SysML, or Systems Modeling Language, is a general-purpose systems engineering modeling language. SysML is derived from, and is an extension of, Unified Modeling Language Version 2.0. SysML specfication 1.0 was finalized April 26, 2006 and is expected to be formally ratified by member organizations in February, 2007.
A tool to connect mechanical, electrical, and software sub-systems
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 sensitivty 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.
A notable innovation of SysML (over other standardized modeling languages such as 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.
SysML does not replace the simulation tools used to model specific subsystems, but rather provides the "glue" to model the interaction between subsystems.
SysML holds particular appeal for the aerospace industry[citation needed] which designs products with highly optimized electrical, mechanical, and software sub-systems. In creating a standardized modeling language, it is hoped that the design tradeoffs can be better managed.
Sponsorship
SysML is sponsored by the Object Management Group (OMG) and INCOSE.
The language was developed to meet the requirements contained in the UML for Systems Engineering RFP (ad/2003-03-41).
Partners
The following companies submitted or supported parts of the specification of SysML
Industry
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United States Government
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Vendors
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Academia
Liasons
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