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  • Committer: Bazaar Package Importer
  • Author(s): Torsten Werner
  • Date: 2005-01-09 22:58:21 UTC
  • mfrom: (1.1.1 upstream)
  • Revision ID: james.westby@ubuntu.com-20050109225821-473xr8vhgugxxx5j
Tags: 3.0-12
http://bugs.debian.org/255869
changed configure.in to build scilab's own malloc.o, closes: #255869

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man/control/imrep2ss.man
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.TH imrep2ss 4 "April 1993" "Scilab Group" "Scilab Function"
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.so ../sci.an 
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.SH NAME
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imrep2ss - state-space realization of an impulse response 
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.SH CALLING SEQUENCE
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.nf
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[sl]=imrep2ss(v [,deg])
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.fi
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.SH PARAMETERS
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.TP 10
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v 
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: vector coefficients of impulse response, \fVv(:,k)\fR is the kth sample
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.TP
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deg
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: integer (order required)
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.TP
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sl
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: \fVsyslin\fR list
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.SH DESCRIPTION
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Impulse response to linear system conversion (one input).
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\fVv\fR must have an even number of columns.
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.SH EXAMPLE
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.nf
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s=poly(0,'s');
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H=[1/(s+0.5);2/(s-0.4)]   //strictly proper
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np=20;w=ldiv(H('num'),H('den'),np);
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rep=[w(1:np)';w(np+1:2*np)'];   //The impulse response
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H1=ss2tf(imrep2ss(rep))
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z=poly(0,'z');
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H=(2*z^2-3.4*z+1.5)/(z^2-1.6*z+0.8)     //Proper transfer function
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u=zeros(1,20);u(1)=1;
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rep=rtitr(H('num'),H('den'),u);   //Impulse rep. 
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//   <=> rep=ldiv(H('num'),H('den'),20)
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w=z*imrep2ss(rep)   //Realization with shifted impulse response 
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// i.e strictly proper to proper
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H2=ss2tf(w);
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.fi
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.SH SEE ALSO
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frep2tf, arl2, time_id, armax, markp2ss, ldiv
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