Author: Tim Weilkiens

SYSMOD Zigzag Base Architecture - FFDS example

The Base Architecture

How to relate requirements and architecture on different abstraction levels The SYSMOD zigzag pattern describes the different levels of abstractions and the relationship between requirements and architecture. Your system requirements do not start at the very top of the levels, i.e. they already include some technical decisions. The base architecture is the architecture one level above…
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System configuration in MagicDraw

How to select a single configuration from a variant model?

In a previous post I’ve described an approach how to model variants with SysML (Variant Modeling with SysML). Modeling variants leads to a model that represents a multidimensional configuration space. It is a description of each variant, the common elements and the relationships between them in a single model. A single configuration is a valid…
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SysML 1.3 / SYSMOD Reference Card (English)

SysML 1.3 released

The OMG has published the new SysML version 1.3. The specification document is available on the OMG website. You can also download a version with change bars to see the differences to the previous version. The new version reflects feedback from the industry using SysML. In the SysML working group we’ve done major changes to…
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Structure of a SysML model

Structure of a SysML model

On the first view it seems to be simple to define the package structure of a SysML model. However you’ll often get problems with a implicit built structure. A model has many – orthogonal – aspects and abstraction layers that could be mapped into the package structure, e.g. domain, modeling, or organizational aspects. You can…
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SysML Matrix Example: Functional groups of the FAS method (source: http://www.fas-method.org)

New views for SysML

I often hear arguments against SysML that the diagrams are not suitable for the stakeholder concerns. For example it is not a good idea to choose the requirements diagram to show thousands of requirements or a block definition diagram to show the complete mapping of the functional to the physical architecture with allocate relationships. It…
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Variant Modeling with SysML

Many systems exist in different configurations. A product line, a custom product or different designs for trade-off studies. The current version 1.2 of SysML doesn’t provide explicit built-in language constructs to model variants. The profile mechanis of SysML can be used to extend SysML with a concept for variant modeling. I’ve defined a simple variant…
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Problems, introduction and opportunities of MBSE

In my last post I’ve reported from my visit of the Graz Symposium Virtual Vehicle Development. In my workshop at the symposium I asked the participants about the problems that are solved by MBSE. what must be done/what we need to introduce MBSE in the organization. the opportunities of MBSE. We had very interesting discussions about…
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MBSE meets Virtual Vehicle Development

Virtual Vehicle development is an exciting new technology. This week I’ve visited the 5th Graz Symposium Virtual Vehicle in Graz (Austria). I was very impressed by the engineering methods & tools that were already reality. An important missing link for the virtual vehicle development is the combination of all the single models and simulations in…
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Open source MBSE Plugin for MagicDraw with SysML

A message from the  INCOSE Telescope modeling challenge team: The INCOSE Telescope modeling challenge team releases version 1.1. of its MBSE plugin for MagicDraw with SysML: https://sourceforge.net/projects/mbse4md/ Support for more productive Model Based Systems Engineering, following the recommendations in the Cookbook of the INCOSE SE2 Challenge team. The Plugin for the MagicDraw modelling tool provides support…
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Next edition of my MBSE book

Since a few months I work on the next edition of my MBSE book “Systems Engineering with SysML/UML”. I plan to publish it in the first quarter of 2013. It’ll be the third edition of my German version. So far I have no plans for the English version of the book. New content will be:…
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