Research

Major interests

• Sampled-Data Control and Networked / Embedded Control Systems

• Time-Delay Systems

• Hybrid Systems

• Nonlinear Control and Observation

• Machine Learning

Participation to research projects

• H2020 "Understanding and Controlling of Complex Systems" (UCoCoS) - 2016~2020

• ANR JC-JC "Robust Control of Cyber-Physical Systems" (ROCC-SYS) - 2014~2018

• FP7 NoE "Highly-complex and networked control systems" (HYCON2) - 2010~2014

Supervision

• PhD

  • Ghania Khodja (2021~), co-supervised with Thierry Floquet
    Thesis: Switching devices in large scale networks: a sliding mode dynamics perspective

  • Xinyong Wang (2018~2022), co-supervised with Laurentiu Hetel and Ying Tang.
    Thesis: Contributions to the study of sampled-data hyperbolic systems

  • Abbas Tariverdi (2017~interrupted), co-supervised with Lotfi Belkoura.
    Thesis: Event-triggered and self-triggered control of dynamical systems.
    Interrupted because of personal/family reasons

  • Ayush Kumar Jain (2017~2021), co-supervised with Denis Berdjag and Philippe Polet.
    Thesis: Investigating stability of driver-train system under aperiodic sampling measurements
    Now a planning/control researcher at 2getthere, a company of ZF, Utrecht, The Netherlands.

  • Jijju Thomas (2017~2021), co-supervised with Jean-Pierre Richard, Laurentiu Hetel, Henk Nijmeijer, and Nathan van de Wouw.
    Thesis: Networked dynamical systems: an input-output approach towards stability.
    Now a design engineer within the development and engineering department at ASML, Veldhoven, The Netherlands. 

  • Zohra Kader (2014~2017), co-supervised with Laurentiu Hetel and Lotfi Belkoura.
    Thesis: Control and observation of switched affine systems (Preprint).
    Now an assistant professor at Institut National Polytechnique of Toulouse - Laplace laboratory, Toulouse, France.

• MSc

  • Zaid Ousaghda (2017).
    Subject: Stabilization of sampled-data systems with distributed sensors using dynamic scheduling sequences.

  • Taki-Eddine Korabi (2016), co-supervised with Laurentiu Hetel.
    Subject: Stability analysis of LTI systems with distributed sensors and aperiodic sampling.

  • Sonia Maalej (2011), co-supervised with Laurentiu Hetel and Jean-Pierre Richard.
    Subject: Task scheduling - variable sampling control.

Publications

Journal publications

1. Ghania Khodja, Christophe Fiter, Laurentiu Hetel, Thierry Floquet
   Local stabilization conditions for discrete-time switched affine systems
   Automatica (Accepted for publication)

2. Ying Tang, Christophe Fiter, Laurentiu Hetel
   A study on switched affine systems interconnected with fast LTI dynamics
   Automatica, 160 - 111462 , 2024
   (Link)

3. Xinyong Wang, Ying Tang, Christophe Fiter, Laurentiu Hetel
   Sampled-data distributed control for a class of hyperbolic system with spatially sampled state measurements
   Automatica, 139 - 110183, 2022
   (Link)

4. Deesh Dileep, Christophe Fiter, Laurentiu Hetel, Wim Michiels
   A scalable method for the analysis of networked linear systems with decentralized sampled-data control
   International Journal of Robust and Nonlinear Control, 32(6): 3293-3313 , 2022
   (Link)

5. Jijju Thomas, Christophe Fiter, Laurentiu Hetel, Nathan van de Wouw, Jean-Pierre Richard
   Dissipativity-based framework for stability analysis of aperiodically sampled nonlinear systems with time-varying delay
   Automatica, 129 - 109632, 2021 - Regular paper
   (Link - Preprint)

6. Jijju Thomas, Christophe Fiter, Laurentiuu Hetel, Nathan van de Wouw, Jean-Pierre Richard
   Frequency-domain stability conditions for asynchronously sampled decentralized LTI systems
   Automatica, 129 - 109603 , 2021 - Regular paper
   (Link - Preprint)

