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x=0.6:0.001:7;
G=235000;
k=222186.2;
f=0.1;
fkp=(0.999*k*G+0.1094*f*k*G)./(0.1094*k+G*x)-G*f;
plot(x,fkp,'-b*')
hold on
title('ÐÐ×ßϵͳǣÒýÁ¦ÀíÂÛÌØÐÔÇúÏß')
xlabel('DZ¿××ê»úÐÐ×ßËÙ¶È(km/h)')
ylabel('Ç£ÒýÁ¦£¨N)')
grid on



v=0.6:0.001:7;
delta_p=[8000000 15000000 25000000 35000000];
Cs=0.8e-9;
Csm=2.0e-9;
u=0.051;
n=2200;
Cv=0.2e+6;
Cvm=0.6e+6;
Cf=0.01;
Cfm=0.015;
Tc=5;
Vmax=45e-6;
nc=0.9;
rd=0.3223;
for i=1:1:length(delta_p)
for j=1:1:length(v)
    npv(i,j)=1-(1.07882*Cs)*(60*delta_p(i))/((u*n)*v(j));
    npt(i,j)=1/(1+(Cv*(u*n)/(60*delta_p(i)+Cf+(2*3.141592*Tc)/(delta_p(i)*Vmax))*(1.07882/v(j))));
    np(i,j)=npv(i,j)*npt(i,j);
    nmv(i,j)=1/(1+(Csm*delta_p(i))/(u*(v(j)/(0.377*rd*0.95))));
    nmt(i,j)=1-Cfm-(Cvm*(u*(v(j)/(0.377*rd*0.95))/delta_p(i)));
    nm(i,j)=nmv(i,j)*nmt(i,j);
    n1(i,j)=np(i,j)*nm(i,j)*nc;
end
end
figure(1)
plot(v,n1(1,,'-b')
hold on
plot(v,n1(2,,':r')
plot(v,n1(3,,'-.b')
plot(v,n1(4,,'--k')
title('±Ã¡ªÂí´ïϵͳµÄÀíÂÛЧÂÊ·ÖÎö')
xlabel('DZ¿××ê»úÐÐ×ßËÙ¶È(km/h)')
ylabel('×ÜЧÂÊ')
legend('8MPa','15MPa','25MPa','35MPa')
grid on
hold off

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[ Last edited by xwz118 on 2009-4-1 at 13:16 ]
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xwz118(½ð±Ò+1,VIP+0):лл£¬×îºÃÔÙÈ«Ãæµã 4-1 13:15
xwz118(½ð±Ò+2,VIP+0):лл 4-1 19:38
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vv=[v;v;v;v];
plotyy(x,fkp,vv',n1')

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