systems engineering presentation
TRANSCRIPT
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 1/31
SYSTEMS ENGINEERING
A brief Introduction
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 2/31
Definition A system is collection of different elements
that interact to produce results that are notobtainable by the elements alone.
Systems engineering is an appropriatecombination of theories and tools, carriedout through the use of a suitable
methodology and set of proceduresappropriate for the resolution of real-worldproblems of large scale and scope.
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 3/31
Introduction to systems engineering Systems engineering is often seen as an
emerging discipline
− It has been around since the wheel! The term is often used but frequently
misunderstood
− As is the concept of a systems engineer Systems engineering brings together many
disciplines − Applies to all domains
− Not just engineering
Systems engineering applies across whole lifecycle
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 4/31
Why System Engineering?
Since the development of new modern systems isstrongly driven by technological change, we shall addmore characteristics to a system requiring systems
engineering, namely, that some of its key elementsuse advanced technology.
Systems Engineering is required because it integratesall of the disciplines and groups into a team effort
forming a structured development process thatproceeds from concept to production to operation.
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 5/31
The need for systems engineering
It’s very easy for things to go wrong− Project disasters and failures
Essential to inspire confidence − In staff − In clients
Essential to demonstrate professionalism
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 6/31
ORIGIN OF SYSTEMS ENGINEERING
No particular date can be associated with the originsof systems engineering. Systems engineeringprinciples have been practiced at some level sincethe building of the pyramids and probably before.
The recognition of systems engineering as a distinct
activity is associated with the effects of World War II. The relation of modern systems engineering to itsorigins can be best understood in terms of three basicfactors:
1 . Advancing Technology: provides opportunities for increasing
system capabilities, but introduces development risks that require SE
2 . Competition: require seeking superior & more advanced system
solutions thru the use of systems-level
3 . Specialization: requires partitioning of the system into building blocks
that can be designed and built by specialists, and strict management of their interfaces and interactions
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 7/31
Inter-disciplinary involvement
A T C s y s t e m se n g i n e e r i n g
E l e c t r o n i ce n g i n e e r i n g
E l e c t r i c a le n g i n e e r i n g
U s e r i n t e r f a c ed e s i g n
M e c h a n i c a le n g i n e e r i n g
A r c h i t e c t u r e
S t r u c t u r a le n g i n e e r i n g
S o f t w a r ee n g i n e e r i n g
C i v i le n g i n e e r i n g
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 8/31
Systems may be any technology
Mechanical
Electronic
SoftwareChemical
Thermodynamic
Human organizationsBiological
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 9/31
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 10/31
Primary Function Definitions
Development: includes the activities required to evolve the system fromcustomer needs to product or process solutions.
Manufacturing/Production/Construction: includes the fabrication of engineering test models and “brass boards,” low rate initial production, full-rate production of systems and end items, or the construction of large or unique systems or subsystems.
Deployment: includes the activities necessary to initially deliver, transport,receive, process, assemble, install, checkout, train, operate,house, store, or field the system to achieve full operational capability.
Operation: is the user function and includes activities necessary to satisfydefined operational objectives and tasks in peacetime and wartimeenvironments.
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 11/31
Support: includes the activities necessary to provide operations support,
maintenance, logistics, and material management.
Disposal: includes the activities necessary to ensure that the disposal of decommissioned, destroyed,or irreparable system components meets allapplicable regulations and directives.
Training: includes the activities necessary to achieve and maintain theknowledge and skill levels necessary to efficiently and effectively perform
operations and support functions.
Verification: includes the activities necessary to evaluate progress and
effectiveness of evolving system products and processes, and tomeasure specification compliance.
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 12/31
A washing machine consists of a main clothes tub, anelectric motor, an agitator, a pump, a timer, an inner spinning tub, and various valves, sensors, and controls. Arefrigerator, microwave oven, dishwasher, vacuumcleaner, and radio all perform a number of usefuloperations in a systematic manner. However, theseappliances involve only one or two engineering disciplines,and their design is based on well - established technology.Thus, they fail the criterion of being complex, and we
would not consider the development of a new washer or refrigerator to involve much systems engineering as weunderstand the term, although it would certainly require ahigh order of reliability and cost engineering.
