动态规划算法

【实例简介】
基于nedc工况的动态规划算法对汽车换档规律进行优化 代码可以在matlab中正常运行 价值非常高，不懂的可以留言学习
5/28/182: 45 PM C: Userscc\ Desktop\zui xin\ DP(1\ DP NEDC All Cycle.m 3 of 8 sfuel-griddata(engine RPM Axis, Ttg, Engine be Data, nee, tee, cubic)*1 S rr fucl(pp, hh)=sfucl for hh=1: length(S rr) for pp=1: 5 f S rr fuel(pp hh)==0 S rr fuel(pp, hh)=100000 d enc S rr f-zeros(length(s rr), 1) for hh=1: length(S rr y1, y2]=min(s rr fuel(, hh)) S rr f(hh)-y2 %这个是根据每段的最后一个数来选挡的,可能下一时刻够不着当前档位 %%大循环每个阶段 ne final-zeros(length(nedc), 1) te final=zeros(length (nedc), 1) gear final=zeros(length(nedc), 1) fuel final=zeros(length(nedc), 1) N-length (igt) f zeros(length(S 1), 1) for hh=1: length(s 1) n(h)Srr(h)-S1(hh)+1;%各阶段的个数; DP算法 for hh=l: length (s 1) Fuel=zeros(n, f n(hh)) 1:N if ii--S rr f(hh) Fuel(ii, f n(hh))=0.05 已⊥se Fuel(ii, f n(hh))=10900 end Gear con=[-10 11 Gear=zeros(n, f n(hh)) %存储控制量; for kk=(f n(hh)1):1:1 ice=30*nedc(kk-1+S 1( hh))*igt*io/(pi*Rw) tr cost 1=zeros(5, 1) for ii=1: 5 if N ice(ii)>5999 99999 N ice(ii)<6999999 5/28/182: 45 PM C: Userscc\ Desktop\zui xin\ DP(1\ DP NEDC All Cycle. m 4 of 8 tr cost 1(ii)=10007 clsc tr cost 1(ii)=0.0001 if tr cost1(1)=10007%找适合的挡位; for 11=1: 5 if tr cost 1(ii)>=9999. 99 X1=1i Fucl(ii, kk=tr cost 1(ii) Gear(ii, kk)=7 en x1=x1+1 x2=5 el seif tr cost I(1)==00001&&tr cost I(5)==00001 elseif tr cost 1(5)==10007 r11 if tr cost 1(ii)>=9999. 999 Fuel(ii, kk=tr cost l(iD) Gear(ii, kk=7 end end x1=1; x2x2-1 %这样的程序会报错,容易找错误 x1=0; Ne=30*nedc(kk-1+S 1(hh))*igt(x2)*i0/(pi*Rw) Te-Twheel(kk-1+s 1(hh))/(i0kigt(x2)) Temax-interpl(engine RPM Axis, engine Torque max, Ne, cubic') n-0; while te>emax 2=x2-1 Ne=30nedc(kk-1+S1(h))*1gt(x2)*10/(p*Rw); Te=Wheel(kk-1+S 1(hh))/(io*igt(x2)) Temax-interpl (engine RPM Axis, engine Torque max, Ne, cubic') nn=nn+I for ii=(x2+n):-1:(x2+1) Fuel (ii, kk)=20007 Gear(ii, kk)=777 en if Wheel(kk-1+S 1(hh))>=0.01 for ii %约束了转矩最大值 fuel=zeros(3, 1) 5/28/182: 45 PM C: Userscc\ Desktop\zui xin\ DP(1\ DP NEDC All Cycle.m 5 of 8 or if ii+Gcar con(jj)<l ii+Gcar con(jj)>5 fuel(jj)=Fuel(ii, kk+1)+10500 决策超届 e⊥se if 30*nedc(kk-1+S 1(hh))*igt(ii+Gear con(jj))*io/(pi*Rw)n engine(2)|130*nedc(kk-y 1+S 1(hh))*igt(ii+Gear con(jj)*i0/pi+Rw)n engine(1) for pp=l: 5 %上一行决策转速超界 if ii-Gear con (jj)>= fuel(jj)=Fuel(pp, kk+1)+105 brcak else %决策转矩超界??? ne=30*nedc(k-1+S1(h)米igt( ii+Gear con(jj))来i0/(pi米Rw) te=Wheel(kk-1+S 1(hh))/(iO*igt(iitGear can(jj))) tr cost=griddata(engine RPM Axis, Ttg, mf kn, ne, te, cubic)*l for pp 1: 5 if ii-Gear con(jj)>=pp&&ii+Gear con(ij)pp+ uel(ij)=Fuel(pp, kk+1)+tr cost break d end 「x22,x3]=min(fucl); Fuel(ii, kk=x22 Gear(ii, kk)=Gear con (x3) else 驱动力小于零,降挡还是不变; for ii=l: 5 Fuel(ii, kk)=Fuel(ii, kk+1) Gear(ii, kk)=Gear(ii, kk+1) d d if Gear(1, 1)=0 bug Gear(1,1)=0 end re gear-zeros(f n (hh), 1) re gear(1)=1 %状态量值 re G=zeros(f n(hh), 1) %决策量 Fuel re ne=zeros(f n(hh), 1) re te=zeros(f n(hh), 1) for ii=l: 5 if re