ODE45 AND WINDUP
in [Matlab]
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From: Ismael Ochoa on 9 Jun 2010 17:15 How can I solve a ODE with limits in a state variable.(windup limiter and non-windup limiter)? Thanks
From: Torsten Hennig on 9 Jun 2010 22:31 > How can I solve a ODE with limits in a state > variable.(windup limiter and non-windup limiter)? > Thanks So the solver should quit or the equations should change when a state variable reaches a certain value, or what do you mean ? Please explain in more detail. Best wishes Torsten.
From: Ismael Ochoa on 10 Jun 2010 07:58 Torsten Hennig <Torsten.Hennig(a)umsicht.fhg.de> wrote in message <262820466.309312.1276151537884.JavaMail.root(a)gallium.mathforum.org>... > > How can I solve a ODE with limits in a state > > variable.(windup limiter and non-windup limiter)? > > Thanks > > So the solver should quit or the equations should > change when a state variable reaches a certain value, > or what do you mean ? > Please explain in more detail. > > Best wishes > Torsten. I mean, Solve ODE with saturation in one o two elements (state ariable). I hear this is posible using events...... Tks
From: Ismael Ochoa on 10 Jun 2010 08:00 Soleve ODE with saturation in one or two elements(state variable). Tks.
From: Torsten Hennig on 10 Jun 2010 04:37
> Soleve ODE with saturation in one or two > elements(state variable). > > Tks. Saturation should be between 0 and 1 ? This should automatically be satisfied by the ODE. Otherwise, if you want to change the ODE system or quit the ODE solver if a state variable reaches some value, you can - as you already wrote - use the event capability of most of the ODE integrators. Best wishes Torsten. |