Dr. Nizar CHATTI

Associate Professor

Head of pedagogical innovation

Directeur de l'innovation pédagogique

Maître de conférences, section CNU 61

Automatic control & computer engineering

SUMMARY

Nizar CHATTI was born in 1985. Since september 2014, he is associate professor in the public engineering school ISTIA (University of Angers) and researcher in LARIS laboratory EA 7315. From January 2014 until July 2014, He was post-doctoral researcher within an industrial project with Airbus (EYCCC Flight Control System TIP Control - FDIR Task (Airbus Operations S.A.S, Toulouse) and the laboratory IMS Bordeaux (ARIA team). This project aimed to propose and to implement model-based diagnosis approaches on the EFCS (Electrical Flight Control System) for detecting faults related to the moving surfaces of the A320 Aircraft. Nizar CHATTI is Ph.D in Automatic control and computer engineering. He received his Engineering degree in Automatics and industrial data processing in 2009, a M.Sc. in Automatic control, computer engineering and Image processing at Ecole Centrale de Lille, France in 2010. He fulfilled his Ph.D degree at the LAGIS laboratory (Polytech-Lille), Villeneuve d’Ascq, France. He was also a member of the European project InTraDE (Intelligent Transportation for Dynamic Environment) and he was working in the WP3A6 which aimed to develop new algorithms for robust supervision and to investigate practical issues in implementing automatic navigation methods in container terminals. His research within the framework of InTraDE concerned diagnosis and supervision of complex systems applied for intelligent transportation and mechatronics Processes by dealing with multi-model approaches namely functional and behavioural ones. He is the author of several papers in this field. He was also teaching Automatic control, Electronics... within the French University IUT in Lille1, France. He worked on modelling and model-based diagnosis of an electrical vehicle and a PEM fuel cell system as applications for his developed algorithms.

EDUCATION

  • 2013 : PhD in Automatic control and computer engineering, Polytech'Lille, University of Lille 1, France.

  • 2010 : M. Sc. in Automatic control, computer engineering and signal processing, Ecole Centrale de Lille, France.

WORK

  • Sept. 2014-Current: Associate professor in the French public engineering school ISTIA, University of Angers, France. My research activities are carried out within the LARIS Lab EA7315, ISTIA, France.

  • Jan. 2014-July 2014: Post-doctoral Researcher in IMS Lab (Bordeaux, France) within an industrial project with Airbus

  • 2011-2013: Teaching assistant in GEII department, in the Institute of Technology IUT of Lille1, University of Lille1, France.

RESEARCH

I am particularly interested in diagnosis and monitoring problems arising in vehicular technology, robotics and industrial plants, including (but not limited to) the problems of faults detection and isolation and possibilities of reconfiguration as well as supervision of intelligent and autonomous systems to meet the requirements set on efficiency, reliability and safety. My research interests center on developing model-based diagnosis algorithms based on qualitative and quantitative modeling within an integrated approach dedicated for monitoring tasks of dynamic systems. Within this scope, I proposed the Signed Bond Graph (SBG) formalism which extends the use of Bond Graphs to include qualitative reasoning by dealing with its structural and causal features as well as solution methods (Graph theory, decomposition methods...) in order to address multiple faults occurrence issues. I am also investigating the use of set-membership formalism and interval analysis approaches to deal with robustness against parameters and measurements uncertainties during the detection step by enhancing the decision making procedure. I have also developed monitoring strategies for robust and early detection of abnormal positions on aircraft control surfaces by dealing with parameters estimation approach.



PhD THESIS SUPERVISION

  • K. TIDRIRI (Sep. 2015- present): Combining quantitative and qualitative modeling within an integrated approach dedicated for monitoring tasks of dynamic systems

  • I am co-supervising this thesis with S. Verron and T. Tiplica. The thesis defense is expected by the end of 2018. The proposed research work aims to develop a unified approach for dynamic systems integrated design within monitoring context. A first part is devoted to study the possibilities to develop a generic method that may enable to integrate data-driven approaches within the framework of the BRIDGE community. This work consists on proposing an original strategy by dealing with the tools and techniques that are used within the LARIS laboratory namely the Bond Graph approach and the Dynamic Bayesian network formalism. The second part of the proposed research work consists on exploiting the results emanating from the first part in order to address the prognostic tasks by focusing on the analogy that has been considered within the BRIDGE community when dealing with detection/diagnosis tasks.

    DESCRIPTION OF PREVIOUS EXPERIENCES

    • Post-doctoral position

      My project (within the post-doctoral position) consisted on proposing robust fault detection strategies related to aircraft moving surfaces. Within this scope, a generic parametric strategy was proposed to deal with runaway failure case (a.k.a hardover) of aircraft control surfaces. A runaway is an uncontrolled deflection of a control surface which can go until its stops if it remains undetected. The methodology relied on a basic level which consists in parametric model estimation and decision test in parametric space, and a secondary level which is a bias estimator to improve the performance of fault detection. The proposed monitoring strategy is applicable to different kind of actuators as the method was based basically on black-box modeling and used no physical model of the actuator servo-control loop. The overall strategy satisfied technical requirements in terms of false decisions and detection time and it was implemented on a hydraulic actuator benchmark for real time fault detection and confirmation.

