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查看完整版本 : [MATLAB毕业设计] 求助离合器优化设计 帮我看看问题出在那里了


zllicorice
2010-06-11, 23:43
目标函数:function f=wwyal(F)
U=6*H*(R-r)*(R1-r1);V=3*(R-r)*(R-r);W=2*(R1-r1)*(R1-r1)*(H*H+h*h);
x1=(U-((U^2-4*V*W)^0.5))/(2*V);
x2=(U+((U^2-4*V*W)^0.5))/(2*V);
E=210000;b=0.3;
F(x1)=(pi*E*h*x1/(6*(1-b*b))).*log(R/r)/((R1-r1)*(R1-r1)).*((H-(x1*(R-r)/(R1-r1))).*(H-(x1/2)*(R-r)/(R1-r1))+h*h);
F(x2)=(pi*E*h*x2/(6*(1-b*b))).*log(R/r)/((R1-r1)*(R1-r1)).*((H-(x2*(R-r)/(R1-r1))).*(H-(x2/2)*(R-r)/(R1-r1))+h*h);
f=((F(x1)-F(x2))^2)^0.5;
初值[4.3 2.6 107 80 103 85 2.7]
非线性约束function[c,ceq]=confun()
c=[x1*(R-r)-0.95*H*(R1-r1);-x1*(R-r)+0.8*H*(R1-r1)];
ceq=[];
线性约束不等式 矩阵A=[1,-2,0,0,0,0,0;-1,1.5,0,0,0,0,0;-1,0,0.158,-0.158,0,0,0;1,0,-0.268,0.268,0,0,0;0,0,-1,1.2,0,0,0;0,0,1,-1.35,0,0,0;0,0,-1,35,0,0,0;0,0,1,-50,0,0,0;0,0,1,0,-1,0,0;0,0,-1,0,1,0,0;0,0,0,-1,0,1,0;0,0,0,1,0,-1,0]
b=[0;0;0;0;0;0;0;0;7;-2;6;-1]
用优化工具箱提示错误 H没定义 是怎么回事

anbcjys
2010-06-12, 09:04
h等变量没有付值 。

fanxing39
2010-06-18, 19:41
复杂的优化问题还是用了 lingo 软件 或者excel 去求解更好,matlab不是很擅长