EXAMPLES OF SYSTEMS REQUIRING SYSTEMS ENGINEERING
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 13/31
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 14/31
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 15/31
SYSTEMS ENGINEERING VIEWPOINT
The essence of the systems engineeringviewpoint is exactly what it implies — makingthe central objective the system as a wholeand the success of its mission. This, in turn,
means the subordination of individual goalsand attributes in favour of those of the overallsystem. A systems engineer is always anadvocate of the total system in any contest
with a subordinate objective.
“The whole is more than the sum of its parts.” Aristotle, 384 BC – 322 BC
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 16/31
The Scope of Systems Engineering
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 17/31
WHO DOES SYSTEMS ENGINEERING?
All Members of a Multi-disciplinary team• Engineering• Quality• Subcontract Management
• Business Management• Etc. Everyone involved with development of a
system should be a “systems thinker”.
Keep the end result in mind. Everyone should use a common framework
(PROCESS) and language
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 18/31
Systems engineering provides a systematic andorderly framework that should be accepted and
used by all disciplines during the development of complex systems.
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 19/31
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 20/31
SYSTEMS ENGINEERNG APPROACHES
Systems engineering can also be viewed in terms of thedepictions of the sequence of processes andmethodologies used in the execution of the design,development, integration, and testing of a system. Earlygraphics were linear in the process flow with sequences
of steps that are often iterative to show the logicalmeans to achieve consistency and viability.
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 21/31
The popular systems engineering “ V ” diagramprovides a view of life cycle development with explicitrelationships shown between requirements and
systems definition and the developed and validatedproduct.
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 22/31
Simplified “V” Diagram
S y s t e mi n t e g r a t i o n
S u b - s y s t e md e v e l o p m e n t
S y s t e md e s i g n
R e q u i r e m e n t sd e f i n i t i o n
S y s t e mi n s t a l l a t i o n
S y s t e me v o l u t i o n
S y s t e md e c o m m i s s i o n i n
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 23/31
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 24/31
The Systems Engineering Process
The major steps in the completion of a typicalsystems engineering project are the following:
(1) problem statement; (2) identification of objectives; (3) generation of alternatives; (4) analysis of these alternatives; (5) selection of one of them; (6) creation of the system; (7) operation.
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 25/31
SYSTEMS DOMAINS
With a broad view of system development, it can beseen that the traditional approach to systems nowencompasses a growing domain breadth. And much likea Rubik’s Cube, the domain faces are now completelyintegrated into the systems engineer’s perspective of the
“big (but complex) picture.” The systems domain facesinclude not only the engineering, technical, andmanagement domains but also social, political/legal, andhuman domains. These latter softer dimensions requireadditional attention and research to fully understand their
impact and utility in system development, especially aswe move to areas at the enterprise and global family of systems levels of complexity.
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 26/31
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 27/31
SYSTEMS ENGINEERING AS A PROFESSION With the increasing prevalence of complex systems in
modern society, and the essential role of systemsengineering in the development of systems, systemsengineering as a profession has become widelyrecognized. Its primary recognition has come incompanies specializing in the development of large
systems.
In addition, global challenges in health care,communications, environment, and many other complexareas require engineering systems methods to develop
viable solutions.
The slowness of recognition of systems engineering asa career is the fact that it does not correspond to thetraditional academic engineering disciplines.
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 28/31
Career Choices
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 29/31
The Challenge of Systems Engineering
An inhibiting factor in becoming aprofessional systems engineer is that itrepresents a deviation from a chosenestablished discipline to a more diverse,
complicated professional practice. It requiresthe investment of time and effort to gainexperience and an extensive broadening of the engineering base, as well as learning
communication and management skills, amuch different orientation from the individual’ s original professional choice.
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 30/31
Conclusion
Systems engineering is hard! There will never be an easy answer to the
problems of complex system development
Disciplines need to recognize each others strengths and actively rather than reluctantly
cooperate in the systems engineering process
7/30/2019 Systems Engineering Presentation
http://slidepdf.com/reader/full/systems-engineering-presentation 31/31
Is Systems Engineering the
Solution to all of the World’sSystems Problem?
MAY NOT BE.........
But it can certainly help to solve
quite a few of them.
Thank You