用matlab绘制汽车驱动力-行驶阻力平衡图Word文档格式.docx
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G=m*g;
ig=[5.562.7691.6441.000.793];
nT=0.85;
r=0.367;
f=0.013;
CDA=2.77;
i0=5.83;
L=3.2;
a=1.947;
hg=0.9;
If=0.218;
Iw1=1.798;
Iw2=3.598;
n=600:
10:
4000;
Tq=-19.313+295.27*(n/1000)-165.44*(n/1000).^2+40.874*(n/1000).^3-3.8445*(n/1000).^4;
Ft1=Tq*ig
(1)*i0*nT/r;
Ft2=Tq*ig
(2)*i0*nT/r;
Ft3=Tq*ig(3)*i0*nT/r;
Ft4=Tq*ig(4)*i0*nT/r;
Ft5=Tq*ig(5)*i0*nT/r;
ua1=0.377*r*n/ig
(1)/i0;
ua2=0.377*r*n/ig
(2)/i0;
ua3=0.377*r*n/ig(3)/i0;
ua4=0.377*r*n/ig(4)/i0;
ua5=0.377*r*n/ig(5)/i0;
ua=0:
5:
120;
Ff=G*f;
Fw=CDA*ua.^2/21.15;
Fz=Ff+Fw;
plot(ua1,Ft1,ua2,Ft2,ua3,Ft3,ua4,Ft4,ua5,Ft5,ua,Fz);
title('
汽车驱动力-行驶阻力平衡图'
);
xlabel('
ua(km*h^-1)'
ylabel('
Ft/N'
gtext('
Ft1'
),gtext('
Ft2'
Ft3'
Ft4'
Ft5'
Ff+Fw'