1. Chris Paredis Georgia Tech
SysML-Modelica Integration Working Group Report (SE DSIG meeting, Washington DC 3/24/2009)
Chris Paredis Georgia Tech

2. Presentation Overview
Objectives, Focus, Scope
Activities
Current Status
Summary

3. Modelica: Dynamic Systems Modeling
motor torque

4. WG Focus and Scope Objective: Focus: Scope:
Leverage the strengths of both SysML and Modelica by integrating them to create a more expressive and formal MBSE language.
Focus:
Reuse Modelica syntax by integrating Modelica into SysML
Scope:
Cover the Modelica constructs needed for the Modelica Standard Library to be used in SysML
Generate corresponding SysML constructs that fit within the profiling mechanism

5. WG Activities Current Members Face-to-face kick-off meeting
Linköping, Jan 12-14
Fritzson, Paredis, Schamai
Weekly conference call
Wed, 10-11AM Eastern
Wiki
Current Members
Roger Burkhart
Hans-Peter de Koning
Peter Fritzson
Sandy Friedenthal
Nerijus Jankevicius
Chris Paredis
Russell Peak
Nicolas Rouquette
Wladimir Schamai

6. Current Status Initial Mapping (from Linköping meeting)
Maps Modelica onto Blocks/BDD/IBD
Covers most commonly used Modelica constructs (rough guess: 70-80% of models)
Still requires further review by WG
Second proposed mapping
Similar but maps onto ConstraintBlocks/PAR
Both mappings require extensions of SysML semantics
 at this point: not clear which mapping is best

7. Overview of Draft Mapping Document (59-page working document)

8. Simple Illustrative Example
Blocks/BDD/IBD
Modelica
ConstraintBlocks/PAR
Point out that these are models  DAEs not structure
Note: represents equations not structure

9. Analysis Context
To describe the dynamic behavior, the structural components are related to corresponding dynamic model components in a «ModelicaModel»
A «Describe» stereotype (based on Dependency) is used to establish this relationship

10. We could

13. Summary Objective: Good start — still much work to be done
Leverage the strengths of both SysML and Modelica by integrating them to create a more expressive and formal MBSE language.
Good start — still much work to be done
Future Directions:
Complete draft mapping document
Create reference implementation of mapping tool
Expect an update at the Costa Rica meeting…