设为首页收藏本站

最大的系统仿真与系统优化公益交流社区

 找回密码
 注册

QQ登录

只需一步,快速开始

查看: 4174|回复: 2

[交流] 关于优化工具中约束条件的表达

[复制链接]
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:
. b$ V1 Z4 B, e- |( j! o  L约束条件是在上面的Table里面直接输入最大最小值吧。, b; V) {# o, O$ g" u
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).) n, `- N) F5 H* |5 e1 p0 h1 ^5 }8 c( \

* R! E; F4 }$ o. N( p3 k7 iMaximum 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).
, s" e/ S& W8 n; A# Y下面的Equation栏里面应该写入目标函数吧。
- C3 R" n- e# R# v6 PMaxProfit (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 ' S9 b; [7 e* S- a+ w
不等式都是在条件里面如
- K% ^# u, L/ T; F# @! Jif (DelTankSize >= 6000 && DeliveryTimes < 60)
+ ]4 v# B( n7 Y- q9 ~) d4 JReject = 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。
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2025-12-11 03:53 , Processed in 0.013618 second(s), 14 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表