scilab/modules/cacsd/help/en_US/krac2.xml

   1 <?xml version="1.0" encoding="UTF-8"?>
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  13 <refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" xmlns:scilab="http://www.scilab.org" xml:lang="en" xml:id="krac2">
  14     <refnamediv>
  15         <refname>krac2</refname>
  16         <refpurpose>continuous SISO system limit feedback gain</refpurpose>
  17     </refnamediv>
  18     <refsynopsisdiv>
  19         <title>Calling Sequence</title>
  20         <synopsis>g=krac2(sys)</synopsis>
  21     </refsynopsisdiv>
  22     <refsection>
  23         <title>Arguments</title>
  24         <variablelist>
  25             <varlistentry>
  26                 <term>sys</term>
  27                 <listitem>
  28                     <para>SISO linear system (syslin)</para>
  29                 </listitem>
  30             </varlistentry>
  31             <varlistentry>
  32                 <term>g</term>
  33                 <listitem>
  34                     <para>constant</para>
  35                 </listitem>
  36             </varlistentry>
  37         </variablelist>
  38     </refsection>
  39     <refsection>
  40         <title>Description</title>
  41         <para>
  42             <literal>krac2(sys)</literal> computes the gains <literal>g</literal> such that the system
  43             <literal>sys</literal> feedback by g (<literal>sys/.g</literal>) has  2 real equal poles.
  44         </para>
  45     </refsection>
  46     <refsection>
  47         <title>Examples</title>
  48         <programlisting role="example"><![CDATA[
  49 h=syslin('c',352*poly(-5,'s')/poly([0,0,2000,200,25,1],'s','c'));
  50 clf();evans(h,100)
  51 g=krac2(h)
  52 hf1=h/.g(1);roots(denom(hf1))
  53 hf2=h/.g(2);roots(denom(hf2))
  54  ]]></programlisting>
  55     </refsection>
  56     <refsection role="see also">
  57         <title>See Also</title>
  58         <simplelist type="inline">
  59             <member>
  60                 <link linkend="evans">evans</link>
  61             </member>
  62             <member>
  63                 <link linkend="kpure">kpure</link>
  64             </member>
  65         </simplelist>
  66     </refsection>
  67 </refentry>