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[scilab.git] / scilab / modules / cacsd / help / ja_JP / plot_display / evans.xml
1 <?xml version="1.0" encoding="UTF-8"?>
2 <!--
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12  * For more information, see the COPYING file which you should have received
13  * along with this program.
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16 <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="ja" xml:id="evans">
17     <refnamediv>
18         <refname>evans</refname>
19         <refpurpose>エバンス根軌跡</refpurpose>
20     </refnamediv>
21     <refsynopsisdiv>
22         <title>呼び出し手順</title>
23         <synopsis>evans(H [,kmax])</synopsis>
24     </refsynopsisdiv>
25     <refsection>
26         <title>引数</title>
27         <variablelist>
28             <varlistentry>
29                 <term>H</term>
30                 <listitem>
31                     <para>
32                         伝達関数または状態空間表現で指定した
33                         SISO線形システム (参照: <link linkend="syslin">syslin</link>).
34                     </para>
35                 </listitem>
36             </varlistentry>
37             <varlistentry>
38                 <term>kmax</term>
39                 <listitem>
40                     <para>実数 (プロットに用いるゲインの最大値)</para>
41                 </listitem>
42             </varlistentry>
43         </variablelist>
44     </refsection>
45     <refsection>
46         <title>説明</title>
47         <para>
48             状態空間または伝達形式 H(s)のSISO線形システム
49             (<link linkend="syslin">syslin</link>)のエバンス根軌跡を出力します.
50             これは,複素平面における
51             <literal>1+k*H(s)=1+k*N(s)/D(s)</literal>の根軌跡です.
52             選択された点のゲイン<literal>k &lt;= kmax</literal>に関して,
53             <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.
54         </para>
55         <para>
56             根軌跡の指定した点におけるゲインを得るには,
57             <link linkend="datatips">データティップ</link>マネージャを
58             アクティブにし,根軌跡の任意の点をクリックします.
59         </para>
60     </refsection>
61     <refsection>
62         <title>例</title>
63         <programlisting role="example"><![CDATA[
64     H=syslin('c',352*poly(-5,'s')/poly([0,0,2000,200,25,1],'s','c'));
65     clf();evans(H,100);sgrid()
66     [Ki,s]=kpure(H) // Gains that give pure imaginary closed loop poles
67     plot([real(s) real(s)],[imag(s) -imag(s)],'*r')
68     [Kr,s]=krac2(H)
69     ]]></programlisting>
70         <para>
71             <scilab:image localized="true">
72                 H=syslin('c',352*poly(-5,'s')/poly([0,0,2000,200,25,1],'s','c'));
73                 clf();evans(H,100);sgrid()
74                 [Ki,s]=kpure(H)
75                 plot([real(s) real(s)],[imag(s) -imag(s)],'*r')
76                 [Kr,s]=krac2(H)
77             </scilab:image>
78         </para>
79     </refsection>
80     <refsection role="see also">
81         <title>参照</title>
82         <simplelist type="inline">
83             <member>
84                 <link linkend="syslin">syslin</link>
85             </member>
86             <member>
87                 <link linkend="sgrid">sgrid</link>
88             </member>
89             <member>
90                 <link linkend="zgrid">zgrid</link>
91             </member>
92             <member>
93                 <link linkend="kpure">kpure</link>
94             </member>
95             <member>
96                 <link linkend="krac2">krac2</link>
97             </member>
98             <member>
99                 <link linkend="datatips">datatips</link>
100             </member>
101         </simplelist>
102     </refsection>
103 </refentry>