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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:, b7 w& B3 i, L( w
约束条件是在上面的Table里面直接输入最大最小值吧。$ v3 t& x; {8 _4 Y% r, q. x
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).1 ?) [, \+ ~1 ]+ u: c
) o" d& p. G# e
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).  Z0 _, T# M1 O4 N9 g
下面的Equation栏里面应该写入目标函数吧。* j5 l4 u- |! t4 ^7 O. 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 3 Z( v! C0 E8 t- u! i
不等式都是在条件里面如
0 b& V" r; i3 ]! nif (DelTankSize >= 6000 && DeliveryTimes < 60)
0 L/ l7 ?0 y% u. _0 c$ N5 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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