2 Stability 225

10.5 Formulations Under Other Coordination Strategies 227

10.5.1 Local Cost Optimization Based DMPC 227

10.5.2 Cooperative DMPC 228

10.6 Simulation Results 229

10.6.1 The System 229

10.6.2 Performance of Closed-loop System under the N-DMPC 230

10.6.3 Performance Comparison with the Centralized MPC and the Local Cost Optimization based MPC 231

10.7 Conclusions 236

Part IV APPLICATION

11 Hot-Rolled Strip Laminar Cooling Process with Distributed Predictive Control 239

11.1 Introduction 239

11.2 Laminar Cooling of Hot-rolled Strip 240

11.2.1 Description 240

11.2.2 Thermodynamic Model 241

11.2.3 Problem Statement 242

11.3 Control Strategy of HSLC 244

11.3.1 State Space Model of Subsystems 244

11.3.2 Design of Extended Kalman Filter 247

11.3.3 Predictor 247

11.3.4 Local MPC Formulation 248

11.3.5 Iterative Algorithm 249

11.4 Numerical Experiment 251

11.4.1 Validation of Designed Model 251

11.4.2 Convergence of EKF 252

11.4.3 Performance of DMPC Comparing with Centralized MPC 252

11.4.4 Advantages of the Proposed DMPC Framework Comparing with the Existing Method 253

11.5 Experimental Results 256

11.6 Conclusion 258

12 High-Speed Train Control with Distributed Predictive Control 263

12.1 Introduction 263

12.2 System Description 264

12.3 N-DMPC for High-Speed Trains 264

12.3.1 Three Types of Force 264

12.3.2 The Force Analysis of EMUs 266

12.3.3 Model of CRH2 267

12.3.4 Performance Index 271

12.3.5 Optimization Problem 272

12.4 Simulation Results 272

12.4.1 Parameters of CRH2 273

12.4.2 Simulation Matrix 273

12.4.3 Results and Some Comments 274

12.5 Conclusion 278

13 Operation Optimization of Multitype Cooling Source System Based on DMPC 279

13.1 Introduction 279

13.2 Structure of Joint Cooling System 279

13.3 Control Strategy of Joint Cooling System 280

13.3.1 Economic Optimization Strategy 281

13.3.2 Design of Distributed Model Predictive Control in Multitype Cold Source System 283

13.4 Results and Analysis of Simulation 286

13.5 Conclusion 292

References 293

Index 299

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