用matl新编绘制汽车的行驶加速度曲线.pdf

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1、用用 mma at tl l 新新编编绘绘制制汽汽车车的的行行驶驶加加速速度度曲曲线线文件编码（GHTU-UITID-GGBKT-POIU-WUUI-8968）用matlab绘制汽车的行驶加速度曲线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;m=3880;g=9.8;nmin=600;nmax=4000;G=m*g;ig=5.56 2.769 1.644 1.00 0.793;nT=0.85;r=0.367;f=0.013;CDA=2.77;i0=5

2、.83;L=3.2;a=1.947;hg=0.9;If=0.218;Iw1=1.798;Iw2=3.598;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;Fw1=CDA*ua1.2/21.15;Fw2=CD

3、A*ua2.2/21.15;Fw3=CDA*ua3.2/21.15;Fw4=CDA*ua4.2/21.15;Fw5=CDA*ua5.2/21.15;Ff=G*f;deta1=1+(Iw1+Iw2)/(m*r2)+(If*ig(1)2*i02*nT)/(m*r2);deta2=1+(Iw1+Iw2)/(m*r2)+(If*ig(2)2*i02*nT)/(m*r2);deta3=1+(Iw1+Iw2)/(m*r2)+(If*ig(3)2*i02*nT)/(m*r2);deta4=1+(Iw1+Iw2)/(m*r2)+(If*ig(4)2*i02*nT)/(m*r2);deta5=1+(Iw1+Iw

4、2)/(m*r2)+(If*ig(5)2*i02*nT)/(m*r2);a1=(Ft1-Ff-Fw1)/(deta1*m);a2=(Ft2-Ff-Fw2)/(deta2*m);a3=(Ft3-Ff-Fw3)/(deta3*m);a4=(Ft4-Ff-Fw4)/(deta4*m);a5=(Ft5-Ff-Fw5)/(deta5*m);plot(ua1,a1,ua2,a2,ua3,a3,ua4,a4,ua5,a5);title(汽车的行驶加速度曲线);xlabel(ua/(km*h-1);ylabel(a/m*s-2?);gtext(?),gtext(),gtext(),gtext(?),gtext(?);