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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:; e, e# K9 \  H; c2 |8 ^
约束条件是在上面的Table里面直接输入最大最小值吧。' M7 r) ^" e$ I8 Y( J% _
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).3 g( A( }1 Q+ M  o( W4 d

9 B0 C/ q4 ]# GMaximum 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).
& p% u, G1 P% u下面的Equation栏里面应该写入目标函数吧。
9 K) [% _& G# GMaxProfit (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
$ Z% H& v5 Y7 M7 s% i7 R4 C# }不等式都是在条件里面如
1 A* v! X0 x) ~if (DelTankSize >= 6000 && DeliveryTimes < 60), {: k* f* F% ]2 x" }3 q5 [
Reject = 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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