Icon class icon_class fas fa-quote-left icon_class_computed fas fa-quote-left Related content Figure 10-1: Stereotypes defined in SysML ConstraintBlocks package REFERENCE CARD: Types of Block Properties and Block compartments REFERENCE CARD: Property cheat-sheet for Block Source OMG Systems Modeling Language (SysML) 1.6 Copyright information About Object Management Group copyright in text extracts quoted from OMG specifications for educational purposes Snippet kind INFO UML keywords Constraint SysML keywords ConstraintBlock SysML Parametric Diagram Keywords mathematics equation Previous snippet Reusable constraint definitions may be specified on block definition diagrams and packaged into general-purpose or domain-specific model libraries. Such constraints can be arbitrarily complex mathematical or logical expressions. Full quote Parametric diagrams include usages of constraint blocks to constrain the properties of another block. Next snippet The usage of a constraint binds the parameters of the constraint, such as F, m, and a, to specific properties of a block, such as a mass, that provide values for the parameters. Related snippets Constraint blocks provide a mechanism for integrating engineering analysis such as performance and reliability models with other SysML models. Related snippets (backlinks) The constrained properties, such as mass or response time, typically have simple value types that may also carry units, quantity kinds, or probability distributions. A pathname dot notation can be used to refer to nested properties within a block hierarchy. This allows a value property (such as an engine displacement) that may be deeply nested within a containing hierarchy (such as vehicle, power system, engine) to be referenced at the outer containing level (such as vehicle-level equations). The context for the usages of constraint blocks shall also be specified in a parametric diagram to maintain the proper namespace for the nested properties. A constraint block is defined by a keyword of «constraint» applied to a block definition. Properties of this block define parameters of the constraint, with the exception of properties that hold internally nested usages of constraint blocks. A parametric diagram is a restricted form of internal block diagram that shows only the use of constraint blocks along with the properties they constrain within a context. Visit also Visit also (backlinks) Flags
