THÈSE DE DOCTORAT Ecole Doctorale « Sciences et ...
THÈSE DE DOCTORAT Ecole Doctorale « Sciences et ...
THÈSE DE DOCTORAT Ecole Doctorale « Sciences et ...
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Annexe D. Théorèmes du p<strong>et</strong>it gain pour des systèmes paramétrés 207<br />
γ ω 1<br />
2 (γωb 2<br />
1 (ηω 1<br />
2 (γωb 2<br />
1 (ηωa 2<br />
2 (γu 2 (‖u 2‖ [t0 ,t) )))))),γω 1<br />
2 (γωb 2<br />
1 (ηω 1<br />
2 (γωb 2<br />
1 (ηu 2 (‖u 2‖ [t0 ,t) ))))),<br />
γ ω 1<br />
2 (γωb 2<br />
1 (ηω 1<br />
2 (m))),<br />
γ ω 1<br />
2 (γωb 2<br />
1 (ηωa 2<br />
2 (‖ωa 2(x 2 )‖ [<br />
t<br />
2 ,t)))),<br />
γ ω 1<br />
2 (γωb 2<br />
1 (ηu 2 (‖u 2 ‖ [<br />
t<br />
,t)))), 2<br />
γ ω 1<br />
2 (γu 1 (‖u 1‖ [<br />
t<br />
,t))), 2<br />
γ u 2 (‖u 2 ‖ [<br />
t<br />
2 ,t)) }<br />
. (D.109)<br />
que l’on écrit sous la forme :<br />
|ω a 2 (x 2(t))| ≤ max<br />
{<br />
˜β2 (max { |ω 1 (x 1 (t 0 ))|,|ω 2 (x 2 (t 0 ))| } ,t)<br />
˜σ u 2 (max { ‖u 1 ‖ [t0 ,t) , ‖u 2‖ [t0 ,t)<br />
}<br />
),<br />
˜σ 2 m (m),˜σω 2 (max { |ω 1 (x 1 (t 0 ))|,|ω 2 (x 2 (t 0 ))| } ),<br />
}<br />
γ ω 1<br />
2 (γωa 2<br />
1 (‖ωa 2 (x 2)‖ [<br />
t<br />
2 ,t))),γω 1<br />
2 (γωb 2<br />
1 (ηωa 2<br />
2 (‖ωa 2 (x 2)‖ [t0 ,t)))) , (D.110)<br />
où, pour (s,t) ∈ R 2 ≥0 ,<br />
{<br />
˜β 2 (s,t) = max β 2 (2β 2 (s,0), t 2 ),β 2(2γ ω 1<br />
2 (β 1(s,0)), t 2 ),<br />
β 2 (2γ ω 1<br />
2 (γωb 2<br />
1 (α 2(s))), t 2 ),<br />
β 2 (2γ ω 1<br />
2 (γωb 2<br />
1 (ηω 1<br />
2 (β 1(s,0)))), t 2 ),<br />
β 2 (2γ ω 1<br />
2 (γωb 2<br />
1 (ηω 1<br />
2 (γωa 2<br />
1 (β 2(s,0))))), t 2 ),<br />
β 2 (2γ ω 1<br />
2 (γωb 2<br />
1 (ηω 1<br />
2 (γωb 2<br />
1 (α 2(s))))), t 2 ),<br />
β 2 (2γ ω 1<br />
2 (γωb 2<br />
1 (ηω 1<br />
2 (γωb 2<br />
1 (ηωa 2<br />
2 (β 2(s,0)))))), t 2 ),<br />
β 2 (2α 2 (s), t 2 ),β 2(2η ω 1<br />
2 (β 1(s,0)), t 2 ),<br />
β 2 (2η ω 1<br />
2 (γωa 2<br />
1 (β 2(s,0))), t 2 ),β 2(2η ω 1<br />
2 (γωb 2<br />
1 (α 2(s))), t 2 ),