Can I use a range when I estimate coefficients to fit given solution with grey box estimation?
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hi all,
When I'm estimating coefficients of ODEs to fit given solution, I sometimes get crazy estimations when I change the startvalues. Is it by any chance possible to give a range in which the estimations should be?
Suppose I'm estimating gravity, I could for example say that it should be between 8 and 11.
(the procedure I'm using: https://nl.mathworks.com/help/ident/ug/estimating-coefficients-of-odes-to-fit-given-solution.html)
Thanks in advance!
0 commentaires
Réponses (1)
Widagdo Purbowaskito
le 15 Mar 2022
Modifié(e) : Widagdo Purbowaskito
le 15 Mar 2022
Yes you can do that.
First you need to set your inital system through idgrey function, init_sys = idgrey(odefun,parameters,fcn_type,extra_args,Ts);
Then, you can set your parameters boundaries: init_sys.Structure.Parameters.Minimum(1) = 8; init_sys.Structure.Parameters.Maximum(1) = 11;
This will depends on how many parameters you want to set the boundary.
0 commentaires
Voir également
Catégories
En savoir plus sur Linear Model Identification dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!