下面的是优化的几个程序。。希望能有朋友能够帮忙找出bug!!!非常感谢
e-mail:jms_pursuit@163.com
%%%优化主程序%%%
%%%%%%%%%%%%%%%%
clear
clc
x0=[84000,84000,480000,84000,84000,480000,105000,302000,260000];
lb=[30000,100000,100000,30000,100000,100000,100000,100000,100000];
ub=[100000,400000,400000,100000,400000,400000,400000,400000,400000];
option=optimset('Algorithm','interior-point','MaxFunEvals',20000,'MaxIter',2000);
% option.MaxFunEvals=50000;
% option.MaxIter=2000;
[x,fval,exitflag,output]=fmincon(@opt_jieou_myfun,x0,[],[],[],[],...
lb,ub,@opt_jieou_mycon,option)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%目标函数%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function PX=opt_jieou_myfun(x)
%各刚度轴与主轴角度
kp1=x(1);
kq1=x(2);
kr1=x(3);
kp2=x(4);
kq2=x(5);
kr2=x(6);
kp3=x(7);
kq3=x(8);
kr3=x(9);
theta_p1=0;phi_p1=pi/2;sigma_p1=pi/2;
theta_q1=pi/2;phi_q1=40/180*pi;sigma_q1=130/180*pi;
theta_r1=pi/2;phi_r1=50/180*pi;sigma_r1=40/180*pi;
theta_p2=pi;phi_p2=pi/2;sigma_p2=pi/2;
theta_q2=pi/2;phi_q2=140/180*pi;sigma_q2=130/180*pi;
theta_r2=pi/2;phi_r2=130/180*pi;sigma_r2=40/180*pi;
theta_p3=0;phi_p3=pi/2;sigma_p3=pi/2;
theta_q3=pi/2;phi_q3=0;sigma_q3=pi/2;
theta_r3=pi/2;phi_r3=pi/2;sigma_r3=0;
%三个刚度值大小
% kp1=84000;kq1=84000;kr1=480000;
% kp2=84000;kq2=84000;kr2=480000;
% kp3=105000;kq3=302000;kr3=260000;
%悬置弹性中心坐标(悬置在整车坐标系中的坐标)
A1=-145.729e-3;B1=-247.71e-3;C1=-63.569e-3;
A2=-145e-3;B2=252.29e-3;C2=-63.569e-3;
A3=686.271e-3;B3=2.29e-3;C3=-251.569e-3;
%质量阵[M]
m0=[226.27,226.27,226.27];
m=diag(m0);
I0=[8.21 1.265 4.496;...
1.265 22.038 -3.804;...
4.496 -3.804 20.183];
X=zeros(3);
M=[m X;X I0];
%%构造获得刚度矩阵[K]
F1=[1 0 0 0 C1 -B1;0 1 0 -C1 0 A1;0 0 1 B1 -A1 0];
F2=[1 0 0 0 C2 -B2;0 1 0 -C2 0 A2;0 0 1 B2 -A2 0];
F3=[1 0 0 0 C3 -B3;0 1 0 -C3 0 A3;0 0 1 B3 -A3 0];
D1=[kp1,kq1,kr1];
D2=[kp2,kq2,kr2];
D3=[kp3,kq3,kr3];
K1=diag(D1);
K2=diag(D2);
K3=diag(D3);
%%%悬置各个刚度方向与总成坐标系夹角余弦
T1=[cos(theta_p1) cos(phi_p1) cos(sigma_p1);cos(theta_q1) cos(phi_q1) cos(sigma_q1);...
cos(theta_r1) cos(phi_r1) cos(sigma_r1)];
T2=[cos(theta_p2) cos(phi_p2) cos(sigma_p2);cos(theta_q2) cos(phi_q2) cos(sigma_q2);...
cos(theta_r2) cos(phi_r2) cos(sigma_r2)];
T3=[cos(theta_p3) cos(phi_p3) cos(sigma_p3);cos(theta_q3) cos(phi_q3) cos(sigma_q3);...
cos(theta_r3) cos(phi_r3) cos(sigma_r3)];
K=F1'*T1'*K1*T1*F1+F2'*T2'*K2*T2*F2+F3'*T3'*K3*T3*F3;
%%计算固有频率
A=inv(M)*K;
[v,d]=eig(A);
w=sqrt(d);
f=w/(2*pi);
Energy=zeros(6);
F=zeros(6);
for i=1:6 %计算能量在各自由度方向的分布
for l=1:6
for k=1:6
Energy(l,k)=v(k,i)*v(l,i)*M(k,l);
end
end
T=sum(Energy);% 在i阶时候,获得的6x6矩阵每列的和,即为1x6阶矩阵
TT=sum(T);% 对应i阶时候1x6矩阵的总和
P=T/TT;% 第i阶时候各方向的能量占比
F(:,i)=P;% 整行赋值给矩阵F第i列
end
F=F*100;
PX=-(1.3*max(F(:,1)))-(3*max(F(:,2)))-(1.5*max(F(:,3)))-(2*max(F(:,4)))-...
