System Identification Toolbox - Improve fit

2017 8 18
1 个回答
更新时间：2017 9 5
6 次查看（30 天）

0 个投票

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

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回答（1 个）

0 个投票

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

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I'm using R2015a. Do you think a newer version would give much better results?
Yes, I believe so. I would suggest upgrading to the latest release rather than just R2016b.
Didn't change much. Improved fit by ~3% maybe.
Greg Heath
Greg Heath 2017-9-5
So why did you accept the answer?
Greg

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