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Systems modeling language

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SysML, or Systems Modeling Language, is a ___domain-specific modeling language for systems engineering. SysML was originally developed by an open source specification project, and includes an open source license for distribution and use. SysML is derived from, and is an extension of, Unified Modeling Language Version 2.1.

SysML is notable for the wide range of systems concepts it can model. In an automotive application, for example, the language can be used to specify mechanical objectives and constraints such as maximum acceleration, curb weight, air conditioning performance, and interior cabin noise management. It can specify electrical parameters ranging from the FM radio tuning sensitivity to the real-time response of the anti-lock braking control electronics. It can specify and model the embedded software used to control the on-board automotive computers. Finally, it can model the factories used to build the car, as well as the interfaces between the organizations that work in the factory. SysML does not replace the simulation tools used to model specific subsystems, but rather provides the "glue" to model the interaction between subsystems.

A notable innovation of SysML over the UML is support for requirements modeling. During the design process, designers and users of specific sub-systems can communicate the design criteria using several alternative design formats including diagrams, tables, and tree structures. The requirements provide a checkable interface and documentation of the evolution of the system design over time.

History

The orgins of the SysML initiative can be traced to a strategic decision by the International Council on Systems Engineering’s (INCOSE) Model Driven Systems Design workgroup in January 2001 to customize the Unified Modeling Language (UML) for systems engineering applications. This resulted in a collaborative effort between INCOSE and the Object Management Group (OMG), which maintains the UML specification, to jointly charter the OMG Systems Engineering Domain Special Interest Group (SE DSIG) in July 2001. The SE DSIG, with support from INCOSE and the ISO AP 233 workgroup, developed the requirements for the modeling language, which were subsequently issued by the OMG as part of the UML for Systems Engineering Request for Proposal (UML for SE RFP; OMG document ad/03-03-41) in March 2003.[1]

In mid-2003 the SysML Partners,[2] an informal association of industry leaders and tool vendors co-chaired by Sanford Friedenthal and Cris Kobryn, organized an open source specification project to develop the SysML in response to the "UML for Systems Engineering" RFP. The SysML 1.0a open source specification was completed and submitted to the OMG in November 2005.[3] After a series of competing specification proposals, a "SysML Merge Team" proposal was proposed to the OMG in April 2006. This proposal is now being finalized via the OMG adoption process.

OMG SysML

The OMG is adapting and adopting a version of SysML which it calls OMG SysML. Since the OMG adapted and voted upon a version of the SysML specification that included an open source license for distribution and use, OMG SysML is also subject to an open source license for distribution and use. The OMG SysML Specification v. 1.0 is the final adopted specification, [4], and is following the OMG technology adoption process.

References

  1. ^ OMG SE DSIG. "UMLTM for Systems Engineering RFP". Retrieved 2006-06-29.
  2. ^ "SysML Partners". Retrieved 2006-06-29.
  3. ^ SysML Partners. "SysML FAQ". Retrieved 2006-06-29.
  4. ^ OMG document ptc/06-05-04
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