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[ÇóÖú] matlabÏßÐÔ¾ØÕó²»µÈʽÇó½â×öÓÅ»¯ÎÊÌâ

ÔÚÇó½âÈçÏÂ͹ÓÅ»¯ÎÊÌâÖÐÓöµ½ÁËÎÊÌ⣺
1.²»ÖªµÀÈçºÎ±à³ÌµÃµ½×îÓŵĦò
2.Çó½âÌáʾΪûÓпÉÐнâ
ÊÇ·ñÊÇÎÒÍ˳öµÄ²»µÈʽÓÐÎÊÌâ  »òÕ߯äËû·½ÃæÓÐÎÊÌâ
A=[0,1,0,-1;-882,-28.4,0,28.4;0,0,0,1;1696.15,54.62,-657.12,-2680.39;];
B=[0,0,0,-0.039]';
Bw=[0,0,-1,2625.77]';
C1=[-882,-28.4,0,28.4];
C2=[0,0,10,0];
Ea=[0,0,-65.71,262.58]
%Eb=0
L=[0,0,0,1]'
I=eye(1)
gam=4.2; %¦Ã=gam
a=0.01;   %¦Ñ=a
b=0.1;   %¦Å=b
c=inv(b);
umax=3000

setlmis([]);
X=lmivar(1,[4 1]);       %¶¨Òå¾ö²ß±äÁ¿
Z=lmivar(2,[1 4]);

lmiterm([1 1 1 X],A,1,'s');
lmiterm([1 1 1 Z],B,1,'s');
lmiterm([1 1 2 0],L);
lmiterm([1 1 3 X],1,Ea'); %Ea¡úEa'
lmiterm([1 1 4 0],Bw);
lmiterm([1 1 5 X],1,C1');
lmiterm([1 2 2 0],-c);
lmiterm([1 3 3 0],-b);
lmiterm([1 4 4 0],-gam^2);
lmiterm([1 5 5 0],-1);
lmiterm([-2 1 1 X],1,1);
lmiterm([3 1 1 0],-1);
lmiterm([3 1 2 Z],0.95,1);
lmiterm([3 2 2 X],-3000,1);
lmiterm([4 1 1 0],-1);
lmiterm([4 1 2 X],C2,0.95);
lmiterm([4 2 2 X],-1,1);

lmisys=getlmis;   %Íê³ÉLTI¿ò¼ÜµÄÉèÉèÖÃ
[tmin,xfeas]=feasp(lmisys);  %Çó½â¿ÉÐнâÎÊÌâ
X=dec2mat(lmisys,xfeas,X);  %ÌáÈ¡½â¾ØÕ󠠰Ѿö²ß±äÁ¿×ª»¯Îª¾ØÕóÐÎʽ
Z=dec2mat(lmisys,xfeas,Z);
P=inv(X);
K=Z*P

ÔËÐÐÌáʾΪ£º
Solver for LMI feasibility problems L(x) < R(x)
    This solver minimizes  t  subject to  L(x) < R(x) + t*I
    The best value of t should be negative for feasibility

Iteration   :    Best value of t so far

     1                     2487.161836
     2                     1661.789005
     3                     1200.565677
     4                      542.424422
     5                      311.999933
     6                      311.999933
     7                      279.917289
     8                      279.917289
***                 new lower bound:    36.447556

Result:  best value of t:   279.917289
          f-radius saturation:  0.000% of R = 1.00e+009

These LMI constraints were found infeasible


K =

    2.0861    0.1139  -16.8718    3.5340
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