Creating a transfer function from a frequency sweep FFT

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Piero
Piero 2013-1-17
Hi everyone,
I'm trying to define a tranfer function for my mecchanical system. I've done a frequency sweep from 0Hz to 30Hz and obtained 2 data vectors; input and output.
I've done the FFT(x,y) but how can I get a transfer function
TF= num(s) / den(s) or a bode from that FFT analysis?
regards,
Piero

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Arkadiy Turevskiy
Arkadiy Turevskiy 2013-3-18
You can do that using System Identification Toolbox, or using tfestimate from Signal Processing Toolbox.

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