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function KineticsEst5 % ¶¯Á¦Ñ§ODE·½³ÌÄ£Ð͵IJÎÊý¹À¼Æ % % Author: HUANG Huajiang % Copyright 2003 UNILAB Research Center, % East China University of Science and Technology, Shanghai, PRC % $Revision: 1.0 $ $Date: 2003/06/06 $ % % [Ref]£ºFrerich Keil, et al. ed., Scientific computing in chemical % engineering II,1999 £¨P.351£© % % The variables y here are y(1)=x1, y(2)=x4, y(3)=x5,y(4)=x6 . clear all clc k0 = [0.5 0.5 0.5 0.5 0.5]; % ²ÎÊý³õÖµ lb = [0 0 0 0 0]; % ²ÎÊýÏÂÏÞ ub = [+inf +inf +inf +inf +inf]; % ²ÎÊýÉÏÏÞ x0 = [0.1883 0.2507 0.0467 0.0899 0.1804 0.1394 0.1046]; KineticsData1; yexp = ExpData(:,2:5); % yexp: ʵÑéÊý¾Ý[x1 x4 x5 x6] % ʹÓú¯Êýfmincon()½øÐвÎÊý¹À¼Æ [k,fval,flag] = fmincon(@ObjFunc4Fmincon,k0,[],[],[],[],lb,ub,[],[],x0,yexp); 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(' The sum of the squares is: %.1e\n\n',fval) k_fmincon = k; % ʹÓú¯Êýlsqnonlin()½øÐвÎÊý¹À¼Æ [k,resnorm,residual,exitflag,output,lambda,jacobian] = ... lsqnonlin(@ObjFunc4LNL,k0,lb,ub,[],x0,yexp); ci = nlparci(k,residual,jacobian); fprintf('\n\nʹÓú¯Êýlsqnonlin()¹À¼ÆµÃµ½µÄ²ÎÊýֵΪ:\n') Output % ÒÔº¯Êýfmincon()¹À¼ÆµÃµ½µÄ½á¹ûΪ³õÖµ£¬Ê¹Óú¯Êýlsqnonlin()½øÐвÎÊý¹À¼Æ k0 = k_fmincon; [k,resnorm,residual,exitflag,output,lambda,jacobian] = ... lsqnonlin(@ObjFunc4LNL,k0,lb,ub,[],x0,yexp); ci = nlparci(k,residual,jacobian); fprintf('\n\nÒÔfmincon()µÄ½á¹ûΪ³õÖµ£¬Ê¹Óú¯Êýlsqnonlin()¹À¼ÆµÃµ½µÄ²ÎÊýֵΪ:\n') Output % ------------------------------------------------------------------ function f = ObjFunc4Fmincon(k,x0,yexp) tspan = [0.00 : 0.01 : 0.20]; [t x] = ode45(@KineticEqs,tspan,x0,[],k); y(:,1) = x(:,1); y(:,2:4) = x(:,4:6); f = sum((y(:,1)-yexp(:,1)).^2) + sum((y(:,2)-yexp(:,2)).^2) ... + sum((y(:,3)-yexp(:,3)).^2) + sum((y(:,4)-yexp(:,4)).^2); % ------------------------------------------------------------------ function f = ObjFunc4LNL(k,x0,yexp) tspan = [0.00 : 0.01 : 0.20]; [t x] = ode45(@KineticEqs,tspan,x0,[],k); y(:,1) = x(:,1); y(:,2:4) = x(:,4:6); f1 = y(:,1) - yexp(:,1); f2 = y(:,2) - yexp(:,2); f3 = y(:,3) - yexp(:,3); f4 = y(:,4) - yexp(:,4); f = [f1; f2; f3; f4]; % ------------------------------------------------------------------ function dxdt = KineticEqs(t,x,k) q = 8.75 + k(5); dxdt = ... [ ( k(5)-q*x(1)- k(1)*x(1)*x(2)-k(4)*x(1)*x(6)*sqrt(0.9) ) ( 7.0-q*x(2) - k(1)*x(1)*x(2)-2*k(2)*x(2)*x(3) ) ( 1.75 -q*x(3) - k(2)*x(2)*x(3) ) ( -q*x(4) + 2*k(1)*x(1)*x(2)-k(3)*x(4)*x(5) ) ( -q*x(5) + 3*k(2)*x(2)*x(3)-k(3)*x(4)*x(5) ) ( -q*x(6) + 2*k(3)*x(4)*x(5)-k(4)*x(1)*x(6)*sqrt(0.9) ) ( -q*x(7) + 2*k(4)*x(1)*x(6)*sqrt(0.9) ) ]; |
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