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Topic: Time-varying state space model
Replies: 1   Last Post: Aug 19, 2013 7:55 AM

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Torsten Hennig

Posts: 2,419
Registered: 12/6/04
Re: Time-varying state space model
Posted: Aug 19, 2013 7:55 AM
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> Hello,
>
> i am trying to simulate a bit more complicated model
> with basic equation:
>
> x'= A(t)x + R(t)r(x) + Bu(t)
>
> r(x) describes the behavior of my diodes.
>
> I tried to use control system toolbox, but i can
> implement only non time-varying matrices, and without
> my second(R) matrix.
>
> So the question is: is it some build in tool in
> Matlab, in which i could just implement matrices(like
> ss), and if it isn't then any ideas how can i
> implement that ?


If A(t), R(t), r(x) and u(t) are smooth enough, you could solve the problem as an ordinary system of ODEs:
help ode45

Best wishes
Torsten.



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