Introductory System Analysis Signals and Systems in Electrical EngineeringPDF电子书下载

Chapter 1．The Language of Signals and Systems 1

1-1．The Cause-and-effect Pattern 1

1-2．A Radio Broadcast System 2

1-3．Automatic Systems 5

1-4．A System to Stabilize a Ship 7

1-5．Signals and Systems 11

Problems 12

Chapter 2．Signals 13

2-1．Signals：Physical and Analytical 13

2-2．Exponential Signals 15

2-3．Negative Real Values of s 16

2-4．Positive Real Values of s 22

2-5．Complex Numbers 22

2-6．Imaginary Values of s 27

2-7．Complex Values of s 35

2-8．Zero Value of s 39

2-9．Integrals and Derivatives of the Unit Step Function 40

2-10．The s Plane 49

Problems 52

Chapter 3．Models for Mechanical Systems 65

3-1．The Nature of Analysis 65

3-2．Mechanical System Models 67

3-3．The Ideal Mass Element 67

3-4．The Ideal Spring Element 69

3-5．The Ideal Damper Element 72

3-6．Summary：Ideal Elements 75

3-7．Nature of Linear Models 75

3-8．Energy,Work,and Power 80

3-9．Ideal Source Elements 83

3-10．Through and Across Variables 86

3-11．Construction of the Circuit Diagram 89

3-12．Derivation of the Circuit Equations 95

3-13．Rotational Systems 99

3-14．Combined Systems 110

3-15．Units 115

3-16．Concluding Comments 118

Problems 121

Chapter 4．Electrical Systems 135

4-1．Elements of an Electric Circuit 135

4-2．Gravitational Phenomena 141

4-3．Electrostatic Phenomena 150

4-4．Magnetic Phenomena 160

4-5．Electrical Energy Dissipation 170

4-6．Node Equations for Electric Circuits 171

4-7．Loop Equations 178

4-8．Practical Sources 181

4-9．Summary 186

Problems 192

Appendix 4-1．Examples of Node Equations 201

Appendix 4-2．The Cathode-ray Tube 206

Chapter 5．The Response of Simple Electric Circuits 216

5-1．Characteristics of Electrical Networks 216

5-2．The Nature of the Circuit Equations 220

5-3．The Dynamics of Undriven Systems 228

5-4．Unit-impulse Excitation 237

5-5．Response to Exponential Excitation 242

5-6．Network Interpretation of Driving Signals 247

5-7．Some Special Cases 251

5-8．Further Relations between Transfer Functions and Time Responses 253

5-9．Initial Conditions Represented by Equivalent Sources 257

Problems 269

Appendix 5-1．Solution of Simultancous Algebraic Equations 279

Appendix 5-2．Partial-fraction Expansions 280

Chapter 6．The Transfer Function 285

6-1．The Forced Component of the Response 285

6-2．Calculation of T(s) 287

6-3．Sinusoidal Excitation 292

6-4．Pole and Zero Constellations 295

6-5．Stability 297

6-6．Sinusoidal Frequency Response 298

6-7．Geometry of the s Plane 303

6-8．Exploiting s-plane Geometry 312

6-9．Resonance Phenomena 320

6-10．Quality Factor 324

6-11．Specific Resonant Systems 327

6-12．Adjustable-parameter Networks 333

Problems 343

Chapter 7．The Elements of Analog Simulation and Analog Computers 355

7-1．Types of Automatic Computers 355

7-2．A Symbolism for Analog Simulation 359

7-3．The Essence of Analog Simulation 362

7-4．Signal-flow Graphs—A Shorthand Analog Symbolism 365

7-5．Systematic Graphing Techniques 369

7-6．Graphing Differential Equations 372

7-7．Electronic Analog Computers 379

7-8．The Algebra of Signal-flow Graphs 397

Problems 409

Chapter 8．Summary Illustrative Example 422

8-1．Introduction 422

8-2．Statement of the Problem 422

8-3．Steps in Analysis 423

8-4．Signal Approximation 424

8-5．Formulation of Dynamie Equations 425

8-6．Determination of the Transfer Function 427

8-7．Response to Step of Amplitude 5 428

8-8．Response to the Square Pulse 431

8-9．Response to the Sinusoidal Pulse 433

8-10．Comparison of the Two Responses 437

8-11．Simulation Techniques 437

8-12．Analog-computer Simulation 439

8-13．Concluding Remarks 445