1. Modeling Modelica Interfaces with SysML v1.3
November 21, 2012
Sanford Friedenthal
5/1/2019

2. Background
Conrad approach to simulation modeling approach with SysML presented to SysML-Modelica RTF on November 21, 2012
Sandy shared some earlier slides from SysML v1.3 Interfaces presentation on Modelica-like interface modeling
Intent was to assess conceptual alignment with Conrad approach
Nicolas raised issue regarding inability to model N’ary connections
Sandy’s approach used association blocks that do not support N’ary connections
Sandy updated approach to address N’ary connections for further discussion
Previous and updated approach included in this slide set
5/1/2019

3. Previous Slides from Sandy’s SysML v1.3 Presentation
5/1/2019

4. Constrained Ports to Support Engr Analysis
Modelica-like interfaces support engineering analysis
Refer to SysML-Modelica Transformation Specification
Constraints included in ibd
Use of binding connectors on ibd
Binding connector typed by association A1 contains conservation laws
Proxy ports enable access to value properties and constraint parameters
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5. Constrained Ports for Analysis
Parametric diagram showing parameter and property binding
Association block contains Conservation Law constraint
5/1/2019

6. Updated Slides to Support N’ary Connections
5/1/2019

7. Connecting Modelica Components with N’ary Connections (Simplified)
This concept is elaborated on the following slides
3 components are connected via an N’ary connection that specifies the conservation laws
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8. Connecting Modelica Components with N’ary Connections (Elaborated)
5/1/2019

9. Analysis Context Provides Context for Connecting Components
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10. Component Port and Constraint Definitions
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11. Modeling Approach Define Analysis Context System under analysis
Components
Proxy ports with cross and through variables
Component equations as constraint blocks
Constraints for Conservation Laws to Connect Components
N’ary junction
5/1/2019