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ÎÒÔÚÇó·´Ó¦¶¯Á¦Ñ§Ê±Óöµ½Ò»¸ö·Ç³£¼¬ÊÖµÄÎÊÌ⣬Çë´ó¼Ò°ïæ½â¾öһϣ¬ÏȶÔÿһ¸ö¹Ø×¢±¾ÌùµÄÈ˱íʾ¸Ðл£¡ ÎÊÌâÃèÊö£º ÓÐÈý¸ö¿ÉÄæ·´Ó¦×é³ÉµÄ·´Ó¦ÌåϵÈçÏ£º TG+M¡ú¡ûDG+ME (ÕýÄæ·´Ó¦ËÙÂʳ£Êý·Ö±ðΪk1¡¢k2) DG+M¡ú¡ûMG+ME (ÕýÄæ·´Ó¦ËÙÂʳ£Êý·Ö±ðΪk3¡¢k4) MG+M¡ú¡ûGL+ME (ÕýÄæ·´Ó¦ËÙÂʳ£Êý·Ö±ðΪk5¡¢k6) ½¨Á¢·´Ó¦ÒÔÉÏ·½³ÌµÄÊýѧģÐÍÈçÏ£º dTG/dt=-k1[TG][M]+ k2[DG][ME] dDG/dt=k1[TG][M]- k2[DG][ME] ¨Ck3[DG][M]+ k4[MG][ME] dMG/dt= k3[DG][M]- k4[MG][ME] ¨Ck5[MG][M]+ k6[GL][ME] dME/dt= k1[TG][M]- k2[DG][ME]+k3[DG][M]- k4[MG][ME] +k5[MG][M]- k6[GL][ME] ÆäÖÐTG¡¢DG¡¢MG¡¢MEµÄŨ¶ÈÊǿɲⶨµÄ£¬¸÷ÎïÖÊŨ¶È¼ä´æÔÚÈçϹØÏµ£º [GL]=[TG]0-[TG]-[DG]-[MG]= 0.6380-[TG]-[DG]-[MG] ; [M]=[M]0-[ME]=4.0626-[ME]; ·½³Ì³õʼֵΪ [TG]0=0.6380 [DG]0=0 [MG]0=0 [GL]0=0 [ME]0=0 [M]0=4.0626 ÎÒÓÃMATLABÇó½âijһÌõ¼þÏµĶ¯Á¦Ñ§³£Êýk£¬³ÌÐòÈçÏ£º clear all k0 = [1 1 3 1 5 1]; % ËæÒâ¸ø¶¨µÄ²ÎÊý³õÖµ lb = [0 0 0 0 0 0]; % ËæÒâ¸ø¶¨µÄ²ÎÊýÏÂÏÞ ub = [1000 1000 1000 1000 1000 1000]; % ËæÒâ¸ø¶¨µÄ²ÎÊýÉÏÏÞ X0=[0.638;0;0;0]; %t=0ʱ¿ÌËÄÖÖÎïÖÊTG¡¢DG¡¢MG¡¢MEµÄ³õʼŨ¶È Xexp=... [0.6380 0 0 0 0.1512 0.1088 0.1244 1.0757 0.0955 0.0816 0.1454 1.2740 0.0719 0.0632 0.1431 1.3858 0.0500 0.0493 0.1400 1.4838 0.0451 0.0436 0.1283 1.5247 0.0361 0.0351 0.1226 1.5762 0.0346 0.0301 0.1028 1.6149 0.0261 0.0282 0.1016 1.6460 0.0237 0.0257 0.0977 1.6630 ]; % 25¶È0.8%´ß»¯¼ÁÌõ¼þϲ»Í¬Ê±¼ä£¨0 0.5 1.5 2 3 4 5 7 10min£©¸÷Ũ¶ÈÊý¾Ý % µÚÒ»ÖÖ¼ÆËã·½·¨£¬Ê¹Óú¯Êýfmincon()½øÐвÎÊý¹À¼Æ [k,fval,flag] = fmincon(@jlzengObjFmincon,k0,[],[],[],[],lb,ub,[],[],X0,Xexp); fprintf('\nʹÓú¯Êýfmincon()¹À¼ÆµÃµ½µÄ²ÎÊýֵΪ:\n') fprintf('\tk1 = %.4f\n',k(1)) fprintf('\tk2 = %.4f\n',k(2)) fprintf('\tk3 = %.4f\n',k(3)) fprintf('\tk4 = %.4f\n',k(4)) fprintf('\tk5 = %.4f\n',k(5)) fprintf('\tk6 = %.4f\n',k(6)) fprintf(' The sum of the squares is: %.1e\n\n',fval) k_fmincon = k; %µÚ¶þÖÖ¼ÆËã·½·¨£¬Ê¹Óú¯ÊýLsqnonlin()½øÐвÎÊý¹À¼Æ [k,resnorm,residual,exitflag,Output,lambda,jacobian]=... lsqnonlin(@jlzengObjLsqnonlin,k0,lb,ub,[],X0,Xexp); ci=nlparci(k,residual,jacobian); fprintf('\n\nʹÓÃlsqnonlin()º¯Êý¹À¼ÆµÃµ½µÄ²ÎÊýֵΪ£º\n'),Output fprintf('\nʹÓú¯Êýlsqqnonlin()¹À¼ÆµÃµ½µÄ²ÎÊýֵΪ:\n') fprintf('\tk1 = %.4f\n',k(1)) fprintf('\tk2 = %.4f\n',k(2)) fprintf('\tk3 = %.4f\n',k(3)) fprintf('\tk4 = %.4f\n',k(4)) fprintf('\tk5 = %.4f\n',k(5)) fprintf('\tk6 = %.4f\n',k(6)) fprintf(' The sum of the squares is: %.1e\n\n',fval) k_fmincon = k; Èý¸ömÎļþÈçÏ£º function dXdt=jlzengkinetic(t,X,k) %½¨Á¢Î¢·Ö·½³Ì×飬¹©oed23sµ÷Óà dXdt=[ (-k(1)*X(1)*(4.0626-X(4))+k(2)*X(2)*X(4)) (k(1)*X(1)*(4.0626-X(4))-k(2)*X(2)*X(4)-k(3)*X(2)*(4.0626-X(4))+k(4)*X(3)*X(4)) (k(3)*X(2)*(4.0626-X(4))-k(4)*X(3)*X(4)-k(5)*X(3)*(4.0626-X(4))+k(6)*(0.638-X(1)-X(2)-X(3))*X(4)) (k(1)*X(1)*(4.0626-X(4))-k(2)*X(3)*(4.0626-X(4))+k(3)*X(2)*(4.0626-X(4))-k(4)*X(3)*X(4)+k(5)*X(3)*(4.0626-X(4))-k(6)*(0.638-X(1)-X(2)-X(3))*X(4))]; %-------------------------------------------------- function f = jlzengObjFmincon(k,X0,Xexp) %½¨Á¢Ê¹ÓÃfmincon()½øÐвÎÊý¹À¼ÆµÄº¯Êý tspan = [0 0.5 1 1.5 2 3 4 5 7 10]; [t X] = ode23s(@jlzengkinetic,tspan,X0,[],k); f = sum((X(:,1)-Xexp(:,1)).^2) + sum((X(:,2)-Xexp(:,2)).^2) ... + sum((X(:,3)-Xexp(:,3)).^2) + sum((X(:,4)-Xexp(:,4)).^2); %¸øÎïÖÊŨ¶ÈµÄ¼ÆËãÖµ %------------------------------------------------------ function f = jlzengObjLsqnonlin(k,X0,Xexp) %ÔÚÇ°ÃæÒѾÓÃfminconÇóµÃ²ÎÊýµÄ»ù´¡ÉÏʹÓÃLsqnonlin¶Ô²ÎÊý½øÐиü¾«È·µÄ¼ÆËã tspan =[0 0.5 1 1.5 2 3 4 5 7 10]; [t X] = ode23s(@jlzengkinetic,tspan,X0,[],k); f1 = X(:,1) - Xexp(:,1); f2 = X(:,2) - Xexp(:,2); f3 = X(:,3) - Xexp(:,3); f4 = X(:,4) - Xexp(:,4); f = [f1; f2; f3; f4]; %------------------------------------------------------- ÔËÐнá¹û·¢ÏÖ1)Á½ÖÖ·½·¨Çó³öµÄkÖµ²î±ð¼«´ó£»2£©²»¹Ü½«ÄÇ×ékÖµ´øÈë[t X] = ode23s(@jlzengkinetic,tspan,X0,[],k)Çó³öµÄŨ¶ÈÓëʵ¼ÊŨ¶È²î±ðºÜ´ó£»3£©ÈÎÒâ¸ø¶¨µÄkÖµµÄÆðʼֵ¶Ô½á¹ûÓ°Ï켫´ó¡£ Çë¸ßÊÖ°ïæ£¡ Èç¹û»¹ÓÐû±íÊöÇå³þµÄ£¬ÇëÌá³öÀ´. [ Last edited by sunxiao on 2009-3-8 at 11:17 ] |
