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colregul          Scilab Group          Scilab Function            colregul
NAME
   colregul - removing poles and zeros at infinity
  
CALLING SEQUENCE
 [Stmp,Ws]=colregul(Sl,alfa,beta) 
PARAMETERS
 Sl,Stmp         : syslin lists
                 
 alfa,beta       : reals (new pole and zero positions)
                 
DESCRIPTION
   computes a prefilter Ws such that Stmp=Sl*Ws is proper and  with full
  rank D matrix.
  
   Poles at infinity of Sl are moved to alfa;
  
   Zeros at infinity of Sl are moved to beta;
  
   Sl is a assumed to be a left invertible linear system (syslin list) in
  state-space representation with possibly a polynomial D matrix.
  
SEE ALSO
   invsyslin, inv, rowregul, rowshuff
  
AUTHOR
   F. D. , R. N.