bk +Uek -lek sk k k 十 bk Ie(s=Y(sve(s)--complex frequence domain Ay2(s)V2(s)=Al2(3)=A(s) V(S)=Vb(S)+V(s=AV,(s)+V(s) AYe(s)A V(S)+ASV(s=l(s) or AY(S)A V(S)=-AY(s)V(s)+Al(s)• • • • e = s Ai Ai Ie s = Ye s Ve s − −complex frequence domain • • • ( ) ( ) ( ) AY (s)V (s) AI (s) AI (s) e e e s • • • • • • •  = = V (s) V (s) V (s) A V (s) V (s) n s T e b s • • • • • •  = + = + AY (s) A V (s) AY (s)V (s) AI (s) n e s s T e • • • • • • • • • + = or AY (s) A V (s) AY (s)V (s) AI (s) n e s s T e • • • • • • • • • = − + bk i ek i sk i +ek − + bk −  sk Zek