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.TH sysconv 1 "April 1993" "Scilab Group" "Scilab Function"
.so ../sci.an
.SH NAME
sysconv - system conversion
.SH CALLING SEQUENCE
.nf
[s1,s2]=sysconv(s1,s2)
.fi
.SH PARAMETERS
s1,s2
: list (linear \fVsyslin\fR systems)
.SH DESCRIPTION
Converts \fVs1\fR and \fVs2\fR into common representation in order that
system interconnexion operations can be applied. Utility function for
experts. The conversion rules in given in the following table.
.TP 8
"c"
: continuous time system
.TP
"d"
: discrete time system
.TP
n
: sampled system with sampling period n
.TP
[]
: system with undefined time domain
For mixed systems \fVs1\fR and \fVs2\fR are put in state-space representation.
.nf
s1\\s2| "c" | "d" | n2 | [] |
---------------------------------------------------------------
"c" | nothing |uncompatible | c2e(s1,n2) | c(s2) |
---------------------------------------------------------------
"d" |uncompatible| nothing | e(s1,n2) | d(s2) |
---------------------------------------------------------------
n1 | c2e(s2,n1) | e(s2,n1) | n1<>n2 uncomp | e(s2,n1) |
| | | n1=n2 nothing | |
---------------------------------------------------------------
[] | c(s1) | d(s1) | e(s1,n2) | nothing |
---------------------------------------------------------------
.fi
With the following meaning:
.TP 12
n1,n2
: sampling period
.TP
c2e(s,n)
: the continuous-time system s is transformed into
a sampled system with sampling period n.
.TP
c(s)
: conversion to continuous (time domain is \fV"c"\fR)
.TP
d(s)
: conversion to discrete (time domain is \fV"d"\fR)
.TP
e(s,n)
: conversion to samples system with period \fVn\fR
.SH EXAMPLE
.nf
s1=ssrand(1,1,2);
s2=ss2tf(s1);
[s1,s2]=sysconv(s1,s2);
.fi
.SH SEE ALSO
syslin, ss2tf, tf2ss
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