SE DSIG Members,
The Systems Engineering Domain Special Interest Group (SE DSIG) met at
the OMG Technical
from the meeting are included below.
Joint Meeting with ADTF - SysML Presentation
The SE DSIG held a joint meeting with the ADTF to hear the Initial
Submission in response to
the UML for Systems Engineering (SE) RFP that was issued by the OMG on
Following the presentation, a procedural issue was raised that the
submission did not satisfy the OMG specification format. As a result,
a vote was passed 18-16 for SysML to be resubmitted at the next OMG
meeting. Despite this setback, the feedback on the SysML technical
content and approach was quite positive.
The SysML approach
reuses a subset of UML 2 and extends the language as required to satisfy the requirements of the UML for
* Activity diagram extensions to support traditional SE funcitonal flow block diagrams and continuous behaviors
* Composite structure diagram extensions to better integrate input/output flows and deployment
* A new requirements diagram to model requirements, including provisions for subtypes of requriements, traceability between requirements, and assignment to model elements that realize the requirements.
* A new parametric diagram that helps to model performance, reliability, and other parametric relationships, and provide a bridge to engineering analysis tools
* Alignment with AP-233 neutral data interchange format to support interchange of UML models with other engineering tools, such as mechanical, electrical, and analysis tools.
It is believed that these extensions of the selected subset of UML 2
provides a substantial systems modeling capability. Future versions
will be planned to further enhance the language.
Feedback on SysML Presentation to the ADTF
The SE DSIG held an afternoon session to collect additional feedback
on the presentation. Several inputs were received and will be provided
to the SysML team. A follow-up detailed review is scheduled for
January 25-26 at the INCOSE International
which is expected to provide additional constructive feedback and
validation of the approach.
AP-233/UML Integration Demonstration
Ian Bailey from Eurostep presented a brief overview of the ISO STEP
Standards and AP-233. AP-233 is the ISO STEP Standard that represents
a neutral data interchange standard for systems engineering data to
support tool interoperability. This development of UML for SE and the
AP-233 standard have been worked in a cooperative effort from the
beginning to establish both a systems modeling language and a neutral
data interchange format that are compatible. AP-233 is being
developed in a modular fashion, and currently includes a module that
supports interchange of text based requirements. Ian provided a brief
demonstration of how a UML tool could exchange requirements
information with a requirements management tool such as DOORS.
Additional information on AP-233 and "STEP for UML Users" can be found
Collaboration with Other Activities
Several opportunities were noted for the SE DSIG to interact with
other OMG groups. Alan Moore reported on interest in a UML profile
that could help drive distributed simulations under the High Level
Architecture (HLA) framework. Roger Burkhart reported on interest
from the business modeling activities of the Business Enterprise
Integration (BEI) task force, and the potential synergy with the SE
DSIG, in such areas as structural models and requirements management.
He also indicated some potential synergy with current activities of
the Manafacturing and Industrial Systems (MANTIS), such as product
structure and product data management addressed by the Product
Lifecycle Management RFP, and responses to the Knowledge-Based
Engineering RFI. Alan and Roger agreed to work on setting up
discussions on these possible joint interests at the next OMG meeting
Technical Meeting in
OMG SE DSIG Chair
Lockheed Martin Corporation