Help With for loop with tranfer function and step
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s=tf('s');
G=1/(s^2+0.4*s+0.1);
K=[1 2 3 4 5 6];
figure
hold on
for i=1:1:length(K)
T=K(i)*G;
step(T)
S=stepinfo(T);
L=S.Peak(T)
end
I have this code but i get the error : "Unable to use a value of type tf as an index."
I want actually to make a vector containg all the values of the peak values and only then plot the peaks with the corresponding value of gain.
Thank you in advance
0 个评论
采纳的回答
Sam Chak
2023-11-20
You probably want to plot like this:
s = tf('s');
G = 1/(s^2 + 0.4*s + 0.1);
K = [1 2 3 4 5 6];
figure(1)
hold on
for i = 1:length(K)
T = K(i)*G;
step(T)
S = stepinfo(T);
L(i) = S.Peak;
end
grid on
hold off
figure(2)
plot(K, L, '-o'), grid on
xlabel('Gain'), ylabel('Peak')
2 个评论
更多回答(1 个)
Dyuman Joshi
2023-11-20
编辑:Dyuman Joshi
2023-11-20
There is no field in the struct 'S' with name 'T'. Thus you get the error in the line you defined 'S'.
I suspect that you want to get the 'Peak' value for each system -
s=tf('s');
G=1/(s^2+0.4*s+0.1);
K=[1 2 3 4 5 6];
%Preallocation
L = K.*0;
figure
hold on
for i=1:1:length(K)
T=K(i)*G;
step(T);
S=stepinfo(T);
L(i)=S.Peak;
end
L
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