The system described in your EDOS.ps file can be written in implicit form,
A*[dy1/dt; dy2/dt] = F(y1,y2)
but here you have A =[1 -1; -2 2], i.e. A is singular. I am not sure
that; at least under this form, your system is well-posed.
S.
Le 08/04/2019 à 22:13, Marcus Vinicius Pereira de Souza a écrit :
Dear all,
I'm trying to do a simulation involving a system of ordinary
differential equations. However, in working out the block diagram, I
came across an algebraic loop problem.
To solve this problem, I made a new arrangement of the equations and
then it was necessary to include a derivative block.
Two new problems have appeared: 1) the initial value of the output
signal does not match the value obtained by the initial value theorem
and 2) the signal has a strong oscillation (probably due to high
frequencies).
Can anyone help me solve these issues? Attached, the. Thank you very much.
--
Marcus Vinicius Pereira de Souza, D.Sc. (Eng.)
Prof. do Ens. Bas. Tec. Tecnológico
CEFET/RJ | Campus Valença-RJ
Cel: +55 32 9 8436 9695 (TIM - Wapp)
/http://lattes.cnpq.br/1549590151077934/
<https://antispam.utc.fr/proxy/1/c3RlcGhhbmUubW90dGVsZXRAdXRjLmZy/lattes.cnpq.br/1549590151077934>
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