The OMG has voted for the SysML v2 RFP on their quarterly technical meeting in San Francisco last week. That means the set of requirements for SysML Version 2.0 is fixed and officially published. It took more than two years to write the RFP. Systems engineering modeling experts from all over the world - users and tool vendors - worked out the requirements based on the 10-year experience with SysML version 1. [caption id="attachment_1494" align="alignright" width="300"] SST Kick-off Meeting in San Francisco...

You have probably read the article “Warning to Humanity: A Second Notice” that is currently spread through the media. To be honest, it is not surprising that our world is in bad shape. We know that since decades, but our action is too lame in most cases. Political, financial, and other issues dilute real consequent actions. Currently, I work a lot on safety engineering respectively model-based safety engineering. It is an important aspect of systems engineering that comes with a set...

A post by guest author Christian Neureiter. Engineering the „Smart Grid“ has proven to be a challenging task. A critical factor for the development of dependable and robust grids is the successful establishment of interdisciplinary cooperation between different stakeholder. To serve this purpose, major research has been conducted over the last years on how to realize domain-specific Model-Based Systems Engineering. One of the most promising outcomes here is the publicly available “SGAM Toolbox” developed at Salzburg University of Applied Sciences. This toolbox...

A post by guest author Axel Scheithauer: SysML is based on the UML, and I think that was a good choice. However, some concepts of the UML don’t make sense in the world of systems and then sometimes lead to not so useful ideas, like typed binding connectors (how many user defined types of equality are there?). One of these concepts is the possibility to conjugate ports. You probably know that ports are interaction points of blocks, used to connect them in...

The third and last part of the blog post series about the changes of SysML 1.5 covers several minor updates. Reception compartment Now SysML explicitly defines a block compartment for signal receptions. It is the same notation as in UML. The following figure depicts an example of the reception compartment. [caption id="attachment_1298" align="aligncenter" width="125"] Signal reception compartment of a block in SysML 1.5[/caption]   Requirement compartments The SysML specification mentions that requirement relationships could also be depicted in compartments. But the notation was not explicitly defined,...

This post is the second part of the blog post series about the changes of SysML 1.5. The biggest novelty in SysML 1.5 is only visible on the second view. If you do not use the new feature, you will not recognize it. Since version 1.0 SysML provides the model element Requirement to model text-based requirements, it has only two properties: one to specify the ID of the requirement and another one for the requirement text. SysML intends that modelers can define additional...

This blog post series presents the changes of the SysML version 1.5 that are relevant for modelers. I skip those changes that only affect the specification document like typos or rewordings. You may also be interested in the blog post series about the changes of the SysML version 1.4. The first part of this blog post series gives a brief overview of SysML 1.5. The second part covers the main change that affects the modeling of requirements, and the last part...

A post by guest author Guillaume Finance: A new EA User Group for the Enterprise Architect users and experts community will take place this year in London on Thursday 18th and Friday 19th of May. Compared with previous events, this EAUG will run on 2 days. This decision has been taken based on a recent survey where a day dedicated on training with the tool was requested. This first training day is optional, whilst the second day will include talks as on previous years. Note: where...

A post by guest author Guillaume Finance: SysML 1.4 reference cards are now available with diagrams defined with Enterprise Architect modelling tool from Sparx Systems. This alternative version, available in English and French, has been shared by Guillaume Finance. You can download the reference cards from the download section. Note: SysML is available in the Systems Engineering and Ultimate editions of Sparx Systems Enterprise Architect....