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Prof. Jer-Nan Juang Adjunct Professor National Taiwan University. Introduction of System Engineering. Prof. Jer-Nan Juang 09/25/2008 (GSC). Outline. Definition of System Engineering Systems Engineering Process Models System Engineering Standards.

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prof jer nan juang adjunct professor national taiwan university
Prof. Jer-Nan Juang

Adjunct Professor

National Taiwan University

Introduction of System Engineering

Prof. Jer-Nan Juang

09/25/2008 (GSC)

outline
Outline
  • Definition of System Engineering
  • Systems Engineering Process Models
  • System Engineering Standards
process example a table of delicious dishes
Process Example: A Table of Delicious Dishes

Customer

Delivery

Complaint:

Bad Quality

Business

Behavior

FQC : Final Quality Control

Requirements:

Eat

Final Check

Correction

Design Behavior

Recipe

Discount

Improvement

Trash

Market

Packing

Purchase Behavior

IPQC:

In Process Quality Control

Monitoring & Measurement

Test

Bargain

Resources:

Facilities

Cash

Manpower

Knowledge

Parameters:

Temperature;Taste

Preparation:

Equipment; Sauce

IQC : Incoming Quality Control

Production Behavior

Rinse

Cook

an example of pdca

WBS Control Sheet

WBS

Title

Owner

Acting

M-Y

Cost

Key Milestones

SOW

Deliverable

Risk

This Week Report

Next Week Application

WBS

Title

WBS

Title

Owner

Acting

Owner

Acting

M-Y

Cost

M-Y

Cost

Key Milestones

Key Milestones

Man-hours Spent

Man-hours applied

Cost

Budget Applied

Progress Report

Work Description

An Example of PDCA

PLAN

2.1

BUS

Account Manger

Approval

Subsystem

2.1.1

AOCS

2.1.2

EPS

2.1.3

RCS

Application

CI

2.1.3.1

Battery

2.1.3.2

PCDU

2.1.3.3

Solar Array

DO

ACT

CHECK

homework system process
Homework: System Process
  • Describe a system process to manufacture a product of your interest.
  • Describe a quality-control process for writing a technical report.
system definitions
System Definitions
  • An integrated set of equipment, computer program, facilities, human and logistical support resources, and procedures which are assembled to accomplish a single purpose or mission (NASA/CSS)
  • A composite of equipment, skills, and techniques capable of performing and/or supporting and operational role (Army)
  • A complete solution to a defined need(s) in its full environment over a prescribed lifetime (TRW)

Hardware

Software

Equipment

Technical Data

Facilities

Personnel

space mission architecture
Space Mission Architecture

Mission

Operations

Subject

Space

Mission

Concept

Space

Segment

(P/L+S/C)

Ground

Segment

Launch

Segment

Orbit and

Constellation

Command

Control &

Communications

Architecture

the space system
The Space System

Space System

Launch

Segment

Space

Segment

Ground

Segment

a typical space system
A Typical Space System

Space System

Launch

Segment

Space

Segment

Ground

Segment

Ground

Handling

Equipment

Airborne

Support

Equipment

Communi-

cation

Services

Data

Processing

Facility

Launch

Facility

Launch

Vehicle

Launch

Control

Flight

Operations

Spacecraft

what is the systems engineering
What is the Systems Engineering ?

The Orchestra Needs a Conductor and ...

what is the system engineering
What is the System Engineering?
  • A logical sequence of activities and decisions that transforms an operational need into a description of system performance parameters and a preferred system configuration. (MIL-STD-499A[5], Engineering Management, 1 May 1974. Now canceled.)
  • An interdisciplinary approach that encompasses the entire technical effort and evolves into and verifies an integrated and life-cycle balanced set of system people, products, and process solutions that satisfy customer needs. (EIA Standard IS-632, Systems Engineering, December 1994.)
  • An interdisciplinary, collaborative approach that derives, evolves, and verifies a life-cycle balanced system solution which satisfies customer expectations and meets public acceptability. (IEEE P1220, Standard for Application and Management of the Systems Engineering Process, [Final Draft], 26 September 1994.)
system acquisition
System Acquisition ?

System

Acquisition

Through the Maze to System Acquisition

systems engineering basic concept
Systems Engineering(Basic Concept)

Mission

(A Large Problem)

SYSTEMS ENGINEERING PROCESS

(TO BE DECOMPOSED INTO AN INTEGRATED SET OF SMALL PROBLEMS)

#1

#2

#3

#N

TO BE SOLVED & EFFECTIVELY MANAGED TO PRODUCE

AN

OPTIMIZED SOLUTION

system acquisition cycle

10-15 yr

1-5 yr

Testing &

Operations

National

Policy

4-8 yr

Mission

Needs

Determination

System

Development

SE

Technology

Development

Mission

Analysis

Concept

Definition

2-5 yr

2-5 yr

System Acquisition Cycle
  • Today’s pace systems are so complex that the time scale from inception to operation can be 10 to 20 years
  • System engineering participates in this “Womb-to-Tomb” process and provides to the program historical records of trade analyses, requirements traceability, performance verification, and system operations
system acquisition cycle nasa

