Tag: SysML

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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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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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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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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Logo OMG Systems Modeling Language (OMG SysML)

What’s new in SysML 1.4 – Overview

We are still waiting for the official release of the SysML version 1.4. The work on the update already finished several months ago. Due to some organization obstacles the official release is delayed. In April 2014 the OMG published a beta version of the SysML 1.4 and some tool vendors already published updates of their…
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Systems Engineering with SysML/UML

New edition Systems Engineering with SysML/UML covers SysML 1.4 and more

My publisher just released the third edition of my book “Systems Engineering with SysML/UML”. To be exact it is the German version of my book “Systems Engineering mit SysML/UML”. Since the second edition 6 years have passed. In this time the language SysML, my MBSE methodology SYSMOD and MBSE in general have been further developed.…
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Use case with property ownedBehavior shown in a diagram

HowTo Model Use Case Activities in SysML

Activities are commonly used to describe the behavior of use cases. In SysML these are separate model elements: the use case and the activity. The use case is a specification of behavior. Whereas the activity is the definition of the implementation of the behavior. Instead of an activity you can also use interactions (sequence diagrams),…
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