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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:
' i" F. ^1 Y& t' M, n约束条件是在上面的Table里面直接输入最大最小值吧。+ E- H! g$ h: `1 c# {% \. T5 w. l
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).
+ h% R0 J/ w& D- t7 @$ p9 V
: l: R6 x, I% X# v- n& aMaximum 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).
/ B$ S: h4 v0 A! q' R4 i: ]下面的Equation栏里面应该写入目标函数吧。
( ]" t, k$ N7 d: N% H: j+ U: `& 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
2 w) S, d" X; h0 r0 j( R不等式都是在条件里面如
3 F6 h: B( D  Z, C* A2 \if (DelTankSize >= 6000 && DeliveryTimes < 60)
$ T- E! j9 {: s8 Y" Q6 c; tReject = 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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