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楼主 |
发表于 2007-7-21 21:07
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[quote]function dq=Rotors_System_Sub_Func(t,q)
global BN Nb1 Nb2 w1 w2 Ro1 Ri1 Ro2 Ri2
r01=0.00002;%m
r02=0.00005;%m
m1=7.86;%kg
m2=11.93;%kg
W1=m1*9.8;%N
W2=m2*9.8;%N
Kb1=1.4656e10;%N/m^1.5
Kb2=1.7518e10;%N/m^1.1
q
Fx11=0;
Fy11=0;
for i=1:Nb1
sita(i)=2*pi/Nb1*(i-1)+BN/Nb1*w1*2*pi*t;
Deformation(i,1)=q(1,1)*cos(sita(i))+q(2,1)*sin(sita(i))-r01
if Deformation(i)<=0
Deformation(i)=0;
end
fx11=Kb1*(Deformation(i))^1.5*cos(sita(i));
fy11=Kb1*(Deformation(i))^1.5*sin(sita(i));
Fx11=Fx11+fx11;
Fy11=Fy11+fy11;
end
Fx12=Fx11;
Fy12=Fy11;
Deformation
Fx21=0;
Fy21=0;
for j=1:Nb2
sita(j)=2*pi/Nb2*(j-1)+(Ro2/(Ro2+Ri2)*w1+Ri2/(Ro2+Ri2)*w2)*2*pi*t;
Deformation1(j,1)=q(3)*cos(sita(j))+q(4)*sin(sita(j))-r02;
if Deformation1(j)<=0
Deformation1(j)=0;
end
fx21=Kb2*(Deformation1(j))^1.5*cos(sita(j));
fy21=Kb2*(Deformation1(j))^1.5*sin(sita(j));
Fx21=Fx21+fx21;
Fy21=Fy21+fy21;
end
Fx22=0;
Fy22=0;
for k=1:Nb1
sita(k)=2*pi/Nb1*(k-1)+BN/Nb1*w2*2*pi*t;
Deformation2(k,1)=q(3,1)*cos(sita(i))+q(4,1)*sin(sita(i))-r01;
if Deformation2(k)<=0
Deformation2(k)=0;
end
fx22=Kb1*(Deformation2(k))^1.1*cos(sita(k));
fy22=Kb1*(Deformation2(k))^1.1*sin(sita(k));
Fx22=Fx22+fx22;
Fy22=Fy22+fy22;
end
P=1470;
Cx11=1500;Cy11=1500;
Cx12=2500;Cy12=2500;
Cx21=2000;Cy21=2000;
Cx22=7000;Cy22=7000;
%dq(1:4,1)=q(5:8,1);
dq(5:8,1)=[-1/m1*((Cx11+Cx12)*q(5,1)+Fx11+Fx12-(W1+Fx21+Cx21*q(7,1)));...
-1/m1*((Cy11+Cy12)*q(6,1)+Fy11+Fy12-(Fy21+Cy21*q(8,1)));...
-1/m2*((Cx21+Cx22)*q(7,1)+Fx21+Fx22-(P+W2));...
-1/m2*((Cy21+Cy22)*q(8,1)+Fy21+Fy22)];
dq(1:4,1)=q(5:8,1);
主程序:function Rotors_System_Func
clear
clc
global BN Nb1 Nb2 w1 w2 Ro1 Ri1 Ro2 Ri2
n_one_T=200;
n_T=200;
%e217QT(85*15*28)
Ro1=4.8828e-2;
Ri1=6.8672e-2;
Nb1=10;
%6D2272822(110*140*19)
Ro2=66.515e-3;
Ri2=58.5e-3;
Nb2=34;
n_n=0;
w2_min=100;
w2_max=300;
w2_step=100;
w1_rpm=11000;
q_initial(1:8,1)=1e-11;
BN=Ri1/(Ri1+Ro1)*Nb1;
tic
%w2_rpm=100;
for w2_rpm=w2_min:w2_step:w2_max
n_n=n_n+1
w2=w2_rpm/60;
w1=w1_rpm/60;
r=Ro2/(Ro2+Ri2);
w_cage=w1*r+w2*(1-r);
w_vc=w_cage*Nb2;
T_vc=2*pi/w_vc;
dt=T_vc/n_one_T;
time=n_T*T_vc;
n=round(time/dt);
t_span(1:n)=linspace(0,time,n);
options=odeset('RelTol',1e-6);
[t,q]=ode45('Rotors_System_Sub_Func',t_span,q_initial,options);
end
toc
%wc=[wc,w_rpm];
%subplot(2,1,1);plot(w2_rpm,q(:,1),'k.')
%subplot(2,1,2);
%subplot(2,2,1);plot(q(98000:100:100000,1),q(98000:100:100000,2),'k.','markersize',1)
%subplot(2,2,2);plot(q(98000:100:100000,3),q(98000:100:100000,4),'k.','markersize',1)
%subplot(2,2,3);plot(w2_rpm,q(98000:100:100000,3),'k.','markersize',1)
%subplot(2,2,4);plot(w2_rpm,q(98000:100:100000,7),'k.','markersize',1)
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