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  • Committer: Bazaar Package Importer
  • Author(s): Torsten Werner
  • Date: 2002-03-21 16:57:43 UTC
  • Revision ID: james.westby@ubuntu.com-20020321165743-e9mv12c1tb1plztg
Tags: upstream-2.6
Import upstream version 2.6

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man/robust/tf2des.man
 
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.TH tf2des 1 "April 1993" "Scilab Group" "Scilab Function"
 
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.so ../sci.an
 
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.SH NAME
 
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tf2des - transfer function to descriptor
 
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.SH CALLING SEQUENCE
 
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.nf
 
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S=tf2des(G)
 
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S=tf2des(G,flag)
 
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.fi
 
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.SH PARAMETERS
 
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.TP
 
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G
 
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: linear system (\fVsyslin\fR list) with possibly polynomial \fVD\fR matrix
 
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.TP
 
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flag
 
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: character string \fV"withD"\fR
 
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.TP
 
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S
 
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: list
 
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.SH DESCRIPTION
 
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Transfer function to descriptor form: \fVS=list('d',A,B,C,D,E)\fR
 
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.nf
 
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  E*xdot = A*x+B*u
 
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  y = C*x + D*u
 
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.fi
 
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Note that \fVD=0\fR if the optional parameter flag=\fV"withD"\fR is not
 
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given. Otherwise a maximal rank \fVD\fR matrix is returned in the fifth
 
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entry of the list \fVS\fR
 
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.SH EXAMPLE
 
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.nf
 
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s=poly(0,'s');
 
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G=[1/(s-1),s;1,2/s^3];
 
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S1=tf2des(G);des2tf(S1)
 
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S2=tf2des(G,"withD");des2tf(S2)
 
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.fi
 
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.SH SEE ALSO
 
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pol2des, tf2ss, ss2des, des2tf
 
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