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S-function: propagation error.

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max
max am 27 Dez. 2012
Geschlossen: MATLAB Answer Bot am 20 Aug. 2021
I've got a problem with S-function builder in simulink. I realized a complicated S-function, in input there are matrix with cond number very high. The results are wrong if the output is feed back for using at the next step. The error increase step by step, it starts at 10^-13 and it goes at 10^3.
How it's possible that? there are any propagation error?
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Kaustubha Govind
Kaustubha Govind am 27 Dez. 2012
Do you use a Delay block in the feedback loop? This might be important if your S-function is a direct feedthrough block.

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