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.TH dscr 1 "April 1993" "Scilab Group" "Scilab Function"
.so ../sci.an
.SH NAME
dscr - discretization of linear system
.SH CALLING SEQUENCE
.nf
[sld [,r]]=dscr(sl,dt [,m])
.fi
.SH PARAMETERS
.TP 10
sl
: \fVsyslin\fR list containing \fV[A,B,C,D]\fR.
.TP
dt
: real number, sampling period
.TP
m
: covariance of the input noise (continuous time)(default value=0)
.TP
r
: covariance of the output noise (discrete time) given if \fVm\fR is
given as input
.TP
sld
: sampled (discrete-time) linear system, \fVsyslin\fR list
.SH DESCRIPTION
Discretization of linear system. \fVsl\fR is a continuous-time system:
.LP
\fVdx/dt=A*x+B*u (+ noise)\fR.
.LP
\fVsld\fR is the discrete-time system obtained by
sampling \fVsl\fR with the sampling period \fVdt\fR.
.SH EXAMPLE
.nf
s=poly(0,'s');
Sys=syslin('c',[1,1/(s+1);2*s/(s^2+2),1/s])
ss2tf(dscr(tf2ss(Sys),0.1))
.fi
.SH SEE ALSO
syslin, flts, dsimul
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