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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:0 o; S4 X. p* ^( W. [! B& e
约束条件是在上面的Table里面直接输入最大最小值吧。& ?9 f! `9 }+ A+ Y, I/ x  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).# U6 I7 a% p4 h9 M* d

5 p1 f5 H& }. W2 L7 g6 v" [, \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).
* u5 E5 A* y- \! b9 I' C下面的Equation栏里面应该写入目标函数吧。
) \6 v3 X* R. g/ JMaxProfit (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 , [7 P; ]% d# _; ?2 c+ I
不等式都是在条件里面如! ^. H9 ?3 @! ?( O" D' b
if (DelTankSize >= 6000 && DeliveryTimes < 60)
" P% g8 @6 r+ w- {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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