Model of Knowledge by Fitzgerald Systems

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====== Integrating SysML with other languages ======

===== Introduction =====

SysML can be integrated with other languages such as Modelica with the following process:

  - Create a metal-model for the specific domain that is being integrated. This could be done with the use of an ontology.
  - Create a SysML profile that will map the meta model to SysML stereotypes
  - Create a transformation map between the meta model and SysML profile's entities
  - For each transformation include the corresponding API call to the domain specific tool

==== Methods of Transformation ====
There are two mainstream methods of transformation between two meta-models: Triple Graph Grammars (TGG) and Queries/Views/Transformations (QVT).

=== Triple Graph Grammar ===

{{ :bok:eng:mbse:sysml:integrate:tgg.png?600 |}}
An example of using TGG to map between SysML and Modelica ((C.Paredis and T. Johnson, “Using OMG's SysML to support simulation” Proceeding of the 2008 Winter Simulation Conference (2008))). 

=== Queries/Views/Transformations ===

===== Parts =====
==== Integrating SysML with Modelica ====

Modelica has emerged as a standard or modeling continuous dynamics of systems. Johnson((T. Johnson, C. J. J. Paredis and R. Burkhart, [[http://omgsysml.org/Modelica2008.Integrating_Models_and_Simulations_of_Continuous_Dynamics_into_SysML.TAJ.08-01-21.pdf|"Integrating Models and Simulations of Continuous Dynamics into SysML"]] (2008). Accessed on Jul. 2nd, 2020)) explores synergies between SysML and Modelica at 3 different levels:
  - Definition of continuous dynamics models in SysML;
  - Use of triple graph grammar to maintain a bi-directional mapping between these SysML constructs and Modelica models in order to maintain consistency;
  - Integration of simulation experiments with other SysML constructs to support MBSE.

SysML benefits from the detailed Modelica semantics for representing Differential Algebraic Equation systems combined with discrete events; Modelica benefits from the broader information modeling context provided in SysML.

===== References =====
Model of Knowledge by Fitzgerald Systems

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