How to make transfer function if you know input/output data
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Hello!
So here's the thing, I have 3 matrices, the first one contains input data to the system, the second contains output data of the system and the third one has time data.
System is SISO.
How can I get transfer function out of this data in Laplace space
{F(s)=O(s)/I(s)} O(s)=output function I(s)=input function
And identification with methods like ARX, ARMAX, RARX,..... is not allowed.
Thank you!
L.
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More Answers (1)
Azzi Abdelmalek
on 2 Sep 2012
%try this function
[N,D]=mcar(u,y,n,k1,k2) ; %N,D disret transfer function
ts=t(2)-t(1) %your sample time
modeld=tf(N,D,ts)
modelc=d2c(modeld) %contiuous transfer function
[Nc,Dc]=tfdata(modelc);
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