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amenboss

Ìú³æ (³õÈëÎÄ̳)

[ÇóÖú] ÓÃMatlabÇó·´Ó¦¶¯Á¦Ñ§²ÎÊý

ÖмäÏÈÄâºÏΪһ¶ÎÒ»¼¶ºÍÒ»¶Î¶þ¼¶£¬²¢Çó³ö¸÷µãµÄµ¼Êý£¬×îºóÄâºÏ³öÐèÒªµÄ²ÎÊý¡£ÄâºÏ¹ý³ÌÖгöÏÖµ¼ÊýΪ¸ºÊý£¬Çó¸÷λ´óÉñÖ¸µ¼£¡
´úÂëÈçÏ£º
clc;
clear all;
format short g
%%%·Ö¶ÎÇó½â  Ò»¼¶
expE1=[0        2054.794521
300        903.6835616
600        449.3047945];

t1=expE1(:,1);
C0=expE1(1,2);
C1=expE1(:,2);
LCO=log(C0);
LC=log(C1);
d=LCO-LC;

K0=[0.02];
K=lsqcurvefit(@FunS,K0,t1,d);

mdcdt1=K.*C1;

%%%%·Ö¶ÎÇó½â ¶þ¼¶

expE2=[900        200.3150685
1200        107.0773973
1500        78.67123288
2100        57.00136986
2700        47.67328767
3300        38.26164384
3900        28.4
4500        21.78219178];
C02=expE2(1,2);
C2=expE2(:,2);
t2=expE2(:,1);
RC2=1./C2;
d2=RC2-1/C02;

K20=[0.02];
K2=lsqcurvefit(@FunS2,K20,t2,d2);

mdcdt2=K2.*(C2.^2);
%%%%ºÏ²¢Çó²ÎÊý
mdcdt=[mdcdt1;mdcdt2];
C=[C1;C2];

%%%% T=250CÏ£¬mnts³õÖµP0
P0=[89 0.0328 110 2284.62585];
P=lsqcurvefit(@FunP,P0,C,mdcdt)

mdcdt3=(P(1)+P(2).*C)./(P(3)+1/P(4)./C./C)
figure
plot(C,mdcdt,'r-');
hold on;
plot(C,mdcdt3,'b*')


function f=FunS(K,t1)
f=K(1).*t1;
function f=FunS2(K2,t2)
f=K2(1).*t2;

function f=FunP(P,C)
f=(P(1)+P(2).*C)./(P(3)+1/P(4)./C./C);
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