Page 11 - Modern Control Systems

Contents vii
5.12 Summary 364
Skills Check 364 • Exercises 368 • Problems 371 • Advanced
Problems 377 • Design Problems 379 • Computer Problems 382
Terms and Concepts 384

CHAPTER 6 The Stability of Linear Feedback Systems 386

6.1 The Concept of Stability 387
6.2 The Routh-Hurwitz Stability Criterion 391
6.3 The Relative Stability of Feedback Control Systems 399
6.4 The Stability of State Variable Systems 401
6.5 Design Examples 404
6.6 System Stability Using Control Design Software 413
6.7 Sequential Design Example: Disk Drive Read System 421
6.8 Summary 424
Skills Check 425 • Exercises 428 • Problems 430 • Advanced
Problems 435 • Design Problems 438 • Computer Problems 440
Terms and Concepts 442

CHAPTER The Root Locus Method 443
7.1 Introduction 444
7.2 The Root Locus Concept 444
7.3 The Root Locus Procedure 449
7.4 Parameter Design by the Root Locus Method 467
7.5 Sensitivity and the Root Locus 473
7.6 PID Controllers 480
7.7 Negative Gain Root Locus 492
7.8 Design Examples 496
7.9 The Root Locus Using Control Design Software 510
7.10 Sequential Design Example: Disk Drive Read System 516
7.11 Summary 518
Skills Check 522 • Exercises 526 • Problems 530 • Advanced
Problems 539 • Design Problems 543 • Computer Problems 549
Terms and Concepts 551

CHAPTER 8 Frequency Response Methods 553
8.1 Introduction 554
8.2 Frequency Response Plots 556
8.3 Frequency Response Measurements 577
8.4 Performance Specifications in the Frequency Domain 579
8.5 Log Magnitude and Phase Diagrams 582
8.6 Design Examples 583