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birdcanfly½ð³æ (ÕýʽдÊÖ)
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[ÇóÖú]
΢·Ö·½³Ìode45Çó½â£¬×îС¶þ³Ë·¨ÓÅ»¯Î¢·Ö·½³Ì²ÎÊý£¬³ÌÐòÔËÐÐÇóÖú ÒÑÓÐ1È˲ÎÓë
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·ÂÕÕÏÂÃæµÄÌû×Ó£¨http://muchong.com/bbs/viewthread.php?tid=6425538&authorid=1122189£©½øÐÐÁ˳ÌÐ޸ģ¬Çó½â΢·Ö·½³Ì×éµÄϵÊý£¬Î¢·Ö·½³Ì×éÖаüº¬ÁËָǰϵÊýºÍ»î»¯ÄÜ¡£ ÏÖÔÚÔËÐгÌÐò£¬matlabÅÜÆðÀ´Ã»Í꣬ÎÞ½á¹û£¬ÎÞ±¨´í¡£ÇëÇó¸ßÊÖÖ¸µã£¬ÐÖúµ÷ͨ³ÌÐò£¬50½ð±ÒÏàл£¡ *********************** ³ÌÐò´úÂëÈçÏ£º function k1k2k3 format long clear all clc k0 = [1e40 1e20 1e40 1e30 100e3 50e3 100e3 100e3 0.8]; lb = [0 0 0 0 0 0 0 0 0]; ub = [inf inf inf inf inf inf inf inf 1]; data=... [ 0.00 100.000 0.00000 0.00000 0.00000 0.21 78.8686 18.802 1.99667 0 0.22 59.2346 37.9368 2.66223 0.332779 0.23 48.0865 46.7554 4.49251 0.166389 0.24 37.1048 57.0715 5.32446 0.665557 0.25 29.6173 61.2313 8.31947 0.831947 0.253 31.1148 59.5674 9.65058 0.831947 0.258 29.7837 61.2313 7.8203 0.998336 0.26 22.629 63.3943 12.3128 1.16473 0.263 24.792 60.3993 13.4775 1.33111 0.266 21.9634 62.396 13.9767 1.4975 0.27 21.2978 63.228 13.1448 1.83028 0.272 24.6256 59.0682 14.3095 1.66389 0.277 17.3045 58.4027 21.1314 3.1614 0.28 17.4709 58.7354 20.9651 2.82862 0.29 23.7937 49.9168 22.4626 3.32779 0.3 18.3028 43.7604 31.1148 6.48918 ]; x0=data(1,2:end); tspan=data(:,1)'; yexp = [data(2:end,2) data(2:end,3) data(2:end,4) data(2:end,5)]; [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 = %.9f ¡À %.9f\n',k(1),ci(1,2)-k(1)) fprintf('\tk2 = %.9f ¡À %.9f\n',k(2),ci(2,2)-k(2)) fprintf('\tk3 = %.9f ¡À %.9f\n',k(3),ci(3,2)-k(3)) fprintf('\tk4 = %.9f ¡À %.9f\n',k(4),ci(4,2)-k(4)) fprintf('\tEa1 = %.9f ¡À %.9f\n',k(5),ci(5,2)-k(5)) fprintf('\tEa2 = %.9f ¡À %.9f\n',k(6),ci(6,2)-k(6)) fprintf('\tEa3 = %.9f ¡À %.9f\n',k(7),ci(7,2)-k(7)) fprintf('\tEa4 = %.9f ¡À %.9f\n',k(8),ci(8,2)-k(8)) fprintf('\ta = %.9f ¡À %.9f\n',k(9),ci(9,2)-k(9)) fprintf(' The sum of the squares is: %.9e\n\n',resnorm) ts=0 (max(tspan)-min(tspan))/100):max(tspan);[ts ys] = ode45(@KineticsEqs,ts,x0,[],k); yy = [data(:,2) data(:,3) data(:,4)]; I100=100*ones(16,1); plot(ts,ys(:,1),'b',tspan,yy(:,1),'bo'); hold on