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<?xml version="1.0" encoding="UTF-8"?>
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* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
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* Copyright (C) INRIA -
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* This file must be used under the terms of the CeCILL.
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* This source file is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at
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* http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
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<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="abcd">
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<refname>abcd</refname>
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<refpurpose> 状態空間行列</refpurpose>
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<title>呼び出しの手順</title>
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<synopsis>[A,B,C,D]=abcd(sl)</synopsis>
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<para>状態空間表現または伝達関数表現の
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線形システム (<literal>syslin</literal> リスト)
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<para>適当な次元の実数行列</para>
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線形システム<literal>Sl</literal>の<literal>A,B,C,D</literal> 行列を返す.
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ユーティリティ関数.伝達関数行列<literal>Sl</literal>の場合、
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<literal>tf2ss</literal>により状態空間表現に変換される.
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行列 <literal>A,B,C,D</literal> は<literal>syslin</literal>リスト
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<literal>Sl</literal>の <literal>2</literal> から <literal>5</literal>
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までの要素、すなわち、<literal>[A,B,C,D] = Sl(2:5)</literal>、である.
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<programlisting role="example"><![CDATA[
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A=diag([1,2,3]);B=[1;1;1];C=[2,2,2];
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sys=syslin('c',A,B,C);
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[A1,B1,C1,D1]=abcd(sys);
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<refsection role="see also">
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<simplelist type="inline">
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<link linkend="syslin">syslin</link>
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<link linkend="ssrand">ssrand</link>