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Linear Matrix Inequalities in Control

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Analysis (4)<br />

Robust stability – example<br />

q Δ<br />

k<br />

w<br />

u<br />

e<br />

F C G o<br />

k<br />

p<br />

z<br />

2<br />

k<br />

q<br />

z<br />

2<br />

k G0C(<br />

I G0C)<br />

1<br />

k(<br />

I G C)<br />

0<br />

1<br />

kG0CF(<br />

I<br />

G CF(<br />

I<br />

0<br />

G0C)<br />

G C)<br />

0<br />

1<br />

1<br />

p<br />

w<br />

KSO materiały do wykładu 2008/09 49<br />

A<br />

C<br />

A<br />

Analysis (5)<br />

Robust stability – example<br />

G<br />

0<br />

C1<br />

C<br />

k max<br />

2<br />

0<br />

1<br />

; C<br />

2<br />

s<br />

B0Dr<br />

C<br />

BrC0<br />

0<br />

kC0<br />

C<br />

0<br />

0<br />

0.748<br />

B0Cr<br />

Ar<br />

0<br />

2.35(1 s)<br />

; F<br />

(1 0.1s<br />

)<br />

0 0<br />

; D<br />

0 0<br />

B0Dr<br />

C<br />

f<br />

BrC<br />

f<br />

A<br />

f<br />

D<br />

D<br />

11<br />

21<br />

; B<br />

D<br />

D<br />

12<br />

22<br />

1.2<br />

;<br />

s 1.2<br />

B0Dr<br />

k<br />

Brk<br />

0<br />

0<br />

k<br />

0<br />

0<br />

KSO materiały do wykładu 2008/09 50<br />

;<br />

B0Dr<br />

Df<br />

Br<br />

Df<br />

B<br />

f<br />

;<br />

Demo no.4<br />

Optimiser: SeDuMi<br />

Preprocesor: YALMIP<br />

Run the presented example with some simulations to<br />

confirm the result.<br />

KSO materiały do wykładu 2008/09 51<br />

17

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