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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:
# \1 [/ K( {) I. i" R  ~约束条件是在上面的Table里面直接输入最大最小值吧。
. Q* ^5 E; w" a8 ^! JMinimum 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).
6 @" K3 B2 o$ n% u* {2 a3 v+ c( B+ _' g( N: e* D, i" M& F/ K
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).
; \  W) C3 W2 C" |) S$ P下面的Equation栏里面应该写入目标函数吧。5 u+ t1 q0 y+ L  p( j9 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 l7 c& q3 {% P4 X) }不等式都是在条件里面如, G0 n9 ~  A* P4 m8 p) R
if (DelTankSize >= 6000 && DeliveryTimes < 60)
7 k3 M7 y- V, Y  w' gReject = 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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