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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:
2 v4 E, }5 W9 {; O5 Q8 w约束条件是在上面的Table里面直接输入最大最小值吧。3 z" E* p& x. _# i  ^; M
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).; X0 u7 d% f# v* ^( f
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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).4 `3 G0 n" r* P6 r' _& c. L" c
下面的Equation栏里面应该写入目标函数吧。
2 e/ @( w3 ]8 t( ?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 h/ R3 M. c6 n
不等式都是在条件里面如
# [9 ]9 `5 ~; f( Rif (DelTankSize >= 6000 && DeliveryTimes < 60)) A" ]! e; X  c; A! 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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