Dear Mik,
you can find an extensive source of information on 'polynomial' control synthesis (also called algebraic or input-output approach) at the web page of PolyX company, a producer of a control-oriented Matlab package for computing with polynomials and polynomial matrices.
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Have a look at Tutorials part:
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you will find some links to graduate courses on linear systems and control design biased towards the polynomial approach.
Best regards, Zdenek Hurak
Mik wrote:
Hello to all!
> I'm a student of University of Cagliari, Sardinia, Italy and i need some
> information about polynomial synthesis for digital control.
> How can find some good explanation?
>
> Thanks to all
>
> PS: Excuse me for my terrible english, but I'm Italian...!!!