Digital Filter Feedback Loop

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Flanders
Flanders am 27 Aug. 2014
Bearbeitet: Flanders am 27 Aug. 2014
Hey, So I am trying to implement a digital filter network that incorporates a feedback loop. I have defined all the individual digital filters using the dfilt.dflt construct, and I can't seem to collapse the entire thing into one big digital filter (it is way to complex to go through by hand). It would be a standard digital filter transfer function that would look like G(z)/(1+G(z)H(z)).
I would like to use something like the "feedback" command that can be used for transfer functions. However, I can't seem to get that to work for the dfilt constructs. I also attempted converting the dfilt constructs into transfer functions, but because I have a cascaded filter (maybe 100), it became way too complex.
Is there a simple way to accomplish this collapsing of a feedback loop into one single digital filter, with the dfilt constructs?
Many thanks!

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