Download A Framework for System of Systems Tradespace Exploration

A Framework for System of Systems
Tradespace Exploration
Biography
Debarati Chattopadhyay is a graduate student at MIT pursuing a
Masters degree in Aeronautics and Astronautics. Debarati has B.S.
degrees in Computer Engineering (2005) and Astrophysics(2004)
from Lehigh University. She has worked in mission operations for the
Chandra X-ray Observatory at the Harvard-Smithsonian Center for
Astrophysics.
Related Publications
Debarati Chattopadhyay, SM in Aeronautics and Astronautics (expected June 2009)
Chattopadhyay, D., Ross, A.M., and Rhodes, D.H., “A Framework for Tradespace
Exploration of Systems of Systems”, 6th Conference on Systems Engineering
Research, Los Angeles, CA, April 2008.
Advisors: Dr. Donna Rhodes, Dr. Adam Ross
What is a SoS?
Research Questions
A system-of-systems (SoS) is a set of collaboratively integrated systems that possess two additional
properties: operational independence of the components and managerial independence of the
components. (Maier 98)
SoS is defined as a set or arrangement of systems that results when independent and useful
systems are integrated into a larger systems that delivers unique capabilities. (DoD 2004)
Coordinating Observatories
Multi-Concept Responsive
Disaster Surveillance
Proposed Framework for SoS Tradespace
Exploration
1. What are the characteristics that distinguish SoS design from
traditional system design?
2. What is a practical framework for SoS tradespace exploration?
Generate SoS
Tradespace
3. How can the developed tradespace exploration framework be
used to select SoS designs that are value robust through the
SoS lifetime?
SoS Tradespace
SoS DV
Legacy Systems
SoS Mission
SoSA
SoSB
SoSC
New Systems
SoS Specific Considerations
HST
SoS Attributes
Estimate of Managerial
Control and Influence
Level of Each Component
Chandra
Effective Managerial Authority
Aircraft
Satellite
UAV
Revise Estimates
SoS
User
Motivation
• System of Systems design requires sophisticated decision making under high
uncertainty to ensure selection of designs that maintain value over the
operational lifetime
component
system
component
system
local
stakeholder
s
Dynamic Epoch-Era
Analysis
Influence
local
stakeholder
s
Gap
Incentive Plan for
Select Value
Robust
Design
System Era
U
T1
T2
T3
Tn
Epoch 1
Epoch 2
Epoch 3
Epoch n
global stakeholders
0
1
Likelihood of Participation
• A quantitative method is necessary to compare SoS design alternatives and
understand the tradeoffs between diverse stakeholder preferences.
S1,e S2,b
Legacy and New Systems
New
Systems
Legacy
Systems
New
Systems
Legacy
Systems
Legacy Components
New
Design New Systems
and Interfaces
S2,e S3,b
S3,e
Sn,b
Time
Epoch
Static Tradespace for Each
Type of Context
Era
String of epochs
Time-Varying Available Component Sets
Legacy
Systems
Legacy
…
0
S1,b
Local and Global
Stakeholder Sets
Design of future SoS will require quantitative concept exploration
methods to improve SoS selection decisions
cost
component
system
Managerial Control
(MC)
local
stakeholder
s
utility
Interfaces
Sn,e
Implementation
Context Change
New
Systems
Dynamic Composition
References
Anticipated Contributions
• Validate Dynamic Multi-Attribute Tradespace Exploration (MATE) as a basis
for a framework for SoS tradespace exploration
• Provide a framework for testing SoS design heuristics suggested in literature
© 2008 Massachusetts Institute of Technology
Consider managerial
authority during SoS
design
Study SoS value delivery
over time, accounting for
dynamic composition
Maier, M.W., "Architecting Principles for Systems-of-Systems", Systems Engineering, Vol. 1, No.
4, pp. 267-84, 1998.
...
Switching
Cost
SoSA
SoSB
component
systems
SoSN
DoD, "4.2.6. System of Systems Engineering," In Defense Acquisition Guidebook, Department of
Defense, 2004.
Time
T1
T2
TN
For more information, please visit:
http://seari.mit.edu
Ross, A.M., and Rhodes, D.H., "Architecting Systems for Value Robustness: Research Motivations
and Progress," Annual IEEE Systems Conference, Montreal, Canada, April 2008.