MATLAB for Engineers（3rd版）：工程必备工具详解

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"《MATLAB for Engineers (3rd edition)》是一本专门面向工程领域的教材，由Holly Moore撰写，旨在帮助读者掌握MATLAB这一强大的数值计算和可视化工具。本书是第三版，涵盖了MATLAB的最新技术和应用，适用于那些希望在工程设计、控制系统分析、信号处理、图像处理、机器学习等领域进行高效编程的工程师们。该书结构严谨，内容全面，从基础概念如变量与数据类型，到高级功能如矩阵运算、函数定义、控制结构，再到实际案例中的系统建模和仿真，都进行了深入浅出的讲解。MATLAB在本书中被作为工程问题求解的强大平台，通过示例和练习，读者可以学习如何利用MATLAB进行数据分析、优化、模拟以及可视化，从而提升工作效率。书中还特别强调了MATLAB的Simulink模块，这是进行动态系统仿真和模型预测的重要组件，可以帮助读者理解和设计复杂的控制和信号处理系统。此外，作者还提供了关于版权和引用的指导，确保在使用他人作品时遵循正确的法律规范。《MATLAB for Engineers (3rd edition)》不仅适合正在学习MATLAB的新手，也对有一定经验但希望进一步提升技能的工程师极具价值。它是一本兼具理论知识和实践操作的实用参考书籍，能够帮助读者在工程实践中熟练运用MATLAB，提高解决实际问题的能力。"

xiv About This Book

• Information on debugging features was added to Chapters 7 and 8.

• Based on student and instructor feedback, Chapter 8 was signi cantly revised

and split into two chapters.

❍ The new Chapter 8 introduces MATLAB

’s logical functions such as find ,

and the more traditional selection structures if , if/else , and switch/case .

❍ The new Chapter 9 deals exclusively with repetition structures.

• The symbolic toolbox was changed signi cantly in the 2007b edition, which

required changes to the symbolic algebra materials in Chapter 12 .

• Two additional chapters were added in an attempt to make the text useful to a

wider audience.

❍ Chapter 15 describes graphical user interfaces.

❍ Chapter 16 is an introduction to Simulink

• Problems were added at the end of each chapter.

• Additional example problems were added.

• A number of new functions are introduced throughout the book, suggested to

us by adopters of the text.

2 Chapter 1 About MATLAB

use it to write a word-processing program. For large applications, such as operating

systems or design software, C++, JAVA, or FORTRAN would be the programs of

choice. (In fact, MATLAB

, which is a large application program, was originally

written in FORTRAN and later rewritten in C, a precursor of C++.) Usually, high-

level programs do not offer easy access to graphing—an application at which

MATLAB

excels. The primary area of overlap between MATLAB

and high-level

programs is “number crunching”—repetitive calculations or the processing of large

quantities of data. Both MATLAB

and high-level programs are good at processing

numbers. A “number-crunching” program is generally easier to write in MATLAB

but usually it will execute faster in C++ or FORTRAN. The one exception to this

rule is calculations involving matrices. MATLAB

is optimized for matrices. Thus, if

a problem can be formulated with a matrix solution, MATLAB

executes substan-

tially faster than a similar program in a high-level language.

MATLAB

is available in both a professional and a student version. The profes-

sional version is probably installed in your college or university computer laboratory,

but you may enjoy having the student version at home. MATLAB

is updated regu-

larly; this textbook is based on MATLAB

7.12. If you are using earlier versions such

as MATLAB

6, you may notice some minor differences between it and MATLAB

7.12. There are substantial differences in versions that predate MATLAB

5.5.

The standard installation of the professional version of MATLAB

is capable of

solving a wide variety of technical problems. Additional capability is available in the

form of function toolboxes. These toolboxes are purchased separately, and they

may or may not be available to you. You can  nd a complete list of the MATLAB

product family at The MathWorks web site, www.mathworks.com .

1.2 STUDENT EDITION OF MATLAB

The professional and student editions of MATLAB

are very similar. Beginning stu-

dents probably won’t be able to tell the difference. Student editions are available for

Microsoft Windows, Mac OSX, and Linux operating systems and can be purchased

from college bookstores or online from The MathWorks at www.mathworks.com .

The MathWorks packages its software in groups called releases , and MATLAB

7.12

is featured, along with other products, such as Simulink

7.7, in Release R2011a. New

versions are released every 6 months. The release number is the same for both the stu-

dent and professional edition, but the student version may lag the professional version

by several months. The student edition of R2011a includes the following features:

• Full MATLAB

• Simulink

, with the ability to build models with up to 1000 blocks (the profes-

sional version allows an unlimited number of blocks)

• Symbolic Math Toolbox

• Control System Toolbox

• Signal Processing Toolbox

• DSP System Toolbox

• Statistics Toolbox

• Optimization Toolbox

• Image Processing Toolbox

• Software manuals for both MATLAB

7 and Simulink

• A CD containing the full electronic documentation

• A single-user license, limited to students for use in their classwork (the profes-

sional version is licensed either singly or to a group)

KEY IDEA

MATLAB

is optimized for

matrix calculations

KEY IDEA

MATLAB

is regularly

updated

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