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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 j# H$ V- `6 @  f# }, C
约束条件是在上面的Table里面直接输入最大最小值吧。
9 _7 v& C  C) Y; ~8 {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).
( q5 r4 t, n& M
+ [& ~1 T3 X% J- X& }8 @& a; Z2 yMaximum 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).
* a1 N6 D9 }0 E: [: A; x下面的Equation栏里面应该写入目标函数吧。% F! X  A  j7 V) ~$ P
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
! i7 ]" }) B9 i' B; ?! g不等式都是在条件里面如
# N7 A0 b& I+ X, }if (DelTankSize >= 6000 && DeliveryTimes < 60)% {0 `; S8 F  T1 L8 G" z+ a
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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