    • PhD Thesis

      • Context: LAGIS-European project InTraDE (Intelligent transportation for Dynamic Environment)

      • Location: Lille (France)

      • Trainings and demonstrations: Liverpool UK (John Moores University, LOOM team), DIT (Dublin Institute of Technology).

      • Team: MOCIS (Methods and Tools For Embedded Systems Design)


      • Research issues:

        • Model-based diagnosis (FDI and DX approaches)

        • Diagnosis of single and multiple faults for continuous dynamic systems

        • Developing a global diagnosis strategy for the operating modes management in both normal and abnormal situations

        • Contribution to the supervision of dynamic systems using Signed Bond Graph

      • PROJECT DETAILS:

        InTraDE (Intelligent Transportation for Dynamic Environment is a European project which contributed in designing a new concept of Intelligent Autonomous Vehicles, able to handle and routing autonomously the freight transport in confined spaces of regional ports from North West Europe. The technological challenge issued from InTraDE consisted on proposing a safe, clean and efficient transport system which can easily be adapted to the existing port infrastructure, using different piloting modes. The aim is to improve significantly the traffic flow and the port logistics using sustainable solutions. My task within this project was to develop new methods and algorithms for robust supervision and to investigate model-based approaches for diagnosis.

    TEACHING

    I am teaching in the public engineering school ISTIA (different levels, from the 2nd to the 5th year). Basically, my courses are devoted to automatic control, programming, PLC, micro-controllers and safety of engineering systems. I belong and I carry out my courses within three departments namely (1) automatic control and computer engineering and (2) Quality and safety of systems and (3) innovative engineering. Most of the courses are taught in French. I hereby indicate a list (of some) of my courses:

    • Automatic control (Taught in English)
    • Programming of microcontrollers
    • PLC programming (Taught in English)
    • Data base, MERISE methodology
    • SQL language
    • Electronics
    • Mechanics
    • Computer Aided Simulation
    • Modeling of Mechatronic systems (Taught in English)
    • Safety of engineering systems

    INTERNATIONAL COLLABORATIONS

    • Invited professor in the LNMIIT (Engineering school in Jaipur, INDIA), February 2017

    • Program commitee member of the Sixth International Conference on Software Engineering and Applications, SEA-2017

    • Program commitee member of the International Conference SOEA-2017

    • Departmental coordinator within the framework of a bilateral agreement with the University of Wels, Austria (2016, 2017)

    OTHER ACTIVITIES

    • Head of Innovation in Teaching and Learning service (ISTIA, 2017)

    • Supervising groups of engineering degree and Master degree students (ISTIA, department of quality and safety engineering)

    • Supervising groups of Master degree students (University of Lille1, 2012/2013)

    • Coordinating training sessions: they were devoted to fault detection strategies on IAV systems and online simulation (the sessions were held in Liverpool John Moores University and Dublin Institute of Technology), 2012, 2013.

    • Co-organization of different technical meetings (Lille, Liverpool, Dublin), 2012, 2013

    • Co-organization of the first regional day of automatics JRDA'12 which was held in IUT of Lille1 the 6th December 2012.

    • Ad-hoc Reviewer, Journal of Applied Research and Technology

    • Ad-hoc Reviewer, Journal IEEE Transactions on Vehicular Technology

    • Ad-hoc Reviewer, European Control Conference

    • Ad-hoc Reviewer, International Conference on Systems and Control

    • Ad-hoc Reviewer, Mediterranean Conference on Control and Automation

    • Ad-hoc Reviewer, International Conference on Control, Decision and Information Technologies

    • Ad-hoc Reviewer, World Congress of the International Federation of Automatic Control

    • Ad-hoc Reviewer, European Workshop on Advanced Control and Diagnosis

    • Ad-hoc Reviewer, International Conference on Control and Fault-Tolerant Systems

    PUBLICATIONS

    Okina

    Researchgate

    Google Scholar

    • Journal papers

      1. M.-S. Jha, N. Chatti, P. Declerck. Robust fault detection in bond graph framework using interval analysis and Fourier-Motzkin elimination technique. Mechanical Systems and Signal Processing (IF: 2.771), vol. 93, pages 494–514, 2017

      2. K. Tidriri, N. Chatti, S. Verron, T. Tiplica. Bridging data-driven and model-based approaches for process fault diagnosis and health monitoring: A review of researches and future challenges, Annual Reviews in Control (IF: 2.042), vol.42, pages 63–81, 2016

      3. N. Chatti, R. Guyonneau, L. Hardouin, S. Verron, S. Lagrange. Model-based approach for fault diagnosis using setmembership formulation, International journal of Engineering Applications of Artificial Intelligence (IF: 2.368), pages 307-319, vol. 55, 2016.

