• 大小: 2KB
    文件类型: .rar
    金币: 1
    下载: 0 次
    发布日期: 2021-03-22
  • 语言: Matlab
  • 标签: MATLAB  路径  时间窗  

资源简介

求解带时间窗的车辆路径问题的程序

资源截图

代码片段和文件信息

function []=antvrptw()
clc
clear
tic%????
city_coordinate=[33042312;36391315;41772244;37121399;34881535;33261556;32381229;41961044;4312790;4386170;
                 30071970;25621756;27881491;23811676;1332695;37151678;39182179;40612370;37802212;36762578;
                 30291838;42632931;34291908;35072376;33942643;34393201;29353240;31403550;25452357;27782826;23702975];%??31???           
carge=[0904060707040204070604040402080503050505050607050404060705030];%???????
tw=[0290240260270270240220240270260240340340320380350230250250350350260270250340240260270250230];%时间窗限制
sw=[0904060707040204070604040402080503050505050607050404060705030];%服务时间

m=30;Alpha=3;Beta=2;gama=2;Rho=0.2;NC_max=30;Q=10;W=200;qq=0.1;load_w=0;s=0;%??????
C=city_coordinate;
demands=carge;
windowtime=tw;
servicetime=sw;
vehicletime=0;

n=size(C1);%n????????????? 
D=zeros(nn);%D???????????? 
for i=1:n 
   for j=1:n 
     if i~=j 
         D(ij)=((C(i1)-C(j1))^2+(C(i2)-C(j2))^2)^0.5; 
     else 
        D(ij)=eps; 
     end 
    D(ji)=D(ij); 
   end 
end 
Eta=1./D;%Eta??????????????? 
Tau=ones(nn);%Tau?????? 
Tabu=zeros(mn+32);%?????????? 
NC=1;%????? 
G_best_route=[NC_maxn+32];%?????? 
G_best_length=inf.*ones(NC_max1);%????????? 
length_ave=zeros(NC_max1);%?????????

%%?????????DC?
while NC<=NC_max%??????????????? 
    Tabu(:1)=randint(m1[11]);
%%????m???????????????????? 
for i=1:m
    visited=Tabu(i:);
    visited=visited(visited>0);
    to_visit=setdiff(1:nvisited);
    c_temp=length(to_visit);
    j=1;
       while j<=n
          if ~isempty(to_visit)
   %% ?????????????????
    for k=1:length(to_visit)
          x(k)=(Tau(visited(end)to_visit(k))^Alpha)*(Eta(visited(end)to_visit(k))^Beta);%*(U(visited(end)to_visit(k))^gama);
    end   
         ww=rand;
    if ww         Select=find(max(x));
    else
        x=x/(sum(x)); 
       %???????????? 
       xcum=cumsum(x); 
      Select=find(xcum>=rand);
    end
    
    if isempty(Select)
       Select=1;
       load_w=load_w+demands(Select);%车辆装载量计算
       else
       load_w=load_w+demands(to_visit(Select(1)));%车辆装载量计算
       vehicletime=vehicletime+servicetime(to_visit(Select(1)));%服务时间计算
    end
     
                    
    %%%容量和时间判断   
    if load_w>W
          Select=1;
          j=j-1;
          load_w=0;%原来的程序
          vehicletime=0;%服务时间归零
          Tabu(ilength(visited)+1)=Select(1);
    else if  vehicletime>windowtime(to_visit(Select(1)))& visited(end)~=1 %%时间判断
            Tabu(i1:(length(visited)+1))=[visited1];
            j=j+1;
         else
         Tabu(ilength(visited)+1)=to_visit(Select(1)); 
        end
    end  
        
end
    visited=Tabu(i:);
    visited=visited(visited>0);
    to_visit=setdiff(1:nvisited);
    x=[];
    if visited(end)~=1
          Tabu(i1

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       4212  2014-05-30 17:03  antvrptw.m

----------- ---------  ---------- -----  ----

                 4212                    1


评论

共有 条评论