MBSE with CORE 100821

Functions and Items: Two Primary Parts of Behavior

Functions • A process that transforms inputs into outputs • An action taken by the system or one of its elements • Represented by a verb or verb- noun pair

Items • Cross the system (or component) boundary • Passive things that are inputs and outputs of our system • Can be data, signals, force, physical objects

Color Code

Component

Component

Requirement Element

Functional Element

input to / triggers

performs

performs

Physical Element

Interface Element

outputs

Item

Verification Element

Other Element

Function

Function

Item

input to / triggers

outputs

309

A Complete Set of Executable Constructs (Structured Representations) S EQUENCE

C ONCURRENCY

L OOP

S ELECT

M ULTIPLE -E XIT

R EPLICATE

I TERATE

310

MBSE with CORE