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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:
+ t0 _( r. p; O# Y9 f& @+ ]$ [约束条件是在上面的Table里面直接输入最大最小值吧。* r% ~8 i. r0 Z, Q: z; C( ~
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).9 V7 J& T3 k2 Z* Z7 s9 @$ W
3 @2 F& Q7 P) M. z! l
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 Y. s* Q& w7 x
下面的Equation栏里面应该写入目标函数吧。. t$ X7 o# X8 J  F, o1 ^
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
5 N% f2 H' J3 _, _不等式都是在条件里面如
5 b, V: d, D! B; C+ w# _* W. qif (DelTankSize >= 6000 && DeliveryTimes < 60)* e' k- d* G/ ~/ ?. O6 r
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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