Problem with idgray and ident tool
2 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
Hi, I'm trying to use the system identification tool in order to obtain the space state model the mass spring damper 2Dof system, so i'm trying to work with the grey box model. this is my function
function [A,B,C,D]=identificazioneidgrey(m_1,m_2,b_1,b_2,k_1,k_2,Ts);
A1=[0 0 1 0;0 0 0 1];
A2=[((-k_1-k_2)/m_1) (k_2/m_1) (-(b_1+b_2)/m_1) (b_2/m_1);(k_2/m_2) (-(k_2/m_2)) (b_2/m_2) (-(b_2/m_2))];
A=[A1;A2];
B1=[0 0;0 0];
B2=[(1/m_1) 0;0 (1/m_2)];
B=[B1;B2];
C=[1 0 0 0;0 1 0 0];
D=[0 0;0 0];
end
and this is the idgrey model:
odefun='identificazioneidgrey';
m_1=1;
m_2=2;
b_1=1;
b_2=1;
k_1=1;
k_2=1;
parameters={'m_1','m_2','b_1','b_2','k_1','k_2'};
fcn_type='c';
sys=idgrey(odefun,parameters,fcn_type);
the problem is that in the work space i can't find sys, but only ans, inside ans:Empty linear greay-box model.
I want sys because i have to put it inside the ident tool. Where is the error? What can i do?
0 Commenti
Risposte (0)
Vedere anche
Categorie
Scopri di più su Linear Model Identification in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!