File: contrss.man

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.TH contrss 1 "April 1993" "Scilab Group" "Scilab Function"
.so ../sci.an 
.SH NAME
contrss - controllable part
.SH CALLING SEQUENCE
.nf
[slc]=contrss(sl [,tol])
.fi
.SH PARAMETERS
.TP
sl
: linear system (\fVsyslin\fR list)
.TP
tol 
: is a threshold for controllability (see \fVcontr\fR). 
default value is \fVsqrt(%eps)\fR.
.SH DESCRIPTION
returns the controllable part of the linear 
system \fVsl = (A,B,C,D)\fR in state-space form. 
.SH EXAMPLE
.nf
A=[1,1;0,2];B=[1;0];C=[1,1];sl=syslin('c',A,B,C);  //Non minimal
slc=contrss(sl);
sl1=ss2tf(sl);sl2=ss2tf(slc);      //Compare sl1 and sl2
.fi
.SH SEE ALSO
cont_mat, ctr_gram, cont_frm, contr