设为首页收藏本站

最大的系统仿真与系统优化公益交流社区

 找回密码
 注册

QQ登录

只需一步,快速开始

查看: 5018|回复: 2

[交流] 关于优化工具中约束条件的表达

[复制链接]
发表于 2009-5-21 16:44:46 | 显示全部楼层 |阅读模式
EXTEND中的优化工具中的约束条件如果是含有>=或者<=的数学式子,该如何表示?
发表于 2009-5-21 20:36:24 | 显示全部楼层
个人想法:
' B, O- r% k- Y2 r7 X/ t约束条件是在上面的Table里面直接输入最大最小值吧。
# a/ r* j6 j2 n9 u$ KMinimum Limit: Table Column 5: The minimum value that this variable can be set to by the Optimizer block. If it is entered without a decimal point, it can only assume integer values. Do not enter limits for variables that are used as results from the model (i.e. Exited from an Exit block).0 g' K0 |! e' s# J( K
/ z  J( p: E$ I" X1 I- J$ M9 F
Maximum Limit: Table Column 6: The maximum value that this variable can be set to by the Optimizer block. If it is entered without a decimal point, it can only assume integer values. Do not enter limits for variables that are used as results from the model (i.e. Exited from an Exit block).6 B/ ^9 O) b- E& O6 ]
下面的Equation栏里面应该写入目标函数吧。9 n" K5 w; }. H/ z
MaxProfit (MiniCost)= Var0 + Var1 + Var2;
发表于 2009-5-22 16:37:01 | 显示全部楼层
哦,搞错了,抱歉 * @  `6 L$ @. Z5 u5 O! C
不等式都是在条件里面如
; _( }+ ~5 W' }if (DelTankSize >= 6000 && DeliveryTimes < 60)
# g4 n$ S9 v. k* pReject = TRUE;  //  你的意思是这个地方是不等式的情况吗?手册里好像没有这样的说明。
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-8-13 12:24 , Processed in 0.018917 second(s), 14 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表