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From: Davide Sanseverinati on 10 Jul 2010 06:20
Hi

i want to identify the parameters of a transfer using the identification toolbox. My transfer function is characterized by 3 real zeros and 2 couples of complex conjugate poles. In the identification toolbox, i can choose at most a transfer function with 1 zero and 1 complex conjugate pole. Is there a way to insert my transfer function in the tool?

thanks in advance

Davide
From: Oskar Vivero on 10 Jul 2010 07:20
"Davide Sanseverinati" <john.doe.nospam(a)mathworks.com> wrote in message <i19hgl$q6k$1(a)fred.mathworks.com>...
> Hi
>
> i want to identify the parameters of a transfer using the identification toolbox. My transfer function is characterized by 3 real zeros and 2 couples of complex conjugate poles. In the identification toolbox, i can choose at most a transfer function with 1 zero and 1 complex conjugate pole. Is there a way to insert my transfer function in the tool?
>
> thanks in advance
>
> Davide

Read the help. This is fairly easy to do.
From: Davide Sanseverinati on 14 Jul 2010 04:45
"Oskar Vivero" <oskar.vivero.nospam(a)gmail.com> wrote in message <i19l1n$r3g$1(a)fred.mathworks.com>...
> "Davide Sanseverinati" <john.doe.nospam(a)mathworks.com> wrote in message <i19hgl$q6k$1(a)fred.mathworks.com>...
> > Hi
> >
> > i want to identify the parameters of a transfer using the identification toolbox. My transfer function is characterized by 3 real zeros and 2 couples of complex conjugate poles. In the identification toolbox, i can choose at most a transfer function with 1 zero and 1 complex conjugate pole. Is there a way to insert my transfer function in the tool?
> >
> > thanks in advance
> >
> > Davide
>
> Read the help. This is fairly easy to do.

Hi Oscar

i've read the help but i haven't found what i exactly need. I've only found that with 'idpoly' i can build a transfer function, but i cannot set zeros and poles as parameters.
Do you know how to do it?
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