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Introduction to MATLAB 7

Introduction to MATLAB 7. Engineering 161 Engineering Practices II Joe Mixsell February 1 2006. MATLAB Properties I. MATLAB is a very powerful mathematical computational tool. MATLAB comes from MAT rix LAB oratory MATLAB provides extensive capabilities for generating graphs

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Introduction to MATLAB 7

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  1. Introduction to MATLAB 7 Engineering 161 Engineering Practices II Joe Mixsell February 1 2006

  2. MATLAB Properties I • MATLAB is a very powerful mathematical computational tool. • MATLAB comes from MATrix LABoratory • MATLAB provides extensive capabilities for generating graphs • MATLAB is applicable to a broad range of engineering problems

  3. MATLAB Properties II • MATLAB supports an interactive and a programming environment • Think of the interactive environment as a “super calculator” with graphics • Think of the programming environment as tool for writing programs to perform complex calculations

  4. MATLAB Properties III • Where does MATLAB fit? • It is usually easier to write programs in MATLAB as compared to C or Fortran • C or Fortran programs will usually run faster than MATLAB programs • But, MATLAB is optimized for matrix manipulations and programs formalized in this way will run faster than similar programs in C or Fortran

  5. Resources • Text: Introduction to MATLAB 7 • Notes: MATLAB Notes and Assignments • Website: www.engr.uaa.alaska.edu/soe/courses/engr161/ • Website: www.mathworks.com • Student Edition of MATLAB 7 • Computer Lab

  6. Course of Study • MATLAB Environment Chp. 2 • Predefined MATLAB functions Chp. 3 • Plotting Chp. 4 • Programming in MATLAB Chp. 5 • Matrix Computations Chp. 6 • Symbolic Mathematics Chp. 7

  7. MATLAB Assignments • Chp. 2: 2.1, 2.2, 2.5, 2.6, 2.10, 2.12 • Chp. 3: 3.1, 3.4, 3.7, 3.8, 3.9, 3.11 • Chp. 4: 4.1, 4.2, 4.5, 4.7, 4.9a, 4.9b • Chp. 5: 5.1, 5.2, 5.5 • Chp. 6: 6.3, 6.6, 6.8, 6.9, 6.11 • Chp. 7: 7.1, 7.3, 7.4, 7.5, 7.7, 7.9, 7.10, 7.11, 7.12

  8. Assignments • The percent symbol % is used to define a comment, use this following the MATLAB prompt to add your name and assignment number to your work >>% Joe Mixsell >>% Assignment 3.4

  9. More on Assignments • The first few assignments can easily be done with paper and pencil but you need to do them using MATLAB. Only outputs from MATLAB will be accepted.

  10. An Engineering Problem-Solving Methodology • Step 1: State the problem clearly. • Step 2: Describe the inputs and outputs. • Step 3: Work the problem by hand with a set of simple data. • Step 4: Develop the MATLAB solution • Step 5: Test the solution with real data

  11. Getting Started Example 1 (Prob. 2.10) d = ½ * g * t^2 where d is the distance a body falls freely in a gravitation field during t seconds. Example 2 (Assignment 3) x(t) = exp (-alpha * t ) * sin ( omega * t ) i.e, our suspension system we studied previously using Excel

  12. Example 1 • Using MATLAB we want to create table of values of time and distance for time increments between 0 and 10 seconds.

  13. Example II • Using MATLAB we’ll redo the analysis of our suspension system to compare the two approaches to solving this problem.

  14. Today’s Discussion • Introduce various MATLAB windows • Use the Command Window • Use the Edit Window • View results in the Command Window and the Graphics Window

  15. OFF TO MATLAB…

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