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.TH rowregul 1 "April 1993" "Scilab Group" "Scilab Function"
.so ../sci.an
.SH NAME
rowregul - removing poles and zeros at infinity
.SH CALLING SEQUENCE
.nf
[Stmp,Ws]=rowregul(Sl,alfa,beta)
.fi
.SH PARAMETERS
.TP 15
Sl,Stmp
: \fVsyslin\fR lists
.TP 10
alfa,beta
: real numbers (new pole and zero positions)
.SH DESCRIPTION
computes a postfilter \fVWs\fR such that \fVStmp=Ws*Sl\fR is proper and
with full rank \fVD\fR matrix.
.LP
Poles at infinity of \fVSl\fR are moved to \fValfa\fR;
.LP
Zeros at infinity of \fVSl\fR are moved to \fVbeta\fR;
.LP
\fVSl\fR is a assumed to be a right invertible linear system (\fVsyslin\fR list)
in state-space representation with possibly a polynomial \fVD\fR matrix.
.LP
This function is the dual of colregul (see function code).
.SH EXAMPLE
.nf
s=%s;
w=[1/s,0;s/(s^3+2),2/s];
Sl=tf2ss(w);
[Stmp,Ws]=rowregul(Sl,-1,-2);
Stmp('D') // D matrix of Stmp
clean(ss2tf(Stmp))
.fi
.SH SEE ALSO
invsyslin, colregul
.SH AUTHOR
F. D. , R. N.
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