嵌入式系统导论-实验课-Simulink Lab 1_MATLAB and Simulink Basics.pdfVIP

SIMULINK Lab 1 MATLAB and SIMULINK Basics Important: Save your models and simulation data of each main step of the simulation in “.m” and “.slx” files and use the saved files to demonstrate your simulation results to the Lab Supervisor. You lab performance will be assessed based on your demonstrations, which is 20% of your overall course assessment. MATLAB Basics Tutorial Key MATLAB commands used in this tutorial are: plot , polyval , roots , conv , deconv , inv , eig , poly , tf , zero Vectors Lets start off by creating something simple, like a vector. Enter each element of the vector (separated by a space) between brackets, and set it equal to a variable. For example, to create the vector a, enter the following into the MATLAB command window (you can Copy and Paste from your browser into MATLAB to make it easy) and MATLAB should return the following: a = [1 2 3 4 5 6 9 8 7] a = 1 2 3 4 5 6 9 8 7 Lets say you want to create a vector with elements between 0 and 20 evenly spaced in increments of two (this method is frequently used to create a time vector): t = 0:2:20 t = 0 2 4 6 8 10 12 14 16 18 20 Manipulating vectors is almost as easy as creating them. First, suppose you would like to add 2 to each of the elements in the vector a. The equation for that looks like: b = a + 2 b = 3 4 5 6 7 8 11 10 9 Now suppose, you would like to add two vectors together. If the two vectors are the same length, it is easy. Simply add the two as shown below: c = a + b c = 4 6 8 10 12 14 20 18 16 Subtraction of vectors of the same length works exactly the same way. Functions To make life easier, MATLAB includes many standard functions. Each function is a block of code that accomplishes a specific task. MATLAB contains all of the standard functions such as sin, cos, log, exp, sqrt, as well as many others. Com