Problems with idnlgrey object simulation
1 view (last 30 days)
Show older comments
Hi everyone,
I am trying to identify the parameters of a system using a non-linear greyBox object. My system is defined as a state-space and the estimation, run by means of 'pem' command, seems to give good results.
After the estimation process, I use the command 'compare' to have a look on the results with respect to the measured data, and this results good as well.
The problem appears when I simulate the greyBox object on Simulink. The outputs it gives are completely different from the ones given by 'compare', altough I use the same input data.
Why does it happen? Which outputs should I trust more?
Thank you very much.
0 Comments
Accepted Answer
Arkadiy Turevskiy
on 15 Feb 2013
Edited: Arkadiy Turevskiy
on 15 Feb 2013
This issue was addressed several times previously, here is a link to the earlier question that was answered alerady. You need to set the initial states correctly. Take a look at this function for doing that.
HTH.
Arkadiy
More Answers (0)
See Also
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!