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Scilabヘルプ >> CACSD > Linear Analysis > Frequency Domain > freson

freson

ピーク周波数

呼び出し手順

fr=freson(h)

パラメータ

h

syslin リスト

fr

ピーク周波数のベクトル (単位: Hz)

説明

SISOプラント h に関して, ピーク周波数のベクトル(単位: Hz)を返します.

Continuous time system

h = syslin('c',-1+%s,(3+2*%s+%s^2)*(50+0.1*%s+%s^2));
fr = freson(h)
clf
bode(h);
fig=gcf();sca(fig.children(2));
[phi,db] = phasemag(repfreq(h,fr));
plot(fr,db(:),'+r')

Discrete time system

h = syslin('c',-1+%s,(3+2*%s+%s^2)*(50+0.1*%s+%s^2));
hd = dscr(h, 0.05);
fr = freson(hd)
clf
bode(hd);
fig=gcf();sca(fig.children(2));
[phi,db] = phasemag(repfreq(hd,fr));
plot(fr,db(:),'+r');

参照

  • frep2tf — 周波数応答から伝達関数実現を得る
  • zgrid — zgrid プロット
  • h_norm — H無限大ノルム

履歴

VersionDescription
6.0

handling discrete systems and zpk representation, peak detection improved.

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Last updated:
Tue Feb 25 08:53:20 CET 2020