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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 v. n. V, g% |' ^& l
约束条件是在上面的Table里面直接输入最大最小值吧。2 v5 ]7 o# C$ d+ L& D9 ?' `
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).
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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).* p: q8 H; q" k+ \6 c( c* ^' S! u: Y2 S
下面的Equation栏里面应该写入目标函数吧。' q# W1 J3 e" r( ~; Y1 w
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 0 |, \, Y4 t* a2 O9 k
不等式都是在条件里面如
8 z' W( u6 U2 g. Oif (DelTankSize >= 6000 && DeliveryTimes < 60)
3 L3 @5 ?. r2 Q7 C9 O. M( m5 ~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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