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hi all! There is something that I really do not understand!! I have run a simulation in which I compare outputs of an s-function and the implementation of the s-function as simuling blocks (no derivatives involved in the s-function, only algebra) and the outputs are different (by small amounts in determinates instants of time, not completely different, but remarkably different)!! Furthermore if I output from the s-function the same expression written in different ways, those 2 outputs are different! Can somebody comment on this? Have you seen something similar? Are there restrictions or recommendations on the use of s-functions?? cheers, Sergio |
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Simulink and S-functions
Started by ●February 3, 2003
Reply by ●February 4, 20032003-02-04
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Hi, Can you give more details on the type of expressions you were using? Is your S-function multi-rate? There is a document on "writing S-functions". That should have all info needed. Navan --- Sergio Dominguez <> wrote: > hi all! > > There is something that I really do not understand!! > I have run a simulation > in which I compare outputs of an s-function and the > implementation of the > s-function as simuling blocks (no derivatives > involved in the s-function, only > algebra) and the outputs are different (by small > amounts in determinates > instants of time, not completely different, but > remarkably different)!! Furthermore if I output from > the > s-function the same expression written in different > ways, those 2 outputs are > different! Can somebody comment on this? Have you > seen something similar? Are > there restrictions or recommendations on the use of > s-functions?? > > cheers, > > Sergio __________________________________________________ |
