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  • Committer: Bazaar Package Importer
  • Author(s): Torsten Werner
  • Date: 2002-03-21 16:57:43 UTC
  • Revision ID: james.westby@ubuntu.com-20020321165743-e9mv12c1tb1plztg
Tags: upstream-2.6
Import upstream version 2.6

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