Figure 23: Ports for physical interaction in SysML

Gallery

Tutorial

TRAIL: SysPhS-1.1 specification body figures in MagicDraw/Cameo SysML vs Modelica [using Wolfram SystemsModeler]

Section

Tags and keywords

Topic level

INTERMEDIATE

UML keywords

Port

Connector

SysML keywords

FlowDirectionKind::inout

ValueType

SysPhS Keywords

FlowingLMom

LinearMomentum

ConservedQuantityKind

Modelica keywords

Keywords

Slide kind

hybrid diagram

SysML Block Definition Diagram (BDD)

Click on the image to view it full size

SysPhS-1.1: 'The following Modelica code corresponds to Figure 23. It has a model Spring, with two components p1 and p2 of type Flange. Flange is a connector that has one flow component f, and one regular component lV.'


model Spring
  Flange p1;
  Flange p2;
end Spring;
connector Flange
  flow Real f;
  Real lV;
end Flange;

There are errors, the type Real used directly for both 'f' and 'lV' are wrong (or at least not fully consistent):

SysPhS-1.1: p.32: 10.7.8 Modelica modeling, physical interaction: Type Real for 'f' and 'lV' in example Modelica code for Spring do not correspond to 'Figure 23: Ports for physical interaction in SysML', should be Force and Velocity.

Export of block Spring to Modelica from the MagicDraw SysML Plugin or Magic Cyber-Systems Engineer ^® (Cameo Systems Modeler^®) gives:


model Spring
  Spring _Spring;
  model Spring
    Flange p1;
    Flange p2;
  end Spring;
  connector Flange
    flow Force f;
    Velocity lV;
  end Flange;
  type Force=Real(unit="N");
  type Velocity=Real(unit="m/s");
end Spring;

Up next

Figure 24: Connectors in SysML

Notes

[ISSUE]{INFORMATIVE} SysPhS-1.1: p.32: 10.7.8 Modelica modeling, physical interaction: Type Real for 'f' and 'lV' in example Modelica code for Spring do not correspond to 'Figure 23: Ports for physical interaction in SysML', should be Force and Velocity.

Snippets (quotes/extracts)

[SysPhS-1.1] The following Modelica code corresponds to Figure 23. It has a model Spring, with two components p1 and p2 of type Flange. Flange is a connector that has one flow component f, and one regular component lV.

Visit also

SysPhS-1.1

SysPhS zone (SysML Extension for Physical Interaction and Signal Flow Simulation)