(3*max(F(:,5)))-(0.5*max(F(:,6)));
%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%约束方程,通过频率匹配%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function [c,ceq]=opt_jieou_mycon(x)
kp1=x(1);
kq1=x(2);
kr1=x(3);
kp2=x(4);
kq2=x(5);
kr2=x(6);
kp3=x(7);
kq3=x(8);
kr3=x(9);
theta_p1=0;phi_p1=pi/2;sigma_p1=pi/2;
theta_q1=pi/2;phi_q1=40/180*pi;sigma_q1=130/180*pi;
theta_r1=pi/2;phi_r1=50/180*pi;sigma_r1=40/180*pi;
theta_p2=pi;phi_p2=pi/2;sigma_p2=pi/2;
theta_q2=pi/2;phi_q2=140/180*pi;sigma_q2=130/180*pi;
theta_r2=pi/2;phi_r2=130/180*pi;sigma_r2=40/180*pi;
theta_p3=0;phi_p3=pi/2;sigma_p3=pi/2;
theta_q3=pi/2;phi_q3=0;sigma_q3=pi/2;
theta_r3=pi/2;phi_r3=pi/2;sigma_r3=0;
%三个刚度值大小
% kp1=84000;kq1=84000;kr1=480000;
% kp2=84000;kq2=84000;kr2=480000;
% kp3=105000;kq3=302000;kr3=260000;
%悬置弹性中心坐标(悬置在整车坐标系中的坐标)
A1=-145.729e-3;B1=-247.71e-3;C1=-63.569e-3;
A2=-145e-3;B2=252.29e-3;C2=-63.569e-3;
A3=686.271e-3;B3=2.29e-3;C3=-251.569e-3;
%质量阵[M]
m0=[226.27,226.27,226.27];
m=diag(m0);
I0=[8.21 1.265 4.496;...
1.265 22.038 -3.804;...
4.496 -3.804 20.183];
X=zeros(3);
M=[m X;X I0];
%%构造获得刚度矩阵[K]
F1=[1 0 0 0 C1 -B1;0 1 0 -C1 0 A1;0 0 1 B1 -A1 0];
F2=[1 0 0 0 C2 -B2;0 1 0 -C2 0 A2;0 0 1 B2 -A2 0];
F3=[1 0 0 0 C3 -B3;0 1 0 -C3 0 A3;0 0 1 B3 -A3 0];
D1=[kp1,kq1,kr1];
D2=[kp2,kq2,kr2];
D3=[kp3,kq3,kr3];
K1=diag(D1);
K2=diag(D2);
K3=diag(D3);
%%%悬置各个刚度方向与总成坐标系夹角余弦
T1=[cos(theta_p1) cos(phi_p1) cos(sigma_p1);cos(theta_q1) cos(phi_q1) cos(sigma_q1);...
cos(theta_r1) cos(phi_r1) cos(sigma_r1)];
T2=[cos(theta_p2) cos(phi_p2) cos(sigma_p2);cos(theta_q2) cos(phi_q2) cos(sigma_q2);...
cos(theta_r2) cos(phi_r2) cos(sigma_r2)];
T3=[cos(theta_p3) cos(phi_p3) cos(sigma_p3);cos(theta_q3) cos(phi_q3) cos(sigma_q3);...
cos(theta_r3) cos(phi_r3) cos(sigma_r3)];
K=F1'*T1'*K1*T1*F1+F2'*T2'*K2*T2*F2+F3'*T3'*K3*T3*F3;
%%计算固有频率
A=inv(M)*K;
[v,d]=eig(A);
w=sqrt(d);
f=w/(2*pi);
c(1)=f(1)-17.7;
c(2)=f(2)-17.7;
c(3)=f(3)-17.7;
c(4)=f(4)-17.7;
c(5)=f(5)-17.7;
c(6)=f(6)-17.7;
c(7)=5-f(1);
c(8)=5-f(2);
c(9)=5-f(3);
c(10)=5-f(4);
c(11)=5-f(5);
c(12)=5-f(6);
ceq=[];
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