Diapositive 1

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1st NeCST Workshop, Ajaccio, 6-7 October 2005

• Networked Control Systems Tolerant to faults
• FP6-IST-STREP Project
• E. RONDEAU
• CRAN-UMR 7039 CNRS-UHP-INPL

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1st NeCST Workshop, Ajaccio, 6-7 October 2005
NeCST project Overview

• NeCST Networked Control Systems Tolerant to
  Faults
• STREP Project
• IST - Embedded Systems
• Contract n IST 2004 004303
• Start date of project 1 August 2004
• Duration 3 years
• Total Budget 2M
• Eligible costs 1.2 M
• www.strep-necst.org

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1st NeCST Workshop, Ajaccio, 6-7 October 2005
NeCST project Overview

• ? Project Coordinator E. Rondeau (UHP, France)
• ? Contractors
• University Henri-Poincaré, Nancy 1 (UHP, France)
  (Leader D. Sauter)
• Helsinki University of Technology (HUT, Finland)
  (Leader SL Jämsä-Jounela)
• University of Duisburg-Essen (UNIDE, Germany)
  (Leader S. Ding)
• University of Hull (UHULL, UK) (Leader R.
  Patton)
• NESTE JACOBS Oy (NESTE, Finland) (Leader M.
  Sourander)
• PREDICT (PREDICT, France) (Leader J.B. Léger)
• SAE Automation (SAE, Slovakia) (Leader V.
  Palacka)

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1st NeCST Workshop, Ajaccio, 6-7 October 2005
NeCST project Overview
- The aim of the project is to explore research
opportunities in the direction of distributed
control systems in order to enhance the
performance of diagnostics and fault tolerant
control systems. - Conventional Fault Detection
and Isolation (FDI) / Fault Tolerant Control
(FTC) and Autonomy theories, with their ideal
assumptions such as synchronised control, non
delayed sensing and actuation, must be adapted to
the new paradigm of NeCS.
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1st NeCST Workshop, Ajaccio, 6-7 October 2005
NeCST project Overview
? FDI/FTC Conceptual Model
Evaluation
Fault Detection
Accommodation
Application Model
Reconfiguration
Application
Degradation
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1st NeCST Workshop, Ajaccio, 6-7 October 2005
NeCST project Overview
? FDI/FTC Conceptual Model For Distributed
Systems
Delay
Failure
Evaluation
Fault Detection
Accommodation
Remote Application Model
Reconfiguration
Remote Application
Degradation
Remote measures and Remote compensations generate
- Missing values - Delays, Jitters - Clock non
synchronization
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1st NeCST Workshop, Ajaccio, 6-7 October 2005
NeCST project Overview
? FDI/FTC Conceptual Model OVER NETWORK
Network
Evaluation
Fault Detection
Accommodation
Remote Application Model
Reconfiguration
Remote Application
Degradation

• Network generates
• - Management traffic (ARP, STP, SNMP,)
• - Route optimization (RIP,)
• Protocols with self adaptation mechanisms (TCP)
• Correlation between delay missing messages
  (TCP)
• Encapsulation fragmentation of messages,

Remote measures and Remote compensations generate
- Missing values - Delays, Jitters - Clock non
synchronization

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1st NeCST Workshop, Ajaccio, 6-7 October 2005
NeCST project Overview
? FDI/FTC Conceptual Model OF NETWORK
Evaluation
Fault Detection
Accommodation
Network Model
Reconfiguration
Network
Degradation

• Compensation on the network
• - Accommodation Priority, Scheduling policy,
  load balancing
• - Reconfiguration protocols, network
  architecture
• Degradation Message Inter arrival, traffic
  smoothing, drop packets,

Network Measure - Network instrumentation Networ
k Model - Queuing model, Network calculus
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1st NeCST Workshop, Ajaccio, 6-7 October 2005
NeCST project Overview
? NeCST Conceptual Model
Evaluation
Fault Detection
QoS
Network Model
Accommodation
Network
QoS
Reconfiguration
Remote Application Model
Degradation
Remote Application
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1st NeCST Workshop, Ajaccio, 6-7 October 2005
Goal To coordinate the Local and Global FDI/FTC
models in taking into account the network QoS
NeCST project Overview
? NeCST Conceptual Model and EMBEDDED SYSTEMS
Evaluation
Fault Detection
Network Model
Accommodation
Network
Reconfiguration
Remote Application Model
Degradation
Remote Application
Network Devices
Embedded Components
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1st NeCST Workshop, Ajaccio, 6-7 October 2005
NeCST project Overview
How to evaluate NeCST models ?
NS (M.S. Branicky, 2003)
TrueTime (Matlab) (M. Andersson, D. Henriksson,
A. Cervin, 2005)
PN (Juanole, Blum, 1999)
NC (JP Georges, 2005)
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1st NeCST Workshop, Ajaccio, 6-7 October 2005
NeCST project Overview
NeCST SIMULATION PLATFORM
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1st NeCST Workshop, Ajaccio, 6-7 October 2005
NeCST project Overview
NeCST EXPERIMENTAL PLATFORM
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1st NeCST Workshop, Ajaccio, 6-7 October 2005
NeCST project Overview
WP3 FDI/FTC in a distributed framework (UNIDE)
WP2 User Requirements (HUT)
WP4 Autonomous operating conditions (UHULL)
WP5 Communication design and management (UHP)
WP8 Application to an industrial petroleum oil
refinery (NESTE)
WP7 Communication design tool (SAE)
WP6 Distributed software design (PREDICT)
WP10 Exploitation strategies and dissemination
(PREDICT)
WP9 Project assessment (UHP)
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1st NeCST Workshop, Ajaccio, 6-7 October 2005
NeCST project Overview
- Remark The majority of works on NeCS studies
the temporal and stability properties of
application But NeCS need to have global
operator interfaces collecting both process and
network information Problems of NeCS
information systems, Pertinence of Network
information for the process,
NeCS Information System
Process Interface
Network Interface
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1st NeCST Workshop, Ajaccio, 6-7 October 2005
Challenges of networked control systems
autonomy, reconfiguration and plug-and-play
R.J. Patton, C. Kambhampati, F.J. Uppal,
University of Hull, UK Decentralized and
Autonomous Design for Fault Diagnosis of
Networked Control Systems D. Sauter, T.
Boukhobza, F. Hamelin, University Henri Poincaré,
CRAN, France Observer-based monitoring of
distributed networked control systems S.X.
Ding, P. Zhang, University of Duisburg-Essen,
Germany Observer based FDI/FTC R. Ylinen,
Helsinki University of Technology, Finland FDI
in model predictive control of an industrial
dearomatisation process T. Liikala, M.
Sourander, L. Hammarström, Neste Jacobs Oy,
Finland Classification of service for networked
control systems J.-P. Georges, E. Rondeau, T.
Divoux, University Henri-Poincaré, Nancy,
France Multi-RED controller for router
accommodationK. Menighed, C. Join, C. Aubrun,
University Henri-Poincaré, Nancy, France Data
based fault detection of the online analysers in
a dearomatisation processM. Vermasvuori, N.
Vatanski, S.L. Jamsa-Jounela, Helsinki University
of Technology, Finland
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1st NeCST Workshop, Ajaccio, 6-7 October 2005