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tspan = [78.666667 59.000000 47.200000 39.333333  33.714286 29.500000 ];
x0=[0; 0; 0 ];
k0 = [0 0 0 0 0 0 0 0 0];%ËÙÂʳ£Êý£¬Æ½ºâ³£Êý³õÖµ
lb = [0 0 0 0 0 0 0 0 0];
ub = [+inf +inf +inf +inf +inf +inf +inf +inf +inf];
data=...
[
78.666667   0.957100   0.797360   0.162324 70 2.5
59.000000   0.859400   0.792711   0.083877 70 2.5
47.200000   0.833500   0.764903   0.068597 70 2.5
39.333333   0.757000   0.709688   0.047313 50 1.5
33.714286   0.739600   0.699588   0.040012 50 1.5
29.500000   0.721000   0.686608   0.034392 50 1.5
];
yexp=data(:,2:4);%È¡¾ØÕó2-6ÁÐÊý¾Ý
% ʹÓú¯Êýlsqnonlin()½øÐвÎÊý¹À¼Æ
[k,resnorm,residual,exitflag,output,lambda,jacobian] = ...
lsqnonlin(@ObjFunc,k0,lb,ub,[],tspan,x0,yexp);
ci = nlparci(k,residual,jacobian);
fprintf('\n\nʹÓú¯Êýlsqnonlin()¹À¼ÆµÃµ½µÄ²ÎÊýֵΪ:\n')
fprintf('\tk1 = %.4f ¡À %.4f\n',k(1),ci(1,2)-k(1))
fprintf('\tk2 = %.4f ¡À %.4f\n',k(2),ci(2,2)-k(2))
fprintf('\tk3 = %.4f ¡À %.4f\n',k(3),ci(3,2)-k(3))       
fprintf('\tk4 = %.4f ¡À %.4f\n',k(4),ci(4,2)-k(4))
fprintf('\tk5 = %.4f ¡À %.4f\n',k(5),ci(5,2)-k(5))
fprintf('\tk6 = %.4f ¡À %.4f\n',k(6),ci(6,2)-k(6))
fprintf('\tk7 = %.4f ¡À %.4f\n',k(7),ci(7,2)-k(7))
fprintf('\tk8 = %.4f ¡À %.4f\n',k(8),ci(8,2)-k(8))
fprintf('\tk9 = %.4f ¡À %.4f\n',k(9),ci(9,2)-k(9))
fprintf('  The sum of the squares is: %.1e\n\n',resnorm)

function f = ObjFunc(k,tspan,x0,yexp)           % Ä¿±êº¯Êý
[t Xsim] = ode45(@KineticsEqs,tspan,x0,[],k);
ysim(:,1) = Xsim(2:end,1);
ysim(:,2) = Xsim(2:end,2);
ysim(:,3) = Xsim(2:end,3);
f =(sum((ysim(:,1)-yexp(:,1))^2)+sum((ysim(:,2)-yexp(:,2))^2)
+sum((ysim(:,3)-yexp(:,3))^2))/72;

function dCdt = KineticsEqs(t,C,k)              % ODEÄ£ÐÍ·½³Ì,tΪ¿Õʱ,Cת»¯ÂÊ¡¢ÊÕÂÊ
P1=((1/(C(5)+1))*(1-C(2))*C(6))/(1-((1/(C(5)+1))*C(2))-((1/(C(5)+1))*C(4)));
P2=((C(5)/(C(5)+1))-2*(1/(C(5)+1)*C(3)-4*(1/(C(5)+1)*C(4)/(1-((1/(C(5)+1))*C(2))-((1/(C(5)+1))*C(4)));
P3=((1/(C(5)+1)*C(3))/(1-((1/(C(5)+1))*C(2))-((1/(C(5)+1))*C(4)));
P4=((1/(C(5)+1)*C(4))/(1-((1/(C(5)+1))*C(2))-((1/(C(5)+1))*C(4)));
P5=(((1/(C(5)+1)*C(3))+2*((1/(C(5)+1)*C(4)))/(1-((1/(C(5)+1))*C(2))-((1/(C(5)+1))*C(4)));
% k(1) = Kdmo,k(1)=Kh;k(3)=Kmg;k(4)=Keg,k(5)=Kme; k(6)=k1£¬k(7)=k2, k(8)=Kp1£¬k(9)=Kp2,
%P(1)=Pdmo,P(2)=Ph,P3=Pmg,P4=Peg,P5=Pme;
theB = 1+k(4)*P4+k5*P5+((k(1)*P3*P5*P5)/(k(8)*(P2^3));
theC =k(7)*(P3-(P3*P5)/(k(9)*(P2^2));
r1 = theA/theB;
r2 = theC/theB;

dCAdt = - r1;
dCBdt = r1 - r2 ;
       
dCdt = [dCAdt; dCBdt];

??? Error using ==> feval
Undefined function or method 'ObjFunc' for input arguments of type 'double'.

Error in ==> lsqnonlin at 203
            initVals.F = feval(funfcn{3},xCurrent,varargin{:});

Caused by:
    Failure in initial user-supplied objective function evaluation. LSQNONLIN cannot continue.


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