gear(1)>=ii&&re gear(1)ii+ re G(1)=Gear (ii, 1) end 5/28/182: 45 PM C: Userscc\ Desktop\zui xin\ DP(1\ DP NEDC All Cycle.m 6 of 8 re nc(1)=30*ncdc(s 1(hh))*igt(rc gcar(1)+re G(1))*i0/(pi*Rw) re te(1)=Wheel(s 1(hh))/(i0*igt(re gear(1)+re G(1))) re Fuel(1)=0 for kk=2: f n(hh) kk re ne(kk)=30*nedc(kk-1+S 1(hh))*igt (re gear(kk-1)+re G(kk-1))*io/(pi*Rw) if Wheel(kk-1+S 1(hh))>0.001 rc tc(kk)-Twhccl(kk-1+S 1(hh))/(1o*igt(rc gcar(kk-1)+rc G(kk-1))) re fuel=griddata(engine RPM Axis, Tto, mf kn, re ne(kk), re te(kk),'cubic')*1 eI se % Thee1(k+801)<=0的时候 re te(kk)=re te(kk-1) re fuel=griddata(engine RPM Axis, Ttq, mf kn, re ne(kk), re te(kk), cubic)=1 end re Fuel (kk)=re Fuel(kk-1)+re fuel re gear(kk)- re gear(kk-1)+reG(k-1);%状态 for pp=1: 5 if igt (re gear(kk-1)+re G(kk-1))--igt (pp) 4 break end end for qq=1: 5 if x4>=go&&xqg+1 re G(kk)=Gear(pp, kk) %决策; break end d .c figure plot(engine RPM Axis, engine Torque max, r,' linewidth, 3) hold on for kk=1: f n(hh)-1 %e plot (re ne(kk),re te(kk), 'g*') oc hold on [c, h]-contour(engine RPM Axis, Ttg', Engine be Data, 0: 10: 600) %跟数据在be中写的方式有关,用到 转置 set(h, Show Text', on') % xlabe(发动机转速n/(r/min)', fontweight’,bold') % labe(发动机有效转矩Ttq/(N.m),’ fontweight',bold) % zlabel(燃油消耗率be/(g/(kw.h)',' fontweight',"bod);%%这个地方燃油消耗率和功率有关????不是 和扭矩?? % title(发动机万有特性三维图”); %o figure 5/28/182: 45 PM C: Userscc\ Desktop\zui xin\ DP(1\ DP NEDC All Cycle. m 7 of 8 mm=1: f n(hh) nedc 1=zeros(f n(hh), 1) for kk=1: f n(hh)-1 % nedc 1(kk)-nedc(kk-1+S 1(hh)) nedc 1(f n(hh))=nedc 1(f n(hh)-1) [ax, h1, h2]=plot yy(mm, nedc. 1, mm, re gear grid on: set(get(ax(1), 'Ylabel'), string, 4iv/m/s, color', 'black') %y1 %set(get(ax(2),' label’),' string',’档位',’ color'," black’) .Y2 % xlabel(时间t/s3) %se(ax(2), lick,[0:1:5] %%set(ax(1), stick,[0.3:0.05:0.8]); % legend([h1h2],车速v/m/s3,’档位’) %set(ex(:),’ Color','k')%设定两个Y轴的颜色为黑色 %set(hl,’ ninety1 color %set(h2,’ linestyle color', 'blue') % title(档位与工况对比曲线’); %%整个工况的挡位和工作点以及燃油消耗 for pp=S 1(hh): 1: S rr(hh) ne final(pp) =re ne(pp-s 1(hh)+D) te final(pp)=re te(pp-s 1( hh)+1) gear final(ppre gear(pp-S 1(hh)+1) fucl final(pp -re Fucl(pp-S 1(hh)+1) figure plot(nedc,r) hold on plot(gear final, b') Tigure for kk=1: 1180 if ne final(kk)=0 if gear final(kk)==l plot (ne final(kk), te final(kk),r', 'linewidth', 2) Seif gear final(kk)--2 plot(ne final(kk), te final(kk), g*',' linewidth, 2) elseif gear final(kk)== plot(ne final(kk), te final(kk),r,' linewidth, 2) elseif gear final(kk)==4 plot(ne final(kk), te final(kk),'g,' linewidth, 2) plot(ne final(kk, te final(kk), 'b+, linewidth', 2) 5/28/182: 45 PM C: Userscc\ Desktop\zui xin\ DP(1\ DP NEDC All Cycle. m 8 of 8 hold on Lc, h]=contour(engine RPM Axis, Ttg', Engine be Data, 0: 10: 600) %跟数据在be中写的方式有关,用到转置 xlabel(发动机转速n/(r/min)'," fontweight',bold) y lahe(发动机有效转短Ttq/(N.m)'," fontweight',bold') zael(燃油消耗率be/(g/(kw.h)', fontweight',’bold');%‰% title(发动机万有特性三维图) 【实例截图】
【核心代码】