1 <?xml version="1.0" encoding="UTF-8"?>
3 * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
6 * This file must be used under the terms of the CeCILL.
7 * This source file is licensed as described in the file COPYING, which
8 * you should have received as part of this distribution. The terms
9 * are also available at
10 * http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
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="nicholschart">
15 <refname>nicholschart</refname>
16 <refpurpose>ニコルス線図</refpurpose>
20 <synopsis>nicholschart([ modules [,args [,colors]]])</synopsis>
29 <para>実数ベクトル (モジュール (単位: dB))</para>
35 <para>r実数ベクトル (位相 (単位: 度))</para>
41 <para>スカラーまたはベクトル, 等ゲインまたは等位相曲線の色インデックスs</para>
49 ニコルス線図をプロット: <literal>y</literal>の位相/ゲイン平面への
50 <literal>y/(1+y)</literal>の等モジュールおよび等引数等高線をプロット
53 <literal>nicholschart</literal> は,<link linkend="black">black</link>
57 <literal>modules</literal>および<literal>args</literal>の
58 デフォルト値はそれぞれ次のようになります :
61 <literal>[-12 -8 -6 -5 -4 -3 -2 -1.4 -1 -.5 0.25 0.5 0.7 1 1.4 2 2.3 3 4 5 6 8 12]</literal>
64 <literal>[-(1:10) , -(20:10:160)]</literal>
69 <programlisting role="example"><![CDATA[
72 nicholschart(modules=[-6 -3 -1 1 3 6], args=[-1 -20 20 40 80 160 180]);
77 <imagedata fileref="../images/nicholschart.svg"/>
81 <programlisting role="example"><![CDATA[
82 //ニコルス線図のグリッドを付けたブラック図
84 Plant=syslin('c',16000/((s+1)*(s+10)*(s+100)));
87 PID=syslin('c',(1/(2*xsi*tau*s))*(1+2*xsi*tau*s+tau^2*s^2));
89 black([Plant;Plant*PID ],0.01,100,["Plant";"Plant and PID corrector"]);
91 ax=gca();Leg=ax.children(1);
92 Leg.legend_location="in_lower_right";
93 nicholschart(colors=color('light gray')*[1 1])
98 <imagedata fileref="../images/black2.svg"/>
103 <refsection role="see also">
105 <simplelist type="inline">
107 <link linkend="black">black</link>
110 <link linkend="nyquist">nyquist</link>
113 <link linkend="hallchart">hallchart</link>