我的M文件如下： f.)z_RyGd
function [G5]=fun(x); <$z6:4uN_
syms n1 n2 k1 k2 d; yM}~]aQ y
[subwave,nsub]=textread('subout.txt','%f %f'); R5Pk>-KF
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); ty ESDp%
[p,q]=size(subwave); {&dbxj-'
for j=1:p; = -bGH
wavel(j)=subwave(j,1); $|"Y|3&X
n(j)=n1+n2/((wavel(j))^2); d?ru8
k(j)=k1*exp(k2/wavel(j)); ml,FBBGq|-
N(j)=n(j)-i*k(j); $Z|HFV{
phase(j)=2*pi*N(j)*d/wavel(j); /aTW X
ns(j)=nsub(j,1); JkShtLEr
B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); Nwwn #+
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); MpK3 +4UMa
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); ~ECI L7,
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; 8NnGN( a*D
t1(j)=ts(j)*T(j); O:E0htdWr
tf(j)=filmtran(j,1)/100; {' 8td^JEE
difference(j)=(t1(j)-tf(j))^2; |E?PQ?P
end X Q3"+M_KG
G=symsum(difference(j),1,401); t]IHQ8
G1=subs(G,n1,sym('x(1)')); Y5{KtW
G2=subs(G1,n2,sym('x(2)')); vmzc0J+3p
G3=subs(G2,k1,sym('x(3)')); %<)!]8}P*
G4=subs(G3,k2,sym('x(4)')); m>{ a<N
G5=subs(G4,d,sym('x(5)')); VQ"Z3L3-4
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在matlab下运行 yJK:4af;.
>> options=optimset('tolfun',1e-8,'tolx',1e-8); T09 5]*Hm
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); gc\/A\F<
,&~-Sq) ~
f\;w(_
结果出错如下： Wsb>3J
=,b6yV+$D
??? Conversion to double from sym is not possible. 1oc@]0n
Error in ==> fminsearch at 175 4Ei8G]O
$_
fv(:,1) = funfcn(x,varargin{:}); 8NkyT_\
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哪位高手给看看 !,+<?o y
