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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 |" U# V1 _# v0 n- C约束条件是在上面的Table里面直接输入最大最小值吧。
9 u6 X% s" I  n+ i" F, [% |8 a1 wMinimum 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).4 j! n; V* t# B' y' h
( j0 T2 [& E3 a; }# n! i/ p% B
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).
$ |* x  M9 Q6 f4 H" p2 f下面的Equation栏里面应该写入目标函数吧。! C3 ?' h  A9 c9 @6 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
1 Y$ u+ b/ P9 z* W不等式都是在条件里面如6 j# Y' J( b2 {. d: X6 K% U- e. W
if (DelTankSize >= 6000 && DeliveryTimes < 60)
- S$ M8 s  A% x% c/ g  rReject = 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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