scilab/modules/cacsd/help/ja_JP/evans.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" version="5.0-subset Scilab" xml:lang="ja" xml:id="evans">
  14     <refnamediv>
  15         <refname>evans</refname>
  16         <refpurpose>エバンス根軌跡</refpurpose>
  17     </refnamediv>
  18     <refsynopsisdiv>
  19         <title>呼び出し手順</title>
  20         <synopsis>evans(H [,kmax])</synopsis>
  21     </refsynopsisdiv>
  22     <refsection>
  23         <title>引数</title>
  24         <variablelist>
  25             <varlistentry>
  26                 <term>H</term>
  27                 <listitem>
  28                     <para>
  29                         伝達関数または状態空間表現で指定した
  30                         SISO線形システム (参照: <link linkend="syslin">syslin</link>).
  31                     </para>
  32                 </listitem>
  33             </varlistentry>
  34             <varlistentry>
  35                 <term>kmax</term>
  36                 <listitem>
  37                     <para>実数 (プロットに用いるゲインの最大値)</para>
  38                 </listitem>
  39             </varlistentry>
  40         </variablelist>
  41     </refsection>
  42     <refsection>
  43         <title>説明</title>
  44         <para>
  45             状態空間または伝達形式 H(s)のSISO線形システム
  46             (<link linkend="syslin">syslin</link>)のエバンス根軌跡を出力します.
  47             これは,複素平面における
  48             <literal>1+k*H(s)=1+k*N(s)/D(s)</literal>の根軌跡です.
  49             選択された点のゲイン<literal>k &lt;= kmax</literal>に関して,
  50             <literal>D(s)+k*N(s)</literal>の根の虚部が実部に対してプロットされます.
  51         </para>
  52         <para>
  53             根軌跡の指定した点におけるゲインを得るには,
  54             <link linkend="datatips">データティップ</link>マネージャを
  55             アクティブにし,根軌跡の任意の点をクリックします.
  56         </para>
  57     </refsection>
  58     <refsection>
  59         <title>例</title>
  60         <programlisting role="example"><![CDATA[
  61     H=syslin('c',352*poly(-5,'s')/poly([0,0,2000,200,25,1],'s','c'));
  62     clf();evans(H,100);sgrid()
  63     [Ki,s]=kpure(H) // Gains that give pure imaginary closed loop poles
  64     plot([real(s) real(s)],[imag(s) -imag(s)],'*r')
  65
  66     [Kr,s]=krac2(H)
  67     ]]></programlisting>
  68         <para>
  69             <inlinemediaobject>
  70                 <imageobject>
  71                     <imagedata fileref="../images/evans.svg"/>
  72                 </imageobject>
  73             </inlinemediaobject>
  74         </para>
  75     </refsection>
  76     <refsection role="see also">
  77         <title>参照</title>
  78         <simplelist type="inline">
  79             <member>
  80                 <link linkend="syslin">syslin</link>
  81             </member>
  82             <member>
  83                 <link linkend="sgrid">sgrid</link>
  84             </member>
  85             <member>
  86                 <link linkend="zgrid">zgrid</link>
  87             </member>
  88             <member>
  89                 <link linkend="kpure">kpure</link>
  90             </member>
  91             <member>
  92                 <link linkend="krac2">krac2</link>
  93             </member>
  94             <member>
  95                 <link linkend="datatips">datatips</link>
  96             </member>
  97         </simplelist>
  98     </refsection>
  99 </refentry>