7. Zohra Kader, Christophe Fiter, Laurentiu Hetel, Lotfi Belkoura
   Stabilization by a relay control using non-quadratic Lyapunov functions
   Automatica, 97: 353-366, 2018 - Regular paper
   (Link - Preprint)

8. Ion Victor Gosea, Mihály Petreczky, Athanasios C. Antoulas, Christophe Fiter
   Balanced truncation for linear switched systems
   Advances in Computational Mathematics, 44(6): 1845-1886, 2018
   (Link - Preprint)

9. Zohra Kader, Christophe Fiter, Laurentiu Hetel, Lotfi Belkoura
   Stabilization of switched affine systems with disturbed state-dependent switching
   International Journal of Robust and Nonlinear Control, 28(2): 582-595, 2018
   (Link - Preprint)

10. Laurentiu Hetel, Christophe Fiter, Hassan Omran, Alexandre Seuret, Emilia Fridman, Jean-Pierre Richard, Silviu Iulian Niculescu
    Recent developments on the stability of systems with aperiodic sampling: an overview
    Automatica, 76: 309-335, 2017 - Survey paper
    (Link - Preprint)

11. Christophe Fiter, Laurentiu Hetel, Wilfrid Perruquetti, Jean-Pierre Richard
    A robust stability framework for LTI systems with time-varying sampling
    Automatica, 54: 56-64, 2015
    (Link - Preprint)

12. Christophe Fiter, Laurentiu Hetel, Wilfrid Perruquetti, Jean-Pierre Richard
    A state dependent sampling for linear state feedback
    Automatica, 48(8): 1860-1867, 2012
    (Link - Preprint)

13. Christophe Fiter, Laurentiu Hetel, Wilfrid Perruquetti, Jean-Pierre Richard
    Échantillonnage dépendant de l’état pour les systèmes avec perturbations et retards
    Journal Européen des Systèmes Automatisés, special number 45(1-2-3), Modélisation des Systèmes Réactifs, 189-203, Hermes-Lavoisier, 2011
    Proceedings of MSR'11
    (Link - Preprint) - in French

14. Louis Chatriot, Guillaume Chaslot, Christophe Fiter, Sylvain Gelly, Jean-Baptiste Hoock, Julien Perez, Arpad Rimmel, Olivier Teytaud
    Combiner connaissances expertes, hors-ligne, transientes, et en ligne pour l'exploration Monte-Carlo
    Revue d'Intelligence Artificielle, 23(2-3): 203-220, 2009
    (Link - Preprint) - in French

Book chapters

1. Christophe Fiter, Taki-Eddine Korabi, Lucien Etienne, Laurentiu Hetel
   Stability of LTI systems with distributed sensors and aperiodic sampling
   Control Subject to Computational and Communication Constraints: Current Challenges, Lecture Notes in Control and Information Sciences, 475, 63-82, Springer, 2018
   Editors: Sophie Tarbouriech, Antoine Girard, Laurentiu Hetel
   (Link - Preprint)

2. Christophe Fiter, Laurentiu Hetel, Wilfrid Perruquetti, Jean-Pierre Richard
   State-dependent sampling for online control
   Low-Complexity Controllers for Time-Delay Systems, ADD@S (Advances in Delays and Dynamics at Springer), 2, 3-16, Springer, 2014
   Editors: Alexandre Seuret, Hitay Özbay, Catherine Bonnet, Hugues Mounier
   (Link - Preprint)

3. Guillaume Chaslot, Christophe Fiter, Jean-Baptiste Hoock, Arpad Rimmel, Olivier Teytaud
   Adding expert knowledge in Monte-Carlo Tree Search
   Lecture Notes in Computer Science, 6048, Theoretical Computer Science and General Issues, 1-13, Springer, 2010
   Proceedings of ACG'09
   (Link - Preprint)

Conference publications

1. Ghania Khodja, Christophe Fiter, Laurentiu Hetel, Thierry Floquet
   Local practical stabilization for a class of discrete-time switched affine systems
   COSY'22 - 1st IFAC Workshop on Control of Complex Systems, 55(40): 31-36, Bologna, Italy, November 2022
   (Link)

