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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:
4 \+ n! j4 M5 ?约束条件是在上面的Table里面直接输入最大最小值吧。& A9 r- x5 Z4 z+ Z+ A
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).2 Z& r; `6 J9 ^, P. q
8 E, W$ _! L8 V( W; I& T$ X) Y
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).
; k2 _' ?3 |( `, ]" f7 c/ K: Y下面的Equation栏里面应该写入目标函数吧。- D1 w7 I$ k4 n
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
4 u3 z5 u8 w* n+ T, N6 L! i不等式都是在条件里面如2 L* I0 n0 j, k% S% d1 z1 w
if (DelTankSize >= 6000 && DeliveryTimes < 60)3 d! m; x: A5 }
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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