Problems with idnlgrey object simulation
显示 更早的评论
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.
采纳的回答
Arkadiy Turevskiy
2013-2-15
编辑：Arkadiy Turevskiy
2013-2-15
0 个投票
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
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Nonlinear Grey-Box Models 的更多信息
2013-2-15
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