SYSTEM

NEED

PAR

CONCEPT

DEFINION

SYSTEM

REQMTS

ANALYSIS

SRR

OPERATIONS &

MAINTENANCE

SYSTEM

ANAL &

DESIGN

SDR

SUBSYST

REQMTS

ANAL

ORR

SYSTEM

ACCEPT

S/SRR

SUBSYST

ARCH

DESIGN

CA

SYSTEM

I&T

SUBSYST

DETAIL

DESIGN

PDR

SUBSYST

I&T

SUBSYST

IMPLEMEN-

TATION

S/STR

TRR

CDR

System Acquisition Cycle (NASA)

ACRONYMS:

PAR - PROJECT APPROVAL REVIEW

SRR - SYSTEM REQUIREMENTS REVIEW

SDR - SYSTEM DESIGN REVIEW

S/SDR - SUBSYSTEM DESIGN REVIEW

PDR - PRELIMINARY DESIGN REVIEW

CDR - CRITICAL DESIGN REVIEW

TRR - TEST READINESS REVIEW

S/STR - SUBSYSTEM TEST REVIEW

STR - SYSTEM TEST REVIEW

CA - CONFIGURATION AUDIT

ORR - OPERATIONAL READINESS REVIEW

se role during development phases
SE Role During Development Phases

Program

Phase

Mission

Definition

SRR

SDR

PDR

Requirements

Development

Mission

Statement

Mission

Objectives

Mission

Area Analysis

System Concept

Development

Operations

Concept

Development

Technology

Development

RFP Preparation

System

Needs

Preliminary

Design

CDR

System Level

Design

Preliminary

Requirements

Mission Ops

Analysis

System

Architecture

Development

Requirement

Development

Verification

Planning

Detailed

Design

PSR

Requirements

Baseline

Preliminary

Design Below

System Level

System Design

Development

Requirements

Flowdown

Development

Specification

Production

and Test

Design

Baseline

Detailed

Design of

Total System

Design Review

and Monitoring

Fabrication

& Assembly

I&T

System Sell-off

Test Monitoring

& Verification

Post Launch

Support

System

Engineering

Role

Operation &

Maintenance

On-Orbit

Data Analysis

& System Ops

System Design

system engineering functions typical
System Engineering Functions (Typical)

SYSTEM

ENGINEERING

SYSTEM

DATA

PROCESSING

SYSTEM

DEFINITION

SYSTEM

ANALYSIS

SYSTEM

DESIGN

SYSTEM

VERIFICATION

SYSTEM

OPERATIONS

  • MISSION
  • DEFINITION
  • SYSTEM
  • REQUIREMENTS
  • FUNCTIONAL
  • DEFINITION/
  • ALLOCATION
  • REQUIREMENTS
  • ALLOCATIONS/
  • TRACEBILITY
  • SYSTEM/
  • SEGMENT
  • SPECIFICATIONS
  • SYSTEM
  • EFFECTIVENESS
  • MISSION AND
  • OPS ANALYSIS
  • PERFORMANCE
  • ANALYSIS
  • UTILITY
  • ANALYSIS
  • CONFIGURATION
  • DESIGN TRADES
  • INTERFACE
  • ENGINEERING
  • TECHNICAL
  • PERFORMANCE
  • MEASUREMENT
  • DESIGN REVIEW/
  • EVALUATION
  • RISK
  • MANAGEMENT
  • METHODOLOGY/
  • PLANS
  • VERIFICATION
  • REQUIREMENTS
  • ANALYSIS,
  • SIMULATION,
  • TEST PLAN
  • VALIDATION
  • AND
  • ACCEPTANCE
  • METHODOLOGY
  • DEVELOPMENT
  • PLAN AND
  • ARCHITECTURE
  • DATA
  • PROCESSING
  • REQUIREMENTS
  • INTERFACE
  • DEFINITION
  • AND CONTROL
  • DATA BASE/
  • DEFINTION
  • AND CONTROL
  • MISSION/
  • SYSTEM
  • OPERATIONS
  • CONCEPT AND
  • REQUIREMENTS
  • OPERATIONS
  • PLANS
  • PROCEDURES
  • VALIDATION
  • SIMULATION
  • AND TRAINING
  • PLANS
  • INTEGRATED
  • LOGISTICS
  • PLANS
system hierarchy
System Hierarchy

SYSTEM

FORMOSAT-1

  • One project’s system is another
  • project’s component

SEGMENT

SPACE/GROUND

TYPICAL SOFTWARE

NOTATION

ELEMENT

SPACECRAFT/PAYLOAD

SUBSYSTEM

SUBSYSTEM

EPS/TT&C

INTEGRATED

CSCIs

COMPONENT

COMPONENT

CSCI

BATTERY/ANTENNA

SUBASSEMBLY

MODULE

EXAMPLE

CSU

PART

PROCEDURE/ROUTINE

CU

HARDWARE

SOFTWARE

holistic thinking versus local thinking
Holistic Thinking versus Local Thinking…

Innovation Associates

0943-98

22

systems engineering process models1
Systems Engineering Process Models
  • Software System
    • Waterfall Model
    • Spiral Model
  • Enterprise System
    • Vee Model
    • Typical SE Model
    • SIMILAR
    • ANSI/EIA 632
waterfall model
Waterfall Model

By Royce in 1970

spiral model
Spiral Model

By Boehm in 1988

vee model
Vee Model

By Forberg and Mooz in 1992

typical systems engineering process
Typical Systems Engineering Process

SE management guide, DSMC, Jan 1990

similar process
SIMILAR Process

By Bahill and Gissing in 1998

se process in ansi eia 632
SE Process in ANSI/EIA 632

ANSI: American National Standards Insitute

EIA: Electronic Industries Alliance

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