Beginners Guide to Model-Based Systems Engineering

12/18/2018

How Do You Know When You Are Done?

• Decompose behavior in sufficient detail: • When a function can be uniquely allocated to a single component STOP DECOMPOSING • When a function cannot be uniquely allocated to a single component CONTINUE DECOMPOSING IT FURTHER • During the allocation/decomposition process, preserve • Inputs and outputs • Input/output sequences • Number and conditions for exits • Performance • Concurrently, refine the component architecture, as required

The objective is congruence between behavior and architecture

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Capturing the Interfaces

joins (joined to)

Interfaces: •Logical •Bi-directional •Decomposable

Component

Interface

includes (included in)

comprised of (comprises)

We have established the Items that cross the Interfaces by allocating Functions to Components

Links: •Physical

Link

includes (included in)

•Have capacity •Decomposable

transfers (transferred by)

Items: •Have size

Item

input to (inputs)

outputs (output from)

triggers (triggered by)

Function

Function

allocated to (performs)

allocated to (performs)

Component

Component

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