Z-Transform And It's MATLAB Implementation PPT

Download

Z-Transform And It's MATLAB Implementation Presentation Transcript:
1.Signals and Systems (Lab)

2.Z-Transform and its MATLAB implementation .

3.In This Lab…
Introduction to Z-Transform
How to implement Z-transform and Inverse Z-transform in MATLAB?
What is meant by Region of Convergence (ROC)
Pole Zero Plot
Stable and Unstable Systems
Impulse Response and Step Response
MATLAB Implementation of inverse Z-transform using Partial Fraction Expansion
How to use Z-Transform to solve Difference Equations using MATLAB?

4.Introduction to Z-Transform

5.MATLAB Implementation of Z-Transform

6.Solution of Example 1

7.The command ztrans and iztrans

8.Solution of Example 2

9.Discrete Time System Properties

10.Pole-Zero Plot and Stability
num=[.1 .1];
den=[1 -1.5 0.7];
 zplane(num,den)
Is this system is STABLE??

11.Step Response
figure(3)
subplot(2,1,1)
num=[.1 .1];
den=[1 -1.5 0.7];
dstep(num,den)
 subplot(2,1,2)
Stepz(num,den)

12.Impulse Response
 figure(4)
subplot(2,1,1)
dimpulse(num,den)
 subplot(2,1,2)
impz(num,den)

13.Partial Fraction Expansion of a Rational Function

14.The Command residue

15.Solution of Difference Equation using Z-Transform