Systems Engineering(Sistem Mühendisliği)

Doç. Dr. A. Egemen YILMAZAnkara Üniversitesi Elektrik-Elektronik Müh.

Bölümüaeyilmaz@eng.ankara.edu.tr

Problems and Handling Problems in the text-books Problems in real-life Are they the same? Are they similar?

New Paradigm in Higher Education Just in case teaching (before 1950s) Just in time learning (after 1950s)

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Systems Engineering The function of systems engineering is “to guide the

engineering of complex systems”. To guide: “to lead, manage, or direct, usually based on the

superior experience in pursuing a given course” and “to show the way”.

Engineering: “the application of scientific principles to practical ends; as the design, construction and operation of efficient and economical structures, equipment, and systems”.

System: “a set of interrelated components working together toward some common objective”.

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Systems Engineering

Notes: “Complex” system: a system in which the elements are diverse

and have intricate relationships with one another. “Engineered” system: excludes complex systems such as living

organisms or ecosystems

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Engineered Complex Systems

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Engineered Complex Systems

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Systems Engineering Focused on the system as a whole; it emphasizes its total

operation. Looks at the system from the outside, that is, at its interactions

with other systems and the environment, as well as from the inside.

Concerned not only with the engineering design of the system, but also with external factors, which can significantly constrain the design, including the identification of:

customer needs, system operational environment, interfacing systems, logistics support requirements, the capabilities of operating personnel, and such other factors

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Systems Engineering Also responsible for leading the formative (concept

development) stage of a new system development Important design decisions at this stage cannot be based

entirely on quantitative knowledge, but rather must often rely on qualitative judgments utilizing experience in a variety of disciplines

Bridges the traditional engineering disciplines. The diversity of the elements in a complex system requires different engineering disciplines to be involved.

Coordinates the design of each individual element. Especially important when individual system elements are designed, tested, and supplied by different organizations

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Origins of Systems Engineering First known system with specifications: Noah’s Ark Egyptian pyramids Industrial Revolution World War I World War II Cold War …

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Responsibilities of a Systems Engineer

Requirements Analysis Trade-Off Analysis (Decision Modeling) System Test and Evaluation Requirements Verification Technical System Design Reviews Risk Management Configuration Management Reliability, Maintainability, and Availability (RMA) Engineering Producibility Engineering Safety Engineering Human Factors Engineering System Integration

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Breakdown of a System

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Breakdown of a System

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Breakdown of a System

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Breakdown of a System

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Breakdown of a System

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System Hierarchy

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Systems Engineering Related Disciplines

Management (but differs by being analytical and advising while management acts as the decision makers)

Designers (but differs by being the integrators of the designs instead of being involved in all the intricate details of each component)

Specialty engineering (but differs by being the recipient of the specialty engineering tasks instead of the prime contributors)

Systems analysis (but differs by keeping focus on hardware, software, and interface development instead of mathematical models evaluation of alternatives and decision model designing)

Operations research (but differs by not limiting the changing of resources used in the way that the system operates)

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Systems Engineering Related Disciplines

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Career Decisions

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Career Decisions

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Systems Engineering Process

SIMILAR Method State the Problem Investigate Alternatives Model the System Integrate Launch the System Assess Performance Re-evaluate

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Systems Engineering Process

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The V-Diagram

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