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From: Fernando on 16 Jun 2010 22:36
Hi all,

I've been trying to use the system identification toolbox to estimate a causal Laplace transfer function that matches an impulse response without much success. I am new to the sysID toolbox (but I am a avid Matlab user). My question is the following. Suppose you have some data stored in a vector, call it v, and you want to get a rational transfer function, in the Laplace domain, whose impulse response matches the data. Ie, the values of v are considered samples from h(t). Thus, if h(t) is the impulse response, the values the vector v(n) = h((n-1)T) so the that v(1) = h(0), v(2) = h(T) and so on.

I stress that I want a Laplace domain model (the z-domain mode is trivial).

Any suggestion will be appreciated.

Thanks,

Fernando.
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