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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:
3 c, G" D% o5 Z8 E3 S约束条件是在上面的Table里面直接输入最大最小值吧。5 r( o8 Y1 V$ g% d* q' H2 D
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).
- [) G  F1 S. C/ @1 k& R; M4 b0 y4 F8 J4 C2 N# b. Q5 h1 O: m
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).
+ U9 [" f8 N7 }' z0 e$ L' l- P& j下面的Equation栏里面应该写入目标函数吧。
- S, T0 `6 n$ J: iMaxProfit (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
) C3 f" Y: U  x& S1 w/ ^不等式都是在条件里面如" I7 H; C. F$ _$ Q! N1 q& P
if (DelTankSize >= 6000 && DeliveryTimes < 60)
' B" C% ]; C7 X4 P% f  W2 KReject = 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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