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Scilabヘルプ >> CACSD > Linear System Representation > des2tf

# des2tf

### 呼び出し手順

```[S]=des2tf(sl)
[Bfs,Bis,chis]=des2tf(sl)```

### パラメータ

sl

リスト (記述子形式の線形システム)

Bfs, Bis

chis

S

### 説明

`S=C*(s*E-A)^(-1)*B+D`

`S=Bfs/chis - Bis`

`chis``(s*E-A)` の行列式 (xcative定数に一致)です;

### 例

```s=poly(0,'s');
G=[1/(s+1),s;1+s^2,3*s^3];
Descrip=tf2des(G);Tf1=des2tf(Descrip)
Descrip2=tf2des(G,"withD");Tf2=des2tf(Descrip2)
[A,B,C,D,E]=Descrip2(2:6);Tf3=C*inv(s*E-A)*B+D```

### 参照

• glever — 行列ペンシルの逆
• pol2des — 記述形式の多項式行列
• tf2des — 伝達関数をディスクリプタ形式に変換
• ss2tf — 状態空間から伝達関数への変換
• des2ss — 記述子から状態空間へ
• rowshuff — シャッフルアルゴリズム

### Comments

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