2. Ying Tang,  Christophe Fiter, Laurentiu Hetel
   About switched affine system interconnected with fast LTI dynamics
   ROCOND'22 - 10th IFAC Symposium on Robust Control Design, 55(22): 67-72, Kyoto, Japan, August-September 2022
   (Link)

3. Xinyong Wang, Ying Tang, Christophe Fiter, Laurentiu Hetel
   A hybrid system approach to exponential stability with sampled-data control for a class of linear hyperbolic systems
   ADHS'21 - 7th IFAC Conference on Analysis and Design of Hybrid Systems, 54(5): 133-138, Brussels, Belgium, July 2021
   (Link - Preprint)

4. Xinyong Wang, Christophe Fiter, Ying Tang, Laurentiu Hetel
   Sampled-data control for a class of linear hyperbolic system via the Lyapunov-Razumikhin technique
   ECC'21 - 20th European Control Conference 162-167 , Rotterdam, The Netherlands, June-July 2021
   (Link - Preprint)

5. Ayush Kumar Jain, Denis Berdjag, Christophe Fiter, Philippe Polet
   Stability of neural-network based train cruise advisory control with aperiodical measurements
   CESCIT'21 - IFAC Conference on Embedded Systems, Computational Intelligence and Telematics in Control 54(4): 92-97, Valenciennes, France, June 2021
   (Link)

6. Jijju Thomas, Eric Steur, Christophe Fiter, Laurentiu Hetel, Nathan Van De Wouw
   Exponential synchronization of nonlinear oscillators under sampled-data coupling
   CDC'20 - 59th IEEE Conference on Decision and Control, 1824-1829, Jeju Island, Republic of Korea, December 2020
   (Link - Preprint)

7. Ayush Kumar Jain, Christophe Fiter, Denis Berdjag, Philippe Polet
   Investigating stability for driver advisory train cruise control system with aperiodically sampled measurements
   ITSC'20 - 23rd IEEE International Conference on Intelligent Transportation Systems, 1-6, Rhodes, Greece, September 2020
   (Link)

8. Jijju Thomas, Eric Steur, Laurentiu Hetel, Christophe Fiter, Jean-Pierre Richard, Nathan van de Wouw
   An input-output approach towards synchronization under communication constraints
   ENOC'20 - 10th European Nonlinear Dynamics Conference, Lyon, France, July 2020 (postponed to 2021)

9. Xinyong Wang, Ying Tang, Christophe Fiter, Laurentiu Hetel
   Stability analysis for a class of linear hyperbolic system of balance laws with sampled-data control
   IFAC WC'20 - 21st IFAC World Congress, 53(2): 3608-3613, Berlin, Germany, July 2020
   (Link - Preprint)

10. Ayush Kumar Jain, Christophe Fiter, Denis Berdjag, Philippe Polet
    Exponential stability criteria for neural network based control of non-linear systems
    ACC'20 - American Control Conference, 1631-1636, Denver, Colorado, USA, June 2020
    (Link)

11. Lucien Etienne, Koffi M. Djidula Motchon, Christophe Fiter
    Investigating new classes of sampling sequences: Application to the stability analysis of decentralized sampled-data systems
    CDC'19 - 58th IEEE Conference on Decision and Control, 181-186, Nice, France, December 2019
    (Link - Preprint)

12. Ayush Kumar Jain, Denis Berdjag, Philippe Polet, Christophe Fiter
    Approximate computing control approaches using neural networks
    JNMACS'19 - Journées Nationales, Journées Doctorales et Ecole du GdR MACS, Bordeaux, France, June 2019

13. Jijju Thomas, Laurentiu Hetel, Christophe Fiter, Nathan van de Wouw, Jean-Pierre Richard
    Input-output stability analysis of decentralized systems with asynchronous controllers
    JNMACS'19 - Journées Nationales, Journées Doctorales et Ecole du GdR MACS, Bordeaux, France, June 2019