      4. N. Chatti, B. Ould-Bouamama, A.-L. Gehin, R. Merzouki. Signed Bond Graph for multiple faults diagnosis. IFAC Engineering Applications of Artificial Intelligence (IF: 2.368), pages 134-147, 2014.

      5. N. Chatti, A.-L. Gehin, B. Ould-Bouamama, R. Merzouki. Functional and behavioural models for the supervision of an intelligent and autonomous system. IEEE Transactions on Automation Science and Engineering (IF: 2.696), pages 431-445, issue2, vol.10, 2013.

    • Book chapters
      1. N. Chatti, A.-L. Gehin and B. Ould-Bouamama. Chapter 8 : Robust fault decision : Contribution to Omni directional Mobile Robot. Mechatronic and Innovative Applications, pages 147-167 (21), DOI : 978-1-60805-441-1 eISBN : 978-1-60805-441-1 ISBN :978-1-60805-440-4.

      2. B. Ould-Bouamama, N. Chatti and A.-L. Gehin,SBG for health Monitoring of Fuel Cell System, ICREGA’14-Renewable Energy: Generation and Applications, Springer International Publishing, pages 73-85, 2014.

    • Conference papers
      1. K. Tidriri, N. Chatti, S. Verron, T. Tiplica. Intégration de modèles quantitatifs et qualitatifs pour le diagnostic des systèmes dynamiques. Journée des doctorants (JDOC'2017), Nantes, 2017

      2. K. Tidriri, N. Chatti, S. Verron, T. Tiplica. Fusion de modèles quantitatifs et qualitatifs pour le développement d’une approche intégrée dédiée à la surveillance des systèmes dynamiques. Séminaire Doctoral International Francophone, Angers, 2017.

      3. K. Tidriri, N. Chatti, S. Verron, T. Tiplica. A Bond Graph Modeling for Health Monitoring and Diagnosis of the Tennessee Eastman Process. IEEE International Conference on Control, Decision and Information Technologies. Barcelone. pages 1-6, 2017.

      4. N. Chatti, R. Guyonneau, L. Hardouin. Diagnostic à base de modèles et aide à la prise de décision robuste par une approche ensembliste. 10ème Colloque sur la Modélisation des Systèmes Réactifs (MSR), Nancy, 2015.

      5. N. Chatti, A.-L. Gehin, B. Ould-Bouamama, R. Merzouki and Y. Touati. Bond Graph Model Based and Fuzzy Logic For Robust FDI of Mechatronic Systems. International Conference Safe Process IFAC, pages 126-131 August 29-31, 2012, Mexico City, Mexico.

      6. N. Chatti, A.-L. Gehin, B. Ould-Bouamama, R. Merzouki. Online Supervision of Intelligent Vehicle using functional and behavioural models. IEEE Intelligent Vehicle Symposium, pages 827-832, June 5-9, 2011, Baden-Baden, Germany.

      7. N. Chatti, B. Ould-Bouamama, A.-L. Gehin and R. Merzouki. Merging Bond Graph and Signed Directed Graph to improve FDI procedure. The 12th biannual European Control Conference ECC 2013, July 17-19, 2013, Zurich, Switzerland.

      8. N. Chatti, B. Ould-Bouamama, A.-L. Gehin and R. Merzouki. Signed Bond Graph for health monitoring of PEM fuel cell. The 5th International Conference on Fundamentals and Development of Fuel Cells, April 14-18, 2013, Karlsruhe, Germany.

      9. N. Chatti, W. Khalil, A-L. Gehin, B. Ould-Bouamama and R. Merzouki. Intelligent Supervision Of Autonomous Heavy Vehicles: Application To Maritime Area. The 13th International Conference on Harbor, Maritime and Multimodal Logistics Modeling and Simulation, pages 33-37, September 12-15, 2011, Rome, Italy.

      10. N. Chatti, A.-L. Gehin, B. Ould-Bouamama and R. Merzouki. Contribution à la prise de décision robuste pour la détection de défauts : Application à un robot omnidirectionnel. 13ème Colloque AIP PRIMECA. 27-30 Mars, 2012, Mont-Dore, France.

      11. N. Chatti, A.-L. Gehin, B. Ould-Bouamama and R. Merzouki. Modèles de comportement et fonctionnel pour la supervision d'un système autonome. 4èmes Journées Doctorales / Journées Nationales MACS. Juin 9-10, 2011. Marseille, France.

    • Industrial reports
      1. N. Chatti, J. Cieslak, A. Zolghadri, A Generic Monitoring Strategy for Robust and Early Detection of Abnormal Positions in Aircraft Control Surfaces, 2014.

    CONTACT

    Work Address:

    62 avenue Notre Dame Du Lac, ISTIA, Office E38, Angers 49000, FRANCE.

    Tel:

    02.44.68.75.73

    e-mail:

    nizar.chatti@univ-angers.fr

    Last update June.06.17