Documentation/Modules/BoundHandler: Unterschied zwischen den Versionen
Dirk (Diskussion | Beiträge) (Created page with "==Summary== Some optimizations require bounds on the design variables '''xxx'''. E.g. for the diameter of any mechanical support must be above a certain minimum value. As not a...") |
Dirk (Diskussion | Beiträge) (→Properties) |
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! Algorithm | ! Algorithm | ||
| − | | deterministic | + | | deterministic |
|- | |- | ||
! Design Variables | ! Design Variables | ||
| − | | | + | | continuous variables, discrete or mixed variables are possible. |
|- | |- | ||
! Objectives | ! Objectives | ||
| − | | any number | + | | any number |
|- | |- | ||
! Constraints | ! Constraints | ||
| − | | any number | + | | any number |
|- | |- | ||
! Boundaries | ! Boundaries | ||
| − | | Design variables values outside the boundaries are corrected | + | | Design variables values outside the boundaries are corrected |
|- | |- | ||
! Initial Search Region | ! Initial Search Region | ||
| − | | not affected | + | | not affected |
|- | |- | ||
! Typical X | ! Typical X | ||
| − | | not affected | + | | not affected |
|- | |- | ||
! Initialization | ! Initialization | ||
| − | | not required | + | | not required |
|- | |- | ||
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Version vom 25. Oktober 2015, 13:11 Uhr
Inhaltsverzeichnis
Summary
Some optimizations require bounds on the design variables xxx. E.g. for the diameter of any mechanical support must be above a certain minimum value.
As not all optimization algorithms include bound handling, the module BoundHandler was created.
Properties
General
| Algorithm | deterministic |
|---|---|
| Design Variables | continuous variables, discrete or mixed variables are possible. |
| Objectives | any number |
| Constraints | any number |
| Boundaries | Design variables values outside the boundaries are corrected |
| Initial Search Region | not affected |
| Typical X | not affected |
| Initialization | not required |
Connections
| Starting at his module | One connection of type optimization
|
|---|---|
| Ending at this module | One connection of type optimization
|
Actions
| Name | Description |
|---|---|
| - | - |
Options
The options are currently described as "pop-up help".
Module Description
Any optimization algorithm proposes a new solution x. Some of the values of x might be outside the lower bounds xl and upper bounds xu, specified in the "Problem" module. These variables are corrected to values within the bounds by two different methods:
1. set to bounds
If one of the variables x is below or above the bounds, it is set to the bound value, i.e.
if x < xl, then x = xl else if x > xu, then x = xu
2. reflect
If one of the variables x is below or above the bounds, it is reflected from the bound. The reflection is done such that if x goes to infinity, x is equal to the lower bound and if x goes to minus infinity, it is set to the upper bound.
if x < xl, then x = xu + (xl- xu) / (x - xu) * (xl- xu);
else if x > xu, then x = xl + (xu- xl) / (x - xl) * (xu- xl)
Usage
-
Source Code
ToDo:Link to SVN
References
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