14. Jijju Thomas, Laurentiu Hetel, Christophe Fiter, Nathan van de Wouw, Jean-Pierre Richard
    Frequency domain stability criteria for decentralized systems with asynchronous controllers
    BMSC'19 - 38th Benelux Meeting on Systems and Control, Lommel, Belgium, March 2019
    (Preprint)

15. Jijju Thomas, Laurentiu Hetel, Christophe Fiter, Nathan van de Wouw, Jean-Pierre Richard
    L2-stability criterion for systems with decentralized asynchronous controllers
    CDC'18 - 57th IEEE Conference on Decision and Control, 6638-6643, Miami Beach, Florida, USA, December 2018
    (Preprint)

16. Jijju Thomas, Christophe Fiter, Laurentiu Hetel, Nathan van de Wouw, Jean-Pierre Richard
    Dissipativity based stability criterion for aperiodic sampled-data systems subject to time-delay
    CHAOS'18 - 5th IFAC Conference on Analysis and Control of Chaotic Systems, Eindhoven, The Netherlands, October-November 2018
    (Preprint)

17. Andrey Polyakov, Laurentiu Hetel, Christophe Fiter
    Relay control design using attractive ellipsoids method
    CDC'17 - 56th IEEE Conference on Decision and Control, 6646-6651, Melbourne, Australia, December 2017
    (Link - Preprint)

18. Zohra Kader, Christophe Fiter, Laurentiu Hetel, Lotfi Belkoura
    Non-quadratic stabilization of switched affine systems
    IFAC WC'17 - 20th IFAC World Congress, Toulouse, France, July 2017
    (Preprint)

19. Zohra Kader, Christophe Fiter, Laurentiu Hetel, Lotfi Belkoura
    Stabilization of LTI systems by relay feedback controller with disturbed measurements
    ACC'16 - American Control Conference, 5169-5174, Boston, Massachusetts, USA, July 2016
    (Link - Preprint)

20. Zohra Kader, Christophe Fiter, Laurentiu Hetel, Lotfi Belkoura
    Observer-based relay feedback controller design for LTI systems
    ECC'16 - 15th European Control Conference, 1667-1672, Aalborg, Denmark, June 2016
    (Link - Preprint)

21. Christophe Fiter, Hassan Omran, Laurentiu Hetel, Jean-Pierre Richard
    Tutorial on arbitrary and state-dependent sampling - Tutorial paper
    ECC'14 - 13th European Control Conference, 1440-1445, Strasbourg, France, June 2014
    (Link - Preprint)

22. Christophe Fiter, Emilia Fridman
    Stability of piecewise affine systems with state-dependent delay, and application to congestion control
    CDC'13 - 52nd IEEE Conference on Decision and Control, 1572-1577, Florence, Italy, December 2013
    (Link - Preprint)

23. Christophe Fiter, Laurentiu Hetel, Wilfrid Perruquetti, Jean-Pierre Richard
    A self-triggered control based on convex embeddings for perturbed LTI systems
    NOLCOS'13 - 9th IFAC Symposium on Nonlinear Systems, 335-340, Toulouse, France, September 2013
    Invited session "Event-Triggered and Self-Triggered Control", organized by Romain Postoyan and Dragan Nesic
    (Link - Preprint)

24. Christophe Fiter, Laurentiu Hetel, Wilfrid Perruquetti, Jean-Pierre Richard
    A robust polytopic approach for state-dependent sampling
    ECC'13 - 12th European Control Conference, 2603-2608, Zurich, Switzerland, July 2013
    (Link - Preprint)

25. Christophe Fiter, Laurentiu Hetel, Wilfrid Perruquetti, Jean-Pierre Richard
    State-dependent sampling for perturbed time-delay systems
    CDC'12 - 51st IEEE Conference on Decision and Control, 2358-2363, Maui, Hawaii, USA, December 2012
    (Link - Preprint)