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ÎÒ¿´ÁËÒ»ÏÂÄãµÄ·½·¨£¬¸Ð¾õºÜÐÂÓ±£¬ÊÇÒ»ÖÖ´¿´âµÄÊýÖµ½â·¨£¬Ïë±ØÄãµÄMATLAB¹¦µ×²»Ç³¡£ÄãÖ÷ÒªÊÇÏëͨ¹ýÁ½¸öÓÅ»¯¹¤¾ßÏ亯ÊýÀûÓÃ×îС¶þ³Ë·¨½â΢·Ö·½³Ì×é½ø¶øÇó³öËÙÂʳ£Êý¡£µ«ÊÇЧ¹û²»ºÃ£¬ÎÒÏëÄãÏÂÃæµÄ·ÖÎöÊÇÓеÀÀíµÄ£¬¾ÍËã·¨ÓÐЧÐÔ¶øÑÔfminconÕâ¸öº¯Êý¿Ú±®²»ÊǺܺ㬶àÊý¶¼ÊÇÓÃLINGOÈí¼þÇóÓÅ»¯ÎÊÌ⣬¸ü±ð˵Çó΢·Ö·½³Ì×éÁË£¬¶øÇÒ͸Ã÷¶ÈÒ²²»¸ßºÃÏñÔÚ½â¾öÒ»¸öºÚÏäÎÊÌ⣬Çó½â¶Ô³õʼÌõ¼þºÜÃô¸Ð¡£ ÎÒÕâÀïÓиöÏë·¨½ö¹©Äã²Î¿¼£º Õâ¸öÎÊÌâµÄ×îÖÕÄ¿µÄÊÇÇó×î¼ÑËÙÂʳ£ÊýÒÔ¾¡Á¿Âú×ã΢·Ö·½³Ì×飬ÏÖÔÚ£¬ÄãÓÐÁ˸÷¸öÎïÖÖËæÊ±¼ä±ä»¯µÄŨ¶È£¬Èç¹ûÖªµÀŨ¶ÈËæÊ±¼äµÄ±ä»¯ËÙÂÊ£¬¾Í¿ÉÒÔÖ±½Ó´úÈë΢·Ö·½³Ì×éÓ¦ÓÃ×îС¶ø³ËÇó³öËÙÂʳ£Êýk¡£ Ũ¶È±ä»¯ËÙÂʵÄ×î¼Ñ¹À¼Æ£º¿ÉÒÔ¸ù¾ÝÄãµÄʵÑéÊý¾Ý¹¹Ôì³öÔÚʵÑ鷶ΧÄÚ·ûºÏ½ÏºÃµÄ¸÷¸öÎïÖÖµÄŨ¶È·½³Ì¡£ÒÔÏÂÊÇÄâºÍ½á¹û£º /////////////////////////////////////////////////////////////////////////////// TG: f(x) = a*exp(b*x) + c*exp(d*x) Coefficients (with 95% confidence bounds): a = 0.5502 (0.5149, 0.5856) b = -3.983 (-4.797, -3.17) c = 0.08751 (0.05922, 0.1158) d = -0.1857 (-0.2901, -0.08124) Goodness of fit: SSE: 0.0004627 R-square: 0.9985 Adjusted R-square: 0.9978 RMSE: 0.008782 DG: f(x) = (p1*x^2 + p2*x + p3) / (x^2 + q1*x + q2) Coefficients (with 95% confidence bounds): p1 = 0.01908 (0.01341, 0.02475) p2 = 0.05717 (0.01411, 0.1002) p3 = -1.43e-007 (-0.0008759, 0.0008756) q1 = -0.2444 (-0.8719, 0.3831) q2 = 0.1788 (0.04132, 0.3162) Goodness of fit: SSE: 1.816e-005 R-square: 0.9979 Adjusted R-square: 0.9963 RMSE: 0.001906 MG: f(x) = (p1*x^2 + p2*x + p3) / (x^2 + q1*x + q2) Coefficients (with 95% confidence bounds): p1 = 0.07364 (0.04582, 0.1015) p2 = 0.3095 (-0.1137, 0.7328) p3 = 1.802e-005 (-0.00794, 0.007976) q1 = 0.9642 (-1.498, 3.426) q2 = 0.6633 (0.1897, 1.137) Goodness of fit: SSE: 0.0001089 R-square: 0.9933 Adjusted R-square: 0.988 RMSE: 0.004666 ME: f(x) = (p1*x + p2) / (x^2 + q1*x + q2) Coefficients (with 95% confidence bounds): p1 = 2169 (-1.654e+004, 2.088e+004) p2 = 0.9198 (-23.22, 25.06) q1 = 1265 (-9708, 1.224e+004) q2 = 406.4 (-3050, 3862) Goodness of fit: SSE: 0.003249 R-square: 0.9986 Adjusted R-square: 0.9978 RMSE: 0.02327 /////////////////////////////////////////////////////////////////////// Õ⼸¸öŨ¶È·½³ÌµÄÄâºÍ½á¹ûÈçÈ總¼þÖÐËùʾ¡£ È»ºó¾Í¿ÉÒÔ¼ÆËãÔÚʵÑéʱ¼äµãÉÏTG, DG, MG, MEµÄŨ¶È¶Ôʱ¼äµÄµ¼ÊýÁË£¬½á¹ûÈçÏ£º//////////////////////////////////////////////////////////////////////// >> dTGdt=[-2.20812330989885;-0.313903194394831;-0.0543072642775238;-0.0178664548644437;-0.0119669262873315;-0.00932216291313879;-0.00773110042346866;-0.00642090783831632;-0.00442930197092527;-0.00253772213004114]' dTGdt = -2.2081 -0.3139 -0.0543 -0.0179 -0.0120 -0.0093 -0.0077 -0.0064 -0.0044 -0.0025 >> dDGdt=[0.319813865326457;-0.0194568056055164;-0.0513088546928754;-0.0279068843505723;-0.0164124937537988;-0.00737171342598024;-0.00411902140843388;-0.00261612659035434;-0.00131890646666286;-0.000639095343223927;]' dDGdt = 0.3198 -0.0195 -0.0513 -0.0279 -0.0164 -0.0074 -0.0041 -0.0026 -0.0013 -0.0006 >> dMGdt=[0.466367050839715;0.0999072143408668;0.00933499024234685;-0.00972884650823934;-0.0127379996363272;-0.0104546020606972;-0.00764618068387975;-0.00566858666344666;-0.00339187374122912;-0.00186232961806277;]' dMGdt = 0.4664 0.0999 0.0093 -0.0097 -0.0127 -0.0105 -0.0076 -0.0057 -0.0034 -0.0019 >> dMEdt=[5.28500993498458;0.818198974835815;0.315950868952596;0.165592835535058;0.101261692838514;0.0484953510802743;0.0278523652553689;0.0177021334686043;0.00842980322026890;0.00327667396220621;]' dMEdt = 5.2850 0.8182 0.3160 0.1656 0.1013 0.0485 0.0279 0.0177 0.0084 0.0033 >> //////////////////////////////////////////////////////////////////////////// Ö®ºóµÄ¹¤×÷¾ÍÊǰÑÕâËÄ×éÊý¾ÝºÍʵÑéÊý¾Ý´úÈë΢·Ö·½³Ì×飬Çó³ö×î¼ÑËÙÂʳ£Êý¡£ |