plot(ts,ys(:,2)+ys(:,3),'r',tspan,yy(:,2),'r*'); plot(ts,ys(:,4),'k',tspan,yy(:,3),'k+'); plot(ts,I100(:,1)-ys(:,1)-ys(:,2)-ys(:,3)-ys(:,4),'g',tspan,yy(:,4),'g<') legend('C1µÄ¼ÆËãÖµ','C1µÄʵÑéÖµ','C2µÄ¼ÆËãÖµ*5','C2µÄʵÑéÖµ*5','C3µÄ¼ÆËãÖµ*5','C3µÄʵÑéÖµ*5','C4µÄ¼ÆËãÖµ','C4µÄʵÑéÖµ') function f = ObjFunc(k,tspan,x0,yexp) % Ä¿±êº¯Êý [t Xsim] = ode45(@KineticsEqs,tspan,x0,[],k);% Çó½â³£Î¢·Ö·½³Ì£¬ÆäÖÐtspanΪtµÄȡֵµã£¬x0Ϊ΢·Ö·½³Ì×éµÄ³õʼֵ£¬kΪ΢·Ö·½³ÌµÄϵÊý£¬·µ»ØtΪ΢·Ö·½³Ì×é½âµÄȡֵµã£¬XsimΪ΢·Ö·½³Ì×éµÄ½â Xsim1=Xsim(:,1);%ÌáÈ¡XsimµÄµÚÒ»ÁÐ Xsim2=Xsim(:,2);%ÌáÈ¡XsimµÄµÚ¶þÁÐ Xsim3=Xsim(:,3);%ÌáÈ¡XsimµÄµÚÈýÁÐ Xsim4=Xsim(:,4);%ÌáÈ¡XsimµÄµÚËÄÁÐ ysim(:,1) = Xsim1(2:end);%΢·Ö·½³ÌµÄµÚÒ»¸ö±äÁ¿£¬´ÓµÚ¶þ¸ö½âµ½×îºóÒ»¸ö½â¸³Öµ¸øysimµÄµÚÒ»ÁÐ ysim(:,2) = Xsim2(2:end);%΢·Ö·½³ÌµÄµÚ¶þ¸ö±äÁ¿£¬´ÓµÚ¶þ¸ö½âµ½×îºóÒ»¸ö½â¸³Öµ¸øysimµÄµÚ¶þÁÐ ysim(:,3) = Xsim3(2:end);%΢·Ö·½³ÌµÄµÚÈý¸ö±äÁ¿£¬´ÓµÚ¶þ¸ö½âµ½×îºóÒ»¸ö½â¸³Öµ¸øysimµÄµÚÈýÁÐ ysim(:,4) = Xsim4(2:end);%΢·Ö·½³ÌµÄµÚËĸö±äÁ¿£¬´ÓµÚ¶þ¸ö½âµ½×îºóÒ»¸ö½â¸³Öµ¸øysimµÄµÚËÄÁÐ I100=100*ones(16,1); f = [(ysim(:,1)-yexp(:,1)) (ysim(:,2)+ysim(:,3)-yexp(:,2)) (ysim(:,4)-yexp(:,3)) (I100-ysim(:,1)-ysim(:,2)-ysim(:,3)-ysim(:,4)-yexp(:,4))];%ÐγÉÄ¿±êÓÅ»¯º¯Êý function dCdt = KineticsEqs(t,C,k) % ODEÄ£ÐÍ·½³Ì£¬CΪŨ¶È£¬kΪ΢·Ö·½³ÌÖеÄϵÊý£¬tΪµ¼Êý a=k(9); Ea1=k(5); Ea2=k(6); Ea3=k(7); Ea4=k(8); R=8.314; Ttime=(-960.5*t^2+842.1*t+56.66+273.15); dC1dt =-k(1)*exp(-Ea1/(R*Ttime))*C(1);%µÚÒ»¸ö΢·Ö·½³Ì£¬µÈºÅÇ°ÃæÊÇC(1)¶ÔtµÄ΢·Ö dC2dt =k(1)*exp(-Ea1/(R*Ttime))*a*C(1)-k(2)*exp(-Ea2/(R*Ttime))*C(2);%µÚ¶þ¸ö΢·Ö·½³Ì£¬µÈºÅÇ°ÃæÊÇC(2)¶ÔtµÄ΢·Ö dC3dt =k(2)*exp(-Ea2/(R*Ttime))*C(2)-k(3)*exp(-Ea3/(R*Ttime))*C(3);%µÚÈý¸ö΢·Ö·½³Ì£¬µÈºÅÇ°ÃæÊÇC(3)¶ÔtµÄ΢·Ö dC4dt =k(3)*exp(-Ea3/(R*Ttime))*C(3)-k(4)*exp(-Ea4/(R*Ttime))*C(4);%µÚËĸö΢·Ö·½³Ì£¬µÈºÅÇ°ÃæÊÇC(4)¶ÔtµÄ΢·Ö dCdt = [dC1dt; dC2dt;dC3dt;dC4dt];%΢·Ö·½³Ì×é |
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dikeway
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- Ó¦Öú: 1 (Ó×¶ùÔ°)
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- ×¢²á: 2014-09-13
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2Â¥2014-09-18 22:12:01
birdcanfly
½ð³æ (ÕýʽдÊÖ)
- Ó¦Öú: 8 (Ó×¶ùÔ°)
- ½ð±Ò: 735.7
- É¢½ð: 406
- ºì»¨: 3
- Ìû×Ó: 320
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- ³æºÅ: 399057
