System Identification Toolbox - Improve fit

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Christian Hofstetter el 18 de Ag. de 2017

Editada: Walter Roberson el 5 de Sept. de 2017

Hi,

I am trying to get some transfer function fit to this data using the identification app, but it doesn't give me anything better than 50% fit.

This is the command I use:

mw1 = tfest(z1,15,20,20,'Ts',Ts)

Can somebody give any hints or advice. Data is attached.

Thanks a lot

Sharan Paramasivam Murugesan el 21 de Ag. de 2017

Which release of MATLAB are you using? Starting in R2016b, a new algorithm is used for faster and more accurate estimation.

Christian Hofstetter el 28 de Ag. de 2017

Didn't change much. Improved fit by ~3% maybe.

Greg Heath el 5 de Sept. de 2017

So why did you accept the answer?

Greg

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