Trade(-off) study for Client with A1 and A2 instances (dependency injection)

Our system in this trail so far does not really qualify as the target of a trade study because there is only one variable of interest so far, but we can at least examine the basic principle and setup.

The Magic Model Analyst^® (Cameo Simulation Toolkit^®) support block «Analysis» TradeStudy is extended as StudyA and related to the Client, with the injectable reference a:I_A set as the «alternatives» over which the simulation will iterate:

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An «objectiveFunction» usually involves a weighted calculation over more than one value of interest; but we can still run over all instances of concrete implementations of I_A to see which has the highest value. (Later we'll do a proper trade off.)

Cameo: You can create a Simulation Configuration element in a Simulation Configuration Diagram (and you may then copy it to a BDD or Package Diagram if desired).

Setting up the «alternatives» is a bit fiddly; use the Tags dialog under the specification box to set kind = TABLE and source = A.

Then using BindingConnectors from StudyA::client::a to StudyA::a and from StudyA::of::resultA to StudyA::client::resultA in an IBD.

The block StudyA is set as the exectionTarget of a Cameo «SimulationConfig»:

Cameo: You can create a Simulation Configuration element in a Simulation Configuration Diagram (and you may then copy it to a BDD or Package Diagram if desired).

If you run it in Magic Model Analyst^® (Cameo Simulation Toolkit^®) you get the following in the console:


TradeStudy StudyA is started. 
6 of 6 alternatives evaluated for StudyA trade study (0 sec). 
Winning configuration: a : a2.1 
Winning score = 6.0

This agrees with the previous table.

Up next

MultiClient with two injectable service targets

Notes

[FEATURE, TIP, TOOL]{INFORMATIVE} Cameo: You can create a Simulation Configuration element in a Simulation Configuration Diagram (and you may then copy it to a BDD or Package Diagram if desired).

Snippets (quotes/extracts)

A trade study or trade-off study, also known as a figure of merit analysis or a factor of merit analysis, is the activity of a multidisciplinary team to identify the most balanced technical solutions among a set of proposed viable solutions (FAA 2006).

These viable solutions are judged by their satisfaction of a series of measures or cost functions. These measures describe the desirable characteristics of a solution. They may be conflicting or even mutually exclusive.

Trade studies are commonly used in the design of aerospace and automotive vehicles and the software selection process ... to find the configuration that best meets conflicting performance requirements.

Visit also

Visit also (backlinks)

UML/SysML: MagicDraw/Cameo: Instance Table Diagrams are one of the most powerful features of MagicDraw/Cameo! Learn to use them to progressively test, debug, and evolve your models as you work!

UML/SysML: MagicDraw/Cameo 19SP3: GOTCHA/TIP: An Instance Table will not display a row for instances typed by an abstract Class/Block (although one can show such instances as InstanceSpecification symbols on a Class Diagram or Block Definition Diagram)

Related slides (includes other tutorials)

Related slides (backlinks, includes other tutorials)

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