- ×¢²á: 2007-06-11
- ÐÔ±ð: GG
- רҵ: ÉúÎïÒ½Óø߷Ö×Ó²ÄÁÏ
|
¿ÉÒÔ˳ÀûÔËÐУ¬Çó³öÁ˲ÎÊý£¬¿ÉÒԺܺõÄÄâºÏÎÄÏ×ÖеÄÊý¾Ý£¬µ«ÊDzÎÊýºÍÎÄÏ×±¨µÀµÄ²ÎÊý²îºÃ¼¸¸öÊýÁ¿¼¶¡£ ********************* function k1k2k3 format short e clear all clc k0 = [1.0 1.0 1.0 1.0 139 59 169 100 0.8]; lb = [0 0 0 0 0 0 0 0 0]; ub = [inf inf inf inf inf inf inf inf 1]; data=... [ 0.21 78.8686 18.802 1.99667 0 0.22 59.2346 37.9368 2.66223 0.332779 0.23 48.0865 46.7554 4.49251 0.166389 0.24 37.1048 57.0715 5.32446 0.665557 0.25 29.6173 61.2313 8.31947 0.831947 0.253 31.1148 59.5674 9.65058 0.831947 0.258 29.7837 61.2313 7.8203 0.998336 0.26 22.629 63.3943 12.3128 1.16473 0.263 24.792 60.3993 13.4775 1.33111 0.266 21.9634 62.396 13.9767 1.4975 0.27 21.2978 63.228 13.1448 1.83028 0.272 24.6256 59.0682 14.3095 1.66389 0.277 17.3045 58.4027 21.1314 3.1614 0.28 17.4709 58.7354 20.9651 2.82862 0.29 23.7937 49.9168 22.4626 3.32779 0.3 18.3028 43.7604 31.1148 6.48918 ]; x0=data(1,2:end); tspan=data(:,1); yexp = [data(2:end,2) data(2:end,3) data(2:end,4) data(2:end,5)]; [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 = %e ¡À %e\n',k(1),ci(1,2)-k(1)) fprintf('\tk2 = %e ¡À %e\n',k(2),ci(2,2)-k(2)) fprintf('\tk3 = %e ¡À %e\n',k(3),ci(3,2)-k(3)) fprintf('\tk4 = %e ¡À %e\n',k(4),ci(4,2)-k(4)) fprintf('\tEa1 = %e ¡À %e\n',k(5),ci(5,2)-k(5)) fprintf('\tEa2 = %e ¡À %e\n',k(6),ci(6,2)-k(6)) fprintf('\tEa3 = %e ¡À %e\n',k(7),ci(7,2)-k(7)) fprintf('\tEa4 = %e ¡À %e\n',k(8),ci(8,2)-k(8)) fprintf('\ta = %f ¡À %f\n',k(9),ci(9,2)-k(9)) ts=0.210 (max(tspan)-min(tspan))/100):max(tspan);[ts ys] = ode45(@KineticsEqs,ts,x0,[],k); yy = [data(:,2) data(:,3) data(:,4) data(:,5)]; I100=100*ones(101,1); plot(ts,ys(:,1),'b',tspan,yy(:,1),'bo'); hold on plot(ts,ys(:,2)+ys(:,3),'r',tspan,yy(:,2),'r*'); plot(ts,ys(:,4),'k',tspan,yy(:,3),'k+'); plot(ts,I100-ys(:,1)-ys(:,2)-ys(:,3)-ys(:,4),'g',tspan,yy(:,4),'g<') legend('C1µÄ¼ÆËãÖµ','C1µÄʵÑéÖµ','C2µÄ¼ÆËãÖµ','C2µÄʵÑéÖµ','C3µÄ¼ÆËãÖµ','C3µÄʵÑéÖµ','C4µÄ¼ÆËãÖµ','C4µÄʵÑéÖµ') function f = ObjFunc(k0,tspan,x0,yexp) % Ä¿±êº¯Êý [t Xsim] = ode45(@KineticsEqs,tspan,x0,[],k0);% Çó½â³£Î¢·Ö·½³Ì£¬ÆäÖÐtspanΪtµÄȡֵµã£¬x0Ϊ΢·Ö·½³Ì×éµÄ³õʼֵ£¬kΪ΢·Ö·½³ÌµÄϵÊý£¬·µ»ØtΪ΢·Ö·½³Ì×é½âµÄȡֵµã£¬XsimΪ΢·Ö·½³Ì×éµÄ½â Xsim1=Xsim(:,1);%ÌáÈ¡XsimµÄµÚÒ»ÁÐ Xsim2=Xsim(:,2);%ÌáÈ¡XsimµÄµÚ¶þÁÐ Xsim3=Xsim(:,3);%ÌáÈ¡XsimµÄµÚÈýÁÐ Xsim4=Xsim(:,4);%ÌáÈ¡XsimµÄµÚËÄÁÐ ysim(:,1) = Xsim1(2:end);%΢·Ö·½³ÌµÄµÚÒ»¸ö±äÁ¿£¬´ÓµÚ¶þ¸ö½âµ½×îºóÒ»¸ö½â¸³Öµ¸øysimµÄµÚÒ»ÁÐ ysim(:,2) = Xsim2(2:end);%΢·Ö·½³ÌµÄµÚ¶þ¸ö±äÁ¿£¬´ÓµÚ¶þ¸ö½âµ½×îºóÒ»¸ö½â¸³Öµ¸øysimµÄµÚ¶þÁÐ ysim(:,3) = Xsim3(2:end);%΢·Ö·½³ÌµÄµÚÈý¸ö±äÁ¿£¬´ÓµÚ¶þ¸ö½âµ½×îºóÒ»¸ö½â¸³Öµ¸øysimµÄµÚÈýÁÐ ysim(:,4) = Xsim4(2:end);%΢·Ö·½³ÌµÄµÚËĸö±äÁ¿£¬´ÓµÚ¶þ¸ö½âµ½×îºóÒ»¸ö½â¸³Öµ¸øysimµÄµÚËÄÁÐ I100=100*ones(15,1); f = [(ysim(:,1)-yexp(:,1)) (ysim(:,2)+ysim(:,3)-yexp(:,2)) (ysim(:,4)-yexp(:,3)) (I100-ysim(:,1)-ysim(:,2)-ysim(:,3)-ysim(:,4)-yexp(:,4))];%ÐγÉÄ¿±êÓÅ»¯º¯Êý function dCdt = KineticsEqs(t,C,k) % ODEÄ£ÐÍ·½³Ì£¬CΪŨ¶È£¬kΪ΢·Ö·½³ÌÖеÄϵÊý£¬tΪµ¼Êý a=k(9); Ea1=k(5); Ea2=k(6); Ea3=k(7); Ea4=k(8); R=8.314; Ttime=(-960.5*t^2+842.1*t+56.66+273.15); dC1dt =-k(1)*exp(-Ea1/(R*Ttime))*C(1);%µÚÒ»¸ö΢·Ö·½³Ì£¬µÈºÅÇ°ÃæÊÇC(1)¶ÔtµÄ΢·Ö dC2dt =k(1)*exp(-Ea1/(R*Ttime))*a*C(1)-k(2)*exp(-Ea2/(R*Ttime))*C(2);%µÚ¶þ¸ö΢·Ö·½³Ì£¬µÈºÅÇ°ÃæÊÇC(2)¶ÔtµÄ΢·Ö dC3dt =k(2)*exp(-Ea2/(R*Ttime))*C(2)-k(3)*exp(-Ea3/(R*Ttime))*C(3);%µÚÈý¸ö΢·Ö·½³Ì£¬µÈºÅÇ°ÃæÊÇC(3)¶ÔtµÄ΢·Ö dC4dt =k(3)*exp(-Ea3/(R*Ttime))*C(3)-k(4)*exp(-Ea4/(R*Ttime))*C(4);%µÚËĸö΢·Ö·½³Ì£¬µÈºÅÇ°ÃæÊÇC(4)¶ÔtµÄ΢·Ö dCdt = [dC1dt; dC2dt;dC3dt;dC4dt];%΢·Ö·½³Ì×é |
3Â¥2014-09-19 13:17:46
birdcanfly
½ð³æ (ÕýʽдÊÖ)
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- ×¢²á: 2007-06-11
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- רҵ: ÉúÎïÒ½Óø߷Ö×Ó²ÄÁÏ
|
½«²ÎÊýµÄ³õʼֵÉ趨ΪÎÄÏ×Öб¨µÀµÄÊýÖµ£¬±¨´íÈçÏ£º Local minimum possible. lsqnonlin stopped because the size of the current step is less than the default value of the step size tolerance. <stopping criteria details> Warning: Matrix is singular to working precision. > In nlparci at 104 In ODEParmafit_non_test at 33 |
4Â¥2014-09-19 13:22:20
whqs8426212
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- רҵ: ÊýÂÛ
5Â¥2014-09-20 18:18:39
birdcanfly
½ð³æ (ÕýʽдÊÖ)
- Ó¦Öú: 8 (Ó×¶ùÔ°)
- ½ð±Ò: 735.7
- É¢½ð: 406
- ºì»¨: 3
- Ìû×Ó: 320
- ÔÚÏß: 105.9Сʱ
- ³æºÅ: 399057
- ×¢²á: 2007-06-11
- ÐÔ±ð: GG
- רҵ: ÉúÎïÒ½Óø߷Ö×Ó²ÄÁÏ
6Â¥2014-09-23 18:08:55













(max(tspan)-min(tspan))/100):max(tspan);
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