16.842: System architecture and concept generation

16.842

Fundamentals of Systems Engineering Fall 2009

System Architecture

Concept Generation

October 2, 2009

Prof. Olivier de Weck

Note: System Architecture is a very rich topic that can take up

an entire semester by itself. ESD.34 is a recommended course

(E. Crawley) and a number of slides in this lecture are adapted from it. 1

V-Model ? Oct 2, 2009

Stakeholder Analysis

Systems Engineering Overview

Lifecycle Management

Requirements Definition

System Architecture Concept Generation

Cost and Schedule Management

Commissioning Operations

Verification and Validation

Human Factors

Tradespace Exploration System Integration Concept Selection Interface Management

Design Definition Multidisciplinary Optimization

System Safety

System/Product Architecture Framework (ESD.34)

Regulations

System

Architecture

Corporate

strategy

Competition

Market Data

Where?

form

Structure

How ?

Why ?

needs

What ? goals

function concept +constraints

Purpose

Performance

Behavior

Requirements

Market

Strategy

Technology

Customer(s)

Manufacturing , Operations, Illities*

When? timing

Action

Who?

operator

Users

Training

Outbound marketing strategy, Sales, Distribution

*Reliability, Servicability, Environmental Impact, Upgradeability, Flexibility,etc...

can3be

Themes: Ambiguity-Creativity-Complexity

1

Complexity

Mission concept prelim.

detailed chunks integration life-cycle evolution

Creativity Ambiguity

C

D

I

O

Early on ambiguity is high -> reduce ambiguity Next concept are needed -> focus creativity Then complexity starts increasing -> manage complexity

4

A Definition

? Architecture

? The embodiment of concept, and the allocation of physical/informational function (process) to elements of form (objects) and definition of structural interfaces among the objects

? Consists of:

? Function ? Related by Concept ? To Form

Function

Form

Concept

5

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