How does tfest estimate the transfer function of a system given input and output in time domain?

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Sabna
Sabna am 4 Jun. 2014
Beantwortet: Arkadiy Turevskiy am 5 Jun. 2014
i want to get the transfer function of a system given input s1 and output s2 in time domain, in matlab. i am getting it correctly with the help of iddata and tfest.
tfdata = iddata(s2,s1,0.01); sys = tfest(tfdata,3); [numd,dend] = bilinear(sys.num,sys.den,Fs); fvtool(numd,dend)
Kindly help me understand the work done by tfest in estimation of transfer function.

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Arkadiy Turevskiy
Arkadiy Turevskiy am 5 Jun. 2014
Please take a look at the reference page and scroll to the very bottom: "More about: Algorithms".

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