【数学建模】基于matlab银行多机排队论模型【含Matlab源码 1096期】.zip

arrivetime=[cumsum(ones(300,1)),sort(randi([0,479],300,1))+rand(300,1)];%到达时间 servetime=[cumsum(ones(300,1)),abs(random('norm',5,3,300,1))];%服务时间 iii=sum(servetime(:,2)); start=cell(1,3);%服务开始时间 finish=cell(1,3); waittime=cell(1,3); L=cell(1,3);%队长 T=cell(1,3);%'number','arrivetime','waittime','start','servetime','finish','line' %首先排三个任务 t=randperm(3);%随即进行机器选择 for j=1:3 waittime{t(j)}(1,:)=[j,0]; start{t(j)}(1,:)=arrivetime(j,:); finish{t(j)}(1,:)=[j,start{t(j)}(2)+servetime(j,2)]; L{t(j)}(1,:)=[j,0]; T{t(j)}=[T{t(j)};[j,arrivetime(j,2),waittime{t(j)}(end,2),start{t(j)}(end,2),servetime(j,2),finish{t(j)}(end,2), L{t(j)}(end,2)]]; end for i=4:300 for j=1:3%求出3台机器的等待时间，取等待时间最小的机器 if arrivetime(T{j}(end,1),2)+servetime(T{j}(end,1),2)+waittime{j}(end,2)>arrivetime(i,2) time(j)=arrivetime(T{j}(end,1),2)+servetime(T{j}(end,1),2)+waittime{j}(end,2)-arrivetime(i,2); else time(j)=0; % start(i)=arrivetime(i); % finish(i)=start(i)+servetime(i); end end [a,b]=min(time);%a为最小等待时间，b为等待时间最小的机器 waittime{b}(end+1,:)=[i,a]; start{b}(end+1,:)=[i,arrivetime(i,2)+waittime{b}(end,2)]; finish{b}(end+1,:)=[i,start{b}(end,2)+servetime(i,2)]; for j=length(waittime{b}(:,1))-1:-1:1 if j==1 L{b}(end+1,:)=[i,length(waittime{b}(:,1))-j]; break; elseif arrivetime(i,2)>finish{b}(j,2) L{b}(end+1,:)=[i,length(waittime{b}(:,1))-j-1];break; end end T{b}=[T{b};[i,arrivetime(i,2),waittime{b}(end,2),start{b}(end,2),servetime(i,2),finish{b}(end,2), L{b}(end,2)]]; end for i=1:3 % T{i}=[] workload(i)=sum(T{i}(:,5)); wastetime(i)=finish{i}(end,2)-start{i}(1,2)-workload(i); meanwaittime(i)=mean(waittime{i}(:,2)); meanline(i)=mean(L{i}(:,2)); end for i=1:3 x=T{i}(:,2); y=T{i}(:,3); plot(x,y,'color',[rand rand rand]) % textlabel=['第',num2str(i),'服务台']; hold on,grid on end legend('第一服务台','第二服务台','第三服务台') xlabel('x 到达时间') ylabel('y 等待时间')