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LECTURE 7. Course: “Design of Systems: Structural Approach” Dept. “Communication Networks &Systems”, Facul PowerPoint Presentation
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LECTURE 7. Course: “Design of Systems: Structural Approach” Dept. “Communication Networks &Systems”, Faculty of Radioengineering & Cybernetics Moscow Inst. of Physics and Technology (University) . Mark Sh. Levin Inst. for Information Transmission Problems, RAS.

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slide1

LECTURE 7. Course: “Design of Systems: Structural Approach”

Dept. “Communication Networks &Systems”, Faculty of Radioengineering & Cybernetics

Moscow Inst. of Physics and Technology (University)

Mark Sh. Levin

Inst. for Information Transmission Problems, RAS

Email: mslevin@acm.org / mslevin@iitp.ru

PLAN:

1.Concurrent engineering (concurrent processes, concurrency in life cycle)

2.Hierarchical system design

3.Some examples of applied systems (e.g., manufacturing systems)

4.Some problems in mobile communication systems

Sept. 17, 2004

slide2

Illustration for concurrent engineering

Series process

3

4

2

1

5

Process 1

Process 2

Process 3

Process 4

Process 5

t

0

T =ki=1i

Process 1

Process 2

Process 3

Concurrent scheme A

Process 4

Process 5

0

t

T1 < T

Concurrent scheme B

Process 1

Process 2

Process 3

Process 4

Process 5

0

t

Tp < T1 < T

slide3

Concurrency in life cycle

Cycle 1

Cycle 2

R & D

Manuf.

Market

Utiliz.

Recycl.

R & D

Manuf.

Market

Utiliz.

Recycl.

t

0

T

2T

Scheme A

0

t

PLUS modularity, configuration management

Scheme B

0

t

slide4

Concurrency in life cycle for several products

ORGANIZATIONAL DIRECTION:

concurrency, modularity, configuration management, and coordination

for products A, B, etc.

Product A

. . .

0

t

Product B

. . .

0

t

slide5

Hierarchical system design

Set of the best

system decisions

SYSTEM

BOTTOM-UP

PROCESS

C

E

A

B

D

Selection process:

1.Contsraints

2.Multicriteria selection (ranking)

3.Optimization approach

4.Expert judgment

Set of

alternatives

Composition of

selected alternatives

Selection of

the best alternatives

slide6

Main approaches to system design

1.Multidisciplinary optimization (e.g., aerospace engineering, structural engineering)

2.Mixed integer non-linear programming (e.g., chemical engineering, process,

systems engineering)

3.Non-linear multicriteria (multiobjective) optimization including evolutionary

multiobjective optimization

4.Formal methods in design (e.g., mechanical engineering)

5.Global optimization methods

6.Grammatical design (i.e., grammar description of decomposable systems)

7.Methods of artificial intelligence (knowledge-based systems, neural networks,

genetic algorithms, etc.) (e.g., computer engineering, VLSI design)

8.Parameter Space Investigation PSI (e.g., mechanical engineering, nuclear engineering)

9.Hierarchical system design (traditional engineering organizational methods,

modular design methods, combinatorial synthesis)

10.Hybrid methods