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เนื้อหาย่อ : Chapter 6 Root-Locus Analysis 6-1 Introduction 337 6-2 Root-Locus Plots 339 6-3 Summary of General Rules for Constructing Root Loci351 6-4 Root-Locus Plots with MATLAB358 6-5 Positive-Feedback Systems 373 6-6 Conditionally Stable Systems378 6-7 Root Loci for Systems with Transport Lag 379 Example Problems and Solutions384 Problems 413 Chapter 7 Control Systems Design by the Root-Locus Method 7-1 Introduction 416 7-2 Preliminary Design Considerations 4 7-3 Lead Compensation 421 7-4 Lag Compensation 429 7-5 Lag-Lead Compensation43 7-6 Parallel Compensation1 Example Problems and Solutions5 Problems 488 Chapter 8 Frequency-Response Analysis 8-1 Introduction 492 8-2 Bode Diagrams 497 8-3 Plotting Bode Diagrams with MATLAB516 8-4 Polar Plots 523 8-5 Drawing Nyquist Plots with MATLAB 53 8-6 Log-Magnitude-versus-Phase Plots539 8-7 Nyquist Stability Criterion 540 8-8 Stability Analysis 550 8.9 Relative Stability 560 8-10 Closed-Loop Frequency Response of Unity-Feedback Systems 575 8-11 Experimental Determination of Transfer Functions 584 Example Problems and Solutions 58 Problems 612