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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:
( g4 A2 Z/ s1 o约束条件是在上面的Table里面直接输入最大最小值吧。
1 \+ v/ L! ?/ I, W2 fMinimum 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).- O. o6 R  k" |3 v

' Q" H3 V/ o+ l. ]5 }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).
' i: r9 Z% U  U% Z' c下面的Equation栏里面应该写入目标函数吧。
! B% `. Y% u' a- Z3 Y, I. lMaxProfit (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: x* Z* {- h( m$ h不等式都是在条件里面如" R) c" `  t$ M3 o5 i$ @$ t
if (DelTankSize >= 6000 && DeliveryTimes < 60)) C# n8 n6 d9 J% [  V1 c1 l' Q' c" C
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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