MATLAB Answers

System Identification Toolbox - Improve fit

9 views (last 30 days)
Christian Hofstetter
Christian Hofstetter on 18 Aug 2017
Edited: Walter Roberson on 5 Sep 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

  0 Comments

Sign in to comment.

Answers (1)

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

  4 Comments

Show 1 older comment
Sharan Paramasivam Murugesan
Yes, I believe so. I would suggest upgrading to the latest release rather than just R2016b.
Christian Hofstetter
Christian Hofstetter on 28 Aug 2017
Didn't change much. Improved fit by ~3% maybe.
Greg Heath
Greg Heath on 5 Sep 2017
So why did you accept the answer?
Greg

Sign in to comment.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by