Figure 34: Value types and units for physical quantities

Gallery

Tutorial

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

Section

Tags and keywords

Topic level

SysML keywords

SysPhS Keywords

Keywords

Slide kind

SysML Package Diagram

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Modelling and style

The SysPhS sample does not leverage the quantityKind Slot on Unit definitions.

Nothing to add here, trail figure agrees with spec version.

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Figure 35: Simulation platform stereotypes

Notes

Snippets (quotes/extracts)

[SysML-1.6] SysML ValueType adds an ability to carry a unit of measure and quantity kind associated with the value.

[SysML-1.6] A ValueType defines types of values that may be used to express information about a system, but cannot be identified as the target of any reference.

[SysML-1.6] A Unit is a quantity in terms of which the magnitudes of other quantities that have the same quantity kind can be stated.

[SysML-1.6] Unit is defined as a non-abstract SysML Block defined in the SysML UnitAndQuantityKind model library.

[SysML-1.6] quantityKind : InstanceSpecification [0..1] A kind of quantity, represented by an InstanceSpecification classified by a kind of SysML QuantityKind, that may be stated by means of units. A value type may optionally specify a quantity kind without any unit.

[SysML-1.6] A QuantityKind is a kind of quantity that may be stated by means of defined units. For example, the quantity kind of length may be measured by units of meters, kilometers, or feet.

[SysML-1.6] QuantityKind is defined as a non-abstract SysML Block defined in the SysML UnitAndQuantityKind model library.

[SysML-1.6] QuantityKind, or a specialization of it, classifies an InstanceSpecification to define a particular "kind-of-quantity" in the sense of an "aspect common to mutually comparable quantities" [VIM3-1.2], ...

Visit also

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

Visit also (backlinks)

Webel: SysMLv1.x: AVOID (where possible) SysML Unit names that are the same as unit symbols. Unit names SHOULD start with a lower case Latin alpha letter. Custom Unit names should be a single lower case word or lowerCamelCase.

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