Inverse Z-transform with negative Z-exponents
14 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I am faced with a Z-transform problem for school, and I already know the code to handle most of the problem using matrices for the numerator and denominator. My trouble is that the problem uses negative-exponents for the Zs.
x(z) = (z^-3)/((1 - z^-1)(1 - 0.2z^-1))
If this problem had only positive exponents, but the same coefficients, I would approach inputing this particular problem like this:
MATLAB code
syms z
%x(z) = (z^3)/((-z^1 + 1)(-0.2z^1 + 1))
num=[1 0 0 0];
den=conv([-1 1],[-0.2 1]);
Any thoughts for using a similar input style with negative exponents? Would it really be as simple as something like 'fun(-1)'?
0 commentaires
Réponse acceptée
Plus de réponses (1)
Azzi Abdelmalek
le 14 Fév 2015
num=[1 0 0 0];
den=conv([-1 1],[-0.2 1])
g=tf(num,den,1,'variable','z^-1')
2 commentaires
Voir également
Catégories
En savoir plus sur Number Theory dans Help Center et File Exchange
Produits
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!