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2Â¥: Originally posted by dingd at 2014-06-20 14:13:29
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Warning: Infinite or Not-a-Number function value encountered.
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function F = myfun2(x)
syms p theta theta1 q g alfa;
s0=0.055;       %%ÒÑÖª²ÎÊý1£¬0.055
r=0.04;         %%ÒÑÖª²ÎÊý2£¬0.04
theta1=x(1);    %%´ýÇóÁ¿1³õÖµ£¬³õÖµ·¶Î§0<theta1<1.57
alfa=x(2);      %%´ýÇóÁ¿2¸³³õÖµ£¬³õÖµ·¶Î§0<alfa<1.57
p=x(3);         %%´ýÇóÁ¿3¸³³õÖµ£¬³õÖµ·¶Î§-10<p<10
q=x(4);         %%´ýÇóÁ¿4¸³³õÖµ£¬³õÖµ·¶Î§-10<q<10
c=1000;         %%³£Êý

g=-p*cos(alfa)-q*sin(alfa); %¼ÆËãÖмä±äÁ¿g
fun_cal1=@(aaa)1./sqrt(abs(2*(p*cos(aaa)+q*sin(aaa)+g)/c)); %»ý·Öº¯Êý1
fun_cal2=@(bbb)cos(bbb)./sqrt(abs(2*(p*cos(bbb)+q*sin(bbb)+g)/c)); %»ý·Öº¯Êý2
fun_cal3=@(ccc)sin(ccc)./sqrt(abs(2*(p*cos(ccc)+q*sin(ccc)+g)/c)); %»ý·Öº¯Êý3

%%´ýÇó·½³Ì×éÈçÏ£º£¨4¸ö·½³Ì£¬ÏëÇó4¸ö±äÁ¿theta1,alfa,p,q£©
F = [s0-theta1*r-quad(fun_cal1,theta1,alfa)+quad(fun_cal1,alfa,pi/2);
    r*(1-sin(theta1))-quad(fun_cal2,theta1,alfa)+quad(fun_cal2,alfa,pi/2);
    r*cos(theta1)-quad(fun_cal3,theta1,alfa)+quad(fun_cal3,alfa,pi/2);
    r-1/sqrt(abs(2*(p*cos(theta1)+q*sin(theta1)+g)/c))];

% options=optimset('Display','iter');
% fsolve(@myfun2,[0.4,1.2,1.2,1.3]) %%³õÖµ
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4Â¥2014-06-20 16:48:40
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3Â¥: Originally posted by arising2010 at 2014-06-20 15:49:57
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