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Systems Development Process 5b Engineering Development Stage (2)…
Systems Development Process 5b Engineering Development Stage (2)
Integration and Evaluation Phase
concerned with assembly and integration of the
engineered components of the new system
The goal is to qualify the engineered components for
production and subsequent operational use
Migration from Engineering Design to Integration and Evaluation Phase
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Activities for the Integration and Evaluation Phase
Requirements Analysis
analysing the system design requirements for consistency and
completeness
identifying requirements for all external and internal interactions and
interfaces
Functional analysis and Design.
analysing detailed user interaction modes
designing and prototyping user interfaces
component interactions and interfaces and identifying design, integration
and test issues
Component Design
Implementing detailed hardware designs and software code after review
and
Building prototype versions of engineered components
Laying out preliminary designs of all hardware and software components
and interfaces
Design Validation
Conducting test and evaluation of engineered components with respect to
functions, interfaces , reliability and producibility
Correcting deficiencies and
Documenting product design
Deliverables for the Integration and Evaluation Phase
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Differences Between the Integration and Evaluation Phase and
Engineering Design Phase
Program Focus:
The engineering design phase is focused on:
the design and testing of individual system components
The integration and evaluation phase is concerned with:
assembling and integrating these engineered components into a complete
working system
Program Participants:
The engineering design phase is anchored by:
different engineering specialists, the systems engineer and systems
developer
The integration and evaluation phase is anchored by the:
design engineer who focuses on the design and development of appropriate
test equipment and
the systems engineer defines the test requirement and evaluation criteria
test engineer who focuses on test conduct and data analysis
Critical Problems:
At the engineering design phase:
some compatibility related problems may still remain hidden in this phase:
unknown- unknowns or [unk-unks]
At the integration and evaluation phase:
assemblage and integration of systems components, sub-systems etc tend
to uncover most of these incompatibility related problems hence bringing them
to the known unknown status
Principal Participants and their estimated effort per developmental phase
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Systems Engineering Methods/Life Cycle Models
System life cycle models have evolved significantly over the past two decades. Furthermore, the number of models has grown as additional unique and custom applications have been explored.
There is no single life cycle model that:
is accepted worldwide
fits into every possible situation.
Various standard organizations, government agencies, and engineering
communities have published their own models or frameworks that can be
used to construct a model.
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Strength of Systems Engineering Methods
The levels of feedbacks embedded
The extent to which it reflects concurrent engineering
How well it can fit in the different phases of a system’s design
Selecting a systems engineering method
Management centred method
Product design and development centred
Procurement centred method