view m-toolbox/test/test_pzmodel_fromParfrac.m @ 0:f0afece42f48

Import.
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Wed, 23 Nov 2011 19:22:13 +0100
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% TEST pzmodel/fromParfrac
% 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% HISTORY:     23-04-2009 L Ferraioli
%                 Creation
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% VERSION

'$Id: test_pzmodel_fromParfrac.m,v 1.1 2009/10/21 12:50:43 luigi Exp $';

%% test

% build parfrac model
pfm = parfrac([1 0.3+0.7i 0.3-0.7i],[-2 -3.1+0.35i -3.1-0.35i],0);

% convert to pzmodel
pzm = pzmodel(pfm);

% get response of models
f = [logspace(-5,1,300)]';
rpfm = resp(pfm,plist('f',f));
rpzm = resp(pzm,plist('f',f));

% plot
iplot(rpfm,rpzm)
iplot(abs(rpfm)./abs(rpzm))