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.TH gamitg 5 "April 1993" "Scilab Group" "Scilab Function"
.so ../sci.an
.SH NAME
gamitg - H-infinity gamma iterations
.SH CALLING SEQUENCE
.nf
[gopt]=gamitg(G,r,prec [,options]);
.fi
.SH PARAMETERS
.TP 10
G
: \fVsyslin\fR list (plant realization )
.TP
r
: 1x2 row vector (dimension of \fVG22\fR)
.TP
prec
: desired relative accuracy on the norm
.TP
option
: string \fV't'\fR
.TP
gopt
: real scalar, optimal H-infinity gain
.SH DESCRIPTION
\fVgopt=gamitg(G,r,prec [,options])\fR
returns the H-infinity optimal gain \fVgopt\fR.
.LP
\fVG\fR contains the state-space matrices \fV[A,B,C,D]\fR of
the plant with the usual partitions:
.nf
B = ( B1 , B2 ) , C = ( C1 ) , D = ( D11 D12)
( C2 ) ( D21 D22)
.fi
These partitions are implicitly given in \fVr\fR: \fVr(1)\fR
and \fVr(2)\fR are the dimensions of \fVD22\fR (rows x columns)
.LP
With \fVoption='t'\fR, \fVgamitg\fR traces each bisection step, i.e.,
displays the lower and upper bounds and the current test point.
.SH SEE ALSO
ccontrg, h_inf
.SH AUTHOR
P. Gahinet
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