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ÏÂÃæÊǶÔËÙÂʳ£ÊýkµÄÇó½â£º ÄãÄǸö΢·Ö·½³Ì×é¿ÉÒÔд³ÉÏÂÃæÕâÖÖ¾ØÕóÐÎʽ£º C'=A*k ÏÂÃæµÄÈËÎï¾ÍÊÇÈçºÎ½â³ök °´ÕÕÂ¥ÉÏËù˵µÄ·½·¨£º C'= -2.2081 0.3198 0.4664 5.2850 -0.3139 -0.0195 0.0999 0.8182 -0.0543 -0.0513 0.0093 0.3160 -0.0179 -0.0279 -0.0097 0.1656 -0.0120 -0.0164 -0.0127 0.1013 -0.0093 -0.0074 -0.0105 0.0485 -0.0077 -0.0041 -0.0076 0.0279 -0.0064 -0.0026 -0.0057 0.0177 -0.0044 -0.0013 -0.0034 0.0084 -0.0025 -0.0006 -0.0019 0.0033 A= -2.5919 0 0 0 0 0 2.5919 0 0 0 0 0 0 0 0 0 0 0 2.5919 0 0 0 0 0 -0.4516 0.0135 0 0 0 0 0.4516 -0.0135 -0.3250 0.1338 0 0 0 0 0.3250 -0.1338 -0.3716 0.0315 0.4516 -0.0135 0.3250 0.1338 0.3716 -0.0315 -0.2663 0.0119 0 0 0 0 0.2663 -0.0119 -0.2275 0.1852 0 0 0 0 0.2275 -0.1852 -0.4055 0.0459 0.2663 -0.0119 0.2275 0.1852 0.4055 -0.0459 -0.1925 0.0090 0 0 0 0 0.1925 -0.0090 -0.1692 0.1983 0 0 0 0 0.1692 -0.1983 -0.3831 0.0515 0.1925 -0.0090 0.1692 0.1983 0.3831 -0.0515 -0.1289 0.0069 0 0 0 0 0.1289 -0.0069 -0.1271 0.2077 0 0 0 0 0.1271 -0.2077 -0.3610 0.0558 0.1289 -0.0069 0.1271 0.2077 0.3610 -0.0558 -0.1145 0.0056 0 0 0 0 0.1145 -0.0056 -0.1107 0.1956 0 0 0 0 0.1107 -0.1956 -0.3256 0.0540 0.1145 -0.0056 0.1107 0.1956 0.3256 -0.0540 -0.0898 0.0043 0 0 0 0 0.0898 -0.0043 -0.0873 0.1932 0 0 0 0 0.0873 -0.1932 -0.3048 0.0545 0.0898 -0.0043 0.0873 0.1932 0.3048 -0.0545 -0.0847 0.0031 0 0 0 0 0.0847 -0.0031 -0.0737 0.1660 0 0 0 0 0.0737 -0.1660 -0.2516 0.0484 0.0847 -0.0031 0.0737 0.1660 0.2516 -0.0484 -0.0631 0.0029 0 0 0 0 0.0631 -0.0029 -0.0681 0.1672 0 0 0 0 0.0681 -0.1672 -0.2455 0.0490 0.0631 -0.0029 0.0681 0.1672 0.2455 -0.0490 -0.0569 0.0025 0 0 0 0 0.0569 -0.0025 -0.0617 0.1625 0 0 0 0 0.0617 -0.1625 -0.2344 0.0480 0.0569 -0.0025 0.0617 0.1625 0.2344 -0.0480 k=A\C' 1.0065 17.2251 0.6860 0.1923 0.9624 5.9171 |
5Â¥2009-03-05 22:01:19













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