how to acces and change value inside transfer function inside a loop

Kobi

2013 4 25

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i'm trying to change the k value from 0.1 to 7 that is inside transfer function but i have a problem i just don't know how to find the index inside this cells please help.

this is my code:

clear all
clc
kvals=0.1:0.1:7; % Change the values of k parameter
for kidx=1:length(kvals);
    k=kvals(kidx);
G(kidx)=tf([k],[10*10^-3 1]);
GG=tf([G.num{1,1}],[G.den{1,1}(k)]);
Gtotal(kidx)=feedback(GG,1);
%TAU(kidx)=(G(k).den{1}(1))/(G(k).num{1}(2));
end

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Craig Cowled 2013-4-25

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Kobi, I tried running your code and got an error message. It looks like you missed a space between G.den{1,1} and (k) in the line GG=tf([G.num{1,1}],[G.den{1,1} (k)]);

Is this the problem?