26. Sonia Maalej, Christophe Fiter, Laurentiu Hetel, Jean-Pierre Richard
    State-dependent sampling for linear time invariant systems: a discrete time analysis
    MED'12 - 20th IEEE Mediterranean Conference on Control and Automation, 1129-1134, Barcelona, Spain, July 2012
    (Link - Preprint)

27. Sonia Maalej, Christophe Fiter, Laurentiu Hetel, Jean-Pierre Richard
    Échantillonnage dépendant de l’état: une approche discrète
    CIFA'12 - 7th IEEE Conférence Internationale Francophone d'Automatique, Grenoble, France, July 2012
    Invited session "Systèmes à Retards: Applications et Avancées Théoriques", organized by Michael Di Loreto, Alexandre Seuret, and Michel Dambrine
    (Preprint)

28. Christophe Fiter, Laurentiu Hetel, Wilfrid Perruquetti, Jean-Pierre Richard
    Échantillonnage dépendant de l’état pour les systèmes avec perturbations et retards
    MSR'11 - 8th Colloque Francophone sur la Modélisation des Systèmes Réactifs, Villeneuve d'Ascq, France, November 2011
    Best young researcher article award
    (Link - Preprint) - in French

29. Christophe Fiter, Laurentiu Hetel, Wilfrid Perruquetti, Jean-Pierre Richard
    State dependent sampling: an LMI based mapping approach
    IFAC WC'11 - 18th IFAC World Congress, 8824-8829, Milan, Italy, September 2011
    (Link - Preprint)

30. Christophe Fiter
    Échantillonnage dépendant de l'état: une approche par cartographie basée sur des LMIs
    JDMACS'11 - 4th Journées Doctorales MACS, Marseille, France, June 2011
    (Preprint) - in French

31. Christophe Fiter, Thierry Floquet, Joachim Rudolph
    Sensorless control of a stepper motor based on higher order sliding modes
    NOLCOS'10 - 8th IFAC Symposium on Nonlinear Systems, 777-782, Bologna, Italy, September 2010
    (Link - Preprint)

32. Christophe Fiter, Thierry Floquet, Joachim Rudolph
    Commande sans capteur du moteur pas-à-pas à base de modes glissants d'ordre supérieur
    CIFA'10 - 6th IEEE Conférence Internationale Francophone d'Automatique, Nancy, France, June 2010
    (Preprint) - in French

33. Guillaume Chaslot, Christophe Fiter, Jean-Baptiste Hoock, Arpad Rimmel, Olivier Teytaud
    Adding expert knowledge in Monte-Carlo Tree Search
    ACG'09 - 12th Advances in Computer Games, Pamplona, Spain, May 2009
    (Link - Preprint)

Thesis

1. Christophe Fiter
   Contribution à la commande robuste des systèmes à échantillonnage variable ou contrôlé
   Contribution to the control of systems with time-varying and state-dependent sampling
   PhD Thesis, Ecole Centrale de Lille, France, September 2012
   (Preprint - Slides FR - Slides EN)

2. Christophe Fiter
   Commande sans capteur mécanique pour le moteur pas-à-pas
   MSc Thesis, Ecole Centrale de Lille, France, September 2009
   (Preprint - Slides) - in French

3. Christophe Fiter
   Commande d'une interface haptique
   3rd year project report, Ecole Centrale de Lille, France, May 2009
   (Preprint - Slides - Video 1 - Video 2) - in French

4. Christophe Fiter
   Optimisation d’une intelligence artificielle appliquée au jeu de Go
   2nd year internship report, Ecole Centrale de Lille, France, February 2009
   (Preprint) - in French

Communications without proceedings

1. Christophe Fiter, Lucien Etienne, Laurentiu Hetel, Alexandre Kruszewski
   Stability of nonlinear systems with distributed sensors and aperiodic sampling
   Robust Control of Cyber-Physical Systems (ROCC-SYS) Workshop, Villeneuve d'Ascq, France, July 2018, Workshop

