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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:% }7 T3 F; _/ m7 A
约束条件是在上面的Table里面直接输入最大最小值吧。
0 |- X' U7 [5 `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).' Q( ]/ j' T1 p  V- L
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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).* C/ k6 O. L! @/ S8 w) R! J' X' `
下面的Equation栏里面应该写入目标函数吧。) z0 Z( `5 U" _; k
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 " _+ R  A5 ]  W; P% {
不等式都是在条件里面如
  Y# V) v# e# X7 @4 c+ r$ f% y' Pif (DelTankSize >= 6000 && DeliveryTimes < 60)  g# e! H% n6 ?( D& 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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