System Identification Toolbox - Improve fit

3 ビュー (過去 30 日間)

Christian Hofstetter 2017 年 8 月 18 日

編集済み: Walter Roberson 2017 年 9 月 5 日

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 2017 年 8 月 21 日

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

Christian Hofstetter 2017 年 8 月 28 日

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

Greg Heath 2017 年 9 月 5 日

So why did you accept the answer?

Greg

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