2. Christophe Fiter, Emilia Fridman
   Stability of piecewise-affine systems with state-dependent delay, and application to congestion control
   Groupe de Travail Systèmes Dynamiques Hybrides (GT SDH) from the Groupe de Recherche Modélisation, Analyse, et Conduite des Systèmes Dynamiques (GdR MACS), Paris, France, February 2015, Seminar
   (Slides)

3. Christophe Fiter, Laurentiu Hetel, Wilfrid Perruquetti, Jean-Pierre Richard
   A robust control approach for systems with state-dependent sampling
   Groupe de Travail Systèmes Dynamiques Hybrides (GT SDH) from the Groupe de Recherche Modélisation, Analyse, et Conduite des Systèmes Dynamiques (GdR MACS), Paris, France, December 2012, Seminar
   (Slides)

4. Christophe Fiter, Laurentiu Hetel, Wilfrid Perruquetti, Jean-Pierre Richard
   State-dependent sampling for online control
   Groupe de Recherche International on Delayed Systems (GdRI DelSys), Gif-sur-Yvette, France, November 2012, Seminar
   (Slides)

5. Christophe Fiter, Laurentiu Hetel, Wilfrid Perruquetti, Jean-Pierre Richard
   A polytopic approach for state-dependent sampling
   Highly-complex and networked control systems (HYCON2) Workshop on Large-Scale Complex Control Systems, Villeneuve d’Ascq, France, August 2012, Poster
   (Poster)

6. Christophe Fiter, Laurentiu Hetel, Wilfrid Perruquetti, Jean-Pierre Richard
   Échantillonnage dépendant de l'état pour les systèmes avec perturbations et retards
   Groupe de Travail Systèmes Dynamiques Hybrides (GT SDH) from the Groupe de Recherche Modélisation, Analyse, et Conduite des Systèmes Dynamiques (GdR MACS), Paris, France, April 2012, Seminar
   (Slides) - in French

7. Christophe Fiter, Laurentiu Hetel, Wilfrid Perruquetti, Jean-Pierre Richard
   Échantillonnage dépendant de l'état: une approche par cartographie basée sur des LMIs
   Groupes de Travail Systèmes à Retards (GT SAR) and Automatique et Réseaux de Communication (GT ARC) from the Groupe de Recherche Modélisation, Analyse, et Conduite des Systèmes Dynamiques (GdR MACS), Paris, France, May 2011, Seminar
   (Slides) - in French

8. Christophe Fiter
   Commande sans capteur du moteur pas-à-pas à base de modes glissants
   Colloque de Recherche Inter Ecoles Centrale (CRIEC), Villeneuve d'Ascq, France, June 2010, Colloquium
   (Slides) - in French

9. Jean-Yves Audibert, Guillaume Chaslot, Christophe Fiter, Sylvain Gelly, Jean-Baptiste Hoock, Rémi Munos, Arpad Rimmel, Olivier Teytaud, Yizao Wang, Ziqin Yu
   Supercomputer beats Go pro
   International Conference for High Performance Computing, Networking, Storage and Analysis - SuperComputing Series (HiPC-SC), Austin, Texas, United-States, November 2008, Poster
   (Poster)

10. Jean-Yves Audibert, Guillaume Chaslot, Vincent Danjean, Christophe Fiter, Thomas Hérault, Sylvain Gelly, Jean-Baptiste Hoock, Rémi Munos, Arpad Rimmel, Marc Schoenauer, Michèle Sebag, Olivier Teytaud, Yizao Wang, Ziqin Yu
    Parallel Monte-Carlo Tree Search for the game of Go
    Participating Design Conference (PDC), Bloomington, Indiana, United-States, October 2008, Poster
    (Poster)

11. Louis Chatriot, Christophe Fiter, Sylvain Gelly, Jean-Baptiste Hoock, Arpad Rimmel, Julien Perez, Olivier Teytaud
    Introducing human expertise and diversity in Monte-Carlo Tree-Search
    8th European Workshop on Reinforcement Learning (EWRL), Villeneuve d'Ascq, France, July 2008, Workshop
    (Slides)

Internal reports

1. Christophe Fiter, Laurentiu Hetel, Wilfrid Perruquetti, Jean-Pierre