1
<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
2
<!DOCTYPE MAN SYSTEM "../../manrev.dtd">
4
<LANGUAGE>eng</LANGUAGE>
6
<TYPE>Scilab Function</TYPE>
7
<DATE>April 1993</DATE>
8
<SHORT_DESCRIPTION name="dscr"> discretization of linear system</SHORT_DESCRIPTION>
10
<CALLING_SEQUENCE_ITEM>[sld [,r]]=dscr(sl,dt [,m]) </CALLING_SEQUENCE_ITEM>
15
<PARAM_NAME>sl</PARAM_NAME>
17
<SP>: <VERB>syslin</VERB> list containing <VERB>[A,B,C,D]</VERB>.</SP>
21
<PARAM_NAME>dt</PARAM_NAME>
23
<SP>: real number, sampling period</SP>
27
<PARAM_NAME>m</PARAM_NAME>
29
<SP>: covariance of the input noise (continuous time)(default value=0)</SP>
33
<PARAM_NAME>r</PARAM_NAME>
35
<SP>: covariance of the output noise (discrete time) given if <VERB>m</VERB> is given as input</SP>
39
<PARAM_NAME>sld</PARAM_NAME>
41
<SP>: sampled (discrete-time) linear system, <VERB>syslin</VERB> list</SP>
48
Discretization of linear system. <VERB>sl</VERB> is a continuous-time system:</P>
49
<P><VERB>dx/dt=A*x+B*u (+ noise)</VERB>.</P>
50
<P><VERB>sld</VERB> is the discrete-time system obtained by
51
sampling <VERB>sl</VERB> with the sampling period <VERB>dt</VERB>.</P>
56
Sys=syslin('c',[1,1/(s+1);2*s/(s^2+2),1/s])
57
ss2tf(dscr(tf2ss(Sys),0.1))