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I(1) * (2 * 0.875+ R(1)) - I(2) * R(1) - 36=0 I(2) *(2 * 0.875 + R(1) + R(2))- I(1) * R(1)=0 %µÆ¾ß¹¦Âʱí´ïʽ I(2)^2 * R (2) - Power=0 (I(2) - I(1))^2 * R(1) - Power=0

%¶¨ÒåÒÅ´«Ëã·¨²ÎÊý NIND=50; %¸öÌåÊýÄ¿(Numbe of individuals) MAXGEN=1000; %×î´óÒÅ´«´úÊý(Maximum number of generations) NVAR=4; %±äÁ¿µÄάÊý PRECI=10; %±äÁ¿µÄ¶þ½øÖÆλÊý(Precision of variables) GGAP=0.9; %´ú¹µ(Generation gap) % lbi1=0; %i1È¡Öµ·¶Î§[0.138,0.25] % lbi2=0; %i2È¡Öµ·¶Î§[0.138,0.25] % lbr1=80; %r1È¡Öµ·¶Î§[80,259.2] % lbr2=80; %r2È¡Öµ·¶Î§[80,259.2] % ubi1=10; % ubi2=10; % ubr1=259.2; % ubr2=259.2; lbi1=0; %i1È¡Öµ·¶Î§[0.138,0.25] lbi2=0; %i2È¡Öµ·¶Î§[0.138,0.25] lbr1=50; %r1È¡Öµ·¶Î§[80,259.2] lbr2=50; %r2È¡Öµ·¶Î§[80,259.2] ubi1=10; ubi2 =10; ubr1=300; ubr2=300; trace=zeros(MAXGEN, 2); %½¨Á¢ÇøÓòÃèÊöÆ÷(Build field descriptor) FieldD=[rep([PRECI],[1,NVAR]);lbi1 lbi2 lbr1 lbr2;ubi1 ubi2 ubr1 ubr2;rep([1;0;1;1],[1,NVAR])]; %FieldD Chrom=crtbp(NIND, NVAR*PRECI); %´´½¨³õʼÖÖȺ %Chrom gen=0; %´ú¼ÆÊýÆ÷ X=bs2rv(Chrom,FieldD);%ÖÖȺ¶þ½øÖƵ½Ê®½øÖÆת»» %X % % X*X % X.^2 ObjV=ff(X); %Ä¿±êº¯Êý % ObjV while gen<MAXGEN %µü´ú FitnV=ranking(ObjV);%·ÖÅäÊÊÓ¦¶ÈÖµ(Assign fitness values) %FitnV SelCh=select('sus', Chrom, FitnV, GGAP); %Ñ¡Ôñ %SelCh SelCh=recombin('xovsp', SelCh, 0.7); %ÖØ×é %SelCh SelCh=mut(SelCh); %±äÒì %SelCh X=bs2rv(SelCh,FieldD); %ÖÖȺ¶þ½øÖƵ½Ê®½øÖÆת»» %X ObjVSel=ff(X); %Ä¿±êº¯Êý [Chrom ObjV]=reins(Chrom, SelCh, 1, 1, ObjV, ObjVSel); %ÖزåÈë %X=bs2rv(Chrom,FieldD); gen=gen+1; %´ú¼ÆÊýÆ÷Ôö¼Ó trace(gen, 1)=min(ObjV); %ÒÅ´«Ëã·¨ÐÔÄܸú×Ù trace(gen, 2)=sum(ObjV)/length(ObjV); end plot(trace(:,1));hold on; plot(trace(:,2),'-.');grid; legend(' ÖÖȺ¾ùÖµµÄ±ä»¯','½âµÄ±ä»¯') %Êä³ö×îÓŽ⼰Æä¶ÔÓ¦µÄ20¸ö×Ô±äÁ¿µÄÊ®½øÖÆÖµ,YΪ×îÓŽâ,IΪÖÖȺµÄÐòºÅ [Y, I]=min(ObjV); Y X=bs2rv(Chrom, FieldD); X(I,:)

function [ y ] = ff(x) f1=2*x(:,1)*0.875+(x(:,1)-x(:,2)).*x(:,3)-36; f2=2*x(:,2)*0.875+(x(:,2)-x(:,1)).*x(:,3)+x(:,2).*x(:,4); f3=5-(x(:,1)-x(:,2)).*(x(:,1)-x(:,2)).*x(:,3); f4=5-x(:,2).*x(:,2).*x(:,4); % f1(1,1)^2+f2(1,1)^2+f3(1,1)^2+f4(1,1)^2 y=f1.^2+f2.^2+f3.^2+f4.^2; end

1Â¥: Originally posted by Honey155752 at 2017-07-10 16:06:39
1.½â¾öÄ¿±ê£º·½³Ì×éÈçÏÂ
I(1) * (2 * 0.875+ R(1)) - I(2) * R(1) - 36=0 I(2) *(2 * 0.875 + R(1) + R(2))- I(1) * R(1)=0 %µÆ¾ß¹¦Âʱí´ïʽ I(2)^2 * R (2) - Power=0 (I(2) - I(1))^2 * R(1) - Power=0

2.¾­¹ý ...