# System Dynamics Second Edition by William J. Palm III pdf download

System Dynamics Second Edition by William J. Palm III.

Contents:
CHAPTER 1. Introduction
CHAPTER 2. Modeling of Rigid-Body Mechanical Systems
CHAPTER 3. Solution Methods for Dynamic Models
CHAPTER 4. Spring and Damper Elements in Mechanical Systems
CHAPTER 5. State-Variable Models and Simulation Methods
CHAPTER 6. Electrical and Electromechanical Systems
CHAPTER 7. Fluid and Thermal Systems
CHAPTER 8. System Analysis in the Frequency Domain
CHAPTER 9. Transient Response and Block Diagram Models
CHAPTER 10. Introduction to Feedback Control Systems
CHAPTER 11. Control System Design and the Root Locus Plot
CHAPTER 12. Compensator Design and the Bode Plot
CHAPTER 13. Vibration Applications

Preface: System dynamics deals with mathematical modeling and analysis of devices and processes for the purpose of understanding their time-dependent behavior. While other subjects, such as Newtonian dynamics and electrical circuit theory, also deal with time-dependent behavior, system dynamics emphasizes methods for handling applications containing multiple types of components and processes such as electromechanical devices, electrohydraulic devices, and fluid-thermal processes. Because the goal of system dynamics is to understand the time-dependent behavior of a system of interconnected devices and processes as a whole, the modeling and analysis methods used in system dynamics must be properly selected to reveal how the connections between the system elements affect its overall behavior. Because systems of interconnected elements often require a control system to work properly, control system design is a major application area in system dynamics.

TEXT PHILOSOPHY:
This text is an introduction to system dynamics and is suitable for such courses commonly found in engineering curricula. It is assumed that the student has a background in elementary differential and integral calculus and college physics (dynamics, mechanics of materials, thermodynamics, and electrical circuits). A previous course in differential equations is desirable but not necessary, as the required material on differential equations, as well as Laplace transforms and matrices, is developed in the text.

The decision to write a textbook often comes from the author’s desire to improve on available texts. The decisions as to what topics to include and what approach to take emerge from the author’s teaching experiences that give insight as to what is needed for students to master the subject. This text is based on the author’s thirty-seven years of experience in teaching system dynamics.

This experience shows that typical students in a system dynamics course are not yet comfortable with applying the relevant concepts from earlier courses in dynamics and differential equations. Therefore, this text reviews and reinforces these important topics early on. Students often lack sufficient physical insight to relate the mathematical results to applications. The text therefore uses everyday illustrations of system dynamics to help students to understand the material and its relevance.

If laboratory sessions accompany the system dynamics course, many of the text’s examples can be used as the basis for experiments. The text is also a suitable reference on hardware and on parameter estimation methods.

MATLAB® AND SIMULINK®1 MATLAB and Simulink are used to illustrate how modern computer tools can be applied in system dynamics.2 MATLAB was chosen because it is the most widely used program in system dynamics courses and by practitioners in the field. Simulink, which is based on MATLAB and uses a diagram-based interface, is increasing in popularity because of its power and ease of use. In fact, students convinced the author to use Simulink after they discovered it on their own and learned how easy it is to use! It provides a useful and motivational tool.

It is, however, not necessary to cover MATLAB or Simulink in order to use the text, and it is shown how to do this later in the Preface.

CORE MATERIAL FOR SYSTEM DYNAMICS
This text has been designed to accommodate a variety of courses in system dynamics. The core material is in Chapters 1 through 6 and Chapters 8 and 9.

Chapter 1 introduces the basic terminology of system dynamics, covers commonly used functions, and reviews the two systems of units used in the text: British Engineering (FPS) units and SI units. These are the unit systems most commonly used in system dynamics applications. The examples and homework problems employ both sets of units so that the student will become comfortable with both. Chapter 1 also introduces methods for parameter estimation. These methods are particularly useful for obtaining spring constants and damping coefficients. The chapter then illustrates how MATLAB can be used for this purpose.

Chapter 2 covers rigid-body dynamics, including planar motion. Using the models developed in Chapter 2, Chapter 3 reviews solution methods for linear ordinary differential equations where either there is no forcing function (the homogeneous case) or where the forcing function is a constant. The chapter then develops the Laplace transform method for solving differential equations and applies it to equations having step, ramp, sine, impulse, and other types of forcing functions. It also introduces transfer function models.

Chapter 4 covers modeling of mechanical systems having stiffness and damping, and it applies the analytical methods developed in Chapter 3 to solve the models.

Chapter 5 develops the state-variable model, which is useful for certain analytical techniques as well as for numerical solutions. The optional sections of this chapter introduce Simulink, which is based on diagram descriptions, and apply the chapter’s concepts using MATLAB.

Chapter 6 treats modeling of electric circuits, operational amplifiers, electromechanical devices, sensors, and electroacoustic devices. It also discusses how motor parameters can be obtained, and it shows how to analyze motor performance.

Chapters 8 and 9 cover analysis methods in the frequency domain and the time domain, respectively. Chapter 8 demonstrates the usefulness of the transfer function for understanding and analyzing a system’s frequency response. It introduces Bode plots and shows how they are sketched and interpreted to obtain information about time constants, resonant frequencies, and bandwidth.

Chapter 9 integrates the modeling and analysis techniques of earlier chapters with an emphasis on understanding system behavior in the time domain, using step, ramp, and impulse functions primarily. The chapter covers step response specifications such as maximum overshoot, peak time, delay time, rise time, and settling time. Block diagram models are graphical representations of system structure.

Chapter 9 introduces these models as preparation for Chapter 10, which deals with control systems.

ALTERNATIVE COURSES IN SYSTEM DYNAMICS
The choice of remaining topics depends partly on the desired course emphasis and partly on whether the course is a quarter or semester course.
Some courses omit fluid and thermal systems, which are covered in Chapter 7.

This chapter can be skipped if necessary because only some examples in the remaining chapters, and not the theory and methods, depend on it. Part I of the chapter covers fluid systems. Part II covers thermal systems. These two parts are independent of each other. A background in fluid mechanics or heat transfer is not required to understand this chapter, but students should have had elementary thermodynamics before covering the material on pneumatic systems in Section 7.5.

Chapters 10, 11, and 12 deal with a major application of system dynamics, namely, control systems. Chapter 10 is an introduction to feedback control systems, including the PID control algorithm applied to first- and second-order plants. Chapter 11 deals with control systems in more depth and includes design methods based on the root locus plot and practical topics such as compensation, controller tuning, actuator saturation, reset wind-up, and state-variable feedback, with emphasis on motion control systems. Chapter 12 covers series compensation methods and design with the Bode plot. Chapter 13 covers another major application area, vibrations. Important practical applications covered are vibration isolators, vibration absorbers, modes, and suspension system design.

At the author’s institution, the system dynamics course is a junior course required for mechanical engineering majors. It covers Chapters 1 through 10, with some optional sections omitted. This optional material is then covered in a senior elective course in control systems, which also covers Chapters 11 and 12.

System Dynamics Second Edition by William J. Palm III pdf.

Book Details:
⏩Edition: 2nd
⏩Author: William J. Palm III
⏩Publisher: McGraw-Hill
⏩. Copyright © 2010 by The McGraw-Hill Companies, Inc.
⏩Language: English
⏩Pages: 900
⏩Size: 8.09 MB
⏩Format: pdf

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