EE3210M2b_0910SemA - City University of Hong Kong...

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City Univers ity of Hong Kong Department of E lectron ic Eng ineer ing EE3210 Lab 3: Network Analys is Objective To be familiar with linear network analysis using ordinary differential equation and Laplace Transform. Equipment 1. IBM Pentium or compatibles 2. MATLAB 6.5 or above 3. Simulink 4. Control system toolbox Use of MATLAB function A. Impulse response of the system Before you continue, you have to be familiar with the following functions: · residue · impulse · step · lsim · tf · plot · for [The detailed description of functions can be obtained by typing “help xxx”, where xxx is the function name.] Method 1: Use of Laplace Transform Procedures 1. Plot the frequency response of the system in the following s-domain, 32 1 () 22 Hs sss = ++ + 1 2. Obtain the partial fraction expression by using the function “residue”
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3. Obtain the inverse Laplace transform by referring the Table I. 4. Plot the time response by the time function obtained in step 3. Method 2: Use of the MATLAB function “impulse” Procedures 1. Create a system with the function “tf”. sys= tf(num,den) creates a continuous-time transfer function sys with numerator(s) num and denominator(s) den. 2. Obtain the impulse response by using the function “impulse” B. Step response of the system Method1: Use of Laplace Transform Procedures 1. Express the output response of the system in s-domain. 2. Obtain the partial fraction expression by using the function “residue” 3. Obtain the inverse Laplace transform by referring the Table I. 4. Plot the time response by the time function obtained in step 3.
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EE3210M2b_0910SemA - City University of Hong Kong...

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