Author: Tim Weilkiens

Logo OMG Systems Modeling Language (OMG SysML)

Where is SysML 1.4

Recently I have finished my blog post series about the changes of SysML 1.4. Unfortunately, SysML 1.4 is still not officially published yet. I was a member of the SysML 1.4 revision task force of the OMG that has compiled the new SysML version. We have analyzed the issues that were filed against SysML, elaborated…
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Seats available for the Nordic MBSE School

Well, actually it is summertime. However the weather reminds me more of autumn. At least here in Sweden. In any case it is a good time to plan and book your next training. One of my favourite projects the Nordic MBSE School provides a comprehensive MBSE program. Four course modules for you to combine to…
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SysML Diagram Interchange Architecture

What’s new in SysML 1.4 – SysML Diagram Interchange

The Diagram Definition (DD – previously known as Diagram Interchange (DI)) is a format to exchange diagram data between tools. The data about diagrams is separated from the data about the model information. The interchange format for the model data is XMI (XML Metamodel Interchange; see XMI specification page). The following figure depicts the whole…
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SysML Block FFDS with behavior compartments

What’s new in SysML 1.4 – Several minor changes to the block and port concept

The sixth part of the blogpost series about the changes in SysML 1.4 presents the updated concepts for blocks and ports. The new concept of bound references is already covered in the special blogpost What’s new in SysML 1.4 – Constraining decompositions. Behavior Compartment A SysML block can own behaviors. For instance a state machine…
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Nordic MBSE School

The Nordic MBSE School

The Nordic MBSE School is one of my favourite projects. The Nordic MBSE School is organized by the Nordic Systems Engineering Alliance – a network of small and medium-sized organisations with unique competencies in product creation and technical leadership. One of these organisations is my company oose. Model-based Systems Engineering (MBSE), has for the last…
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What’s new in SysML 1.4 – Units

The fifth part of the blogpost series about the changes in SysML 1.4 presents the updated concept of units. But first a big sorry for being quiet for such a long time. But better be quiet than posting spam. I hadn’t enough time to continue my series about the news and updates of SysML 1.4…
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NoSE 2015: Last submissions, please!

End of this week is the deadline for the Call for Presenters for the 3rd Nordic Systems Engineering Tour. Share your knowledge and join the tour. The NoSE Tour is a non-commercial community event organized by four local chapters of INCOSE. It is a 1-day conference traveling from Hamburg to Copenhagen via Stockholm to Helsinki.…
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Binding of bound references

What’s new in SysML 1.4 – Constraining decompositions

The fourth part of the blogpost series about the changes in SysML 1.4 presents the new concept to constrain a decomposition hierarchy. The following figure shows a simple product tree of a drone subsystem (DS) for a forest fire detection system (FFDS). It is the sample system I’ve also used in some previous posts. The…
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SysML 1.4 - View and Viewpoint - Example

What’s new in SysML 1.4 – View and Viewpoint

The third part of the blogpost series about the changes in SysML 1.4 presents the updated concept of view and viewpoints. View and Viewpoint are model elements of SysML since the very first public version 1.0. As you may know SysML was developed based on a request for proposal with a set of requirements. One…
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SysML 1.4 ElementGroup

What’s new in SysML 1.4 – Grouping of Elements

The second part of the blogpost series about the changes in SysML 1.4 presents the new concept to group elements. The use case is simple: Create a group of model elements: Okay, on the second thought there are some more: Update a group and Delete a group. And I’m sure that you’ll find some more…
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