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[交流] 关于优化工具中约束条件的表达

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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:5 ^; C3 m) ]8 k" W3 H
约束条件是在上面的Table里面直接输入最大最小值吧。0 o0 X2 d$ e! p8 X; ^1 _% `; u
Minimum 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).
6 t! W( |& q& J* s" ]8 G  k9 z. a& b5 v2 l# D. [: e8 i9 w6 X
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).
# l3 o! M! ^! e6 E下面的Equation栏里面应该写入目标函数吧。
7 E6 N  ~* Y9 IMaxProfit (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
, F4 G& k- `9 _7 L* u不等式都是在条件里面如' d( X3 [; [5 u- b$ l1 V3 D
if (DelTankSize >= 6000 && DeliveryTimes < 60)
" ]. N1 d: N; m  a$ ~. n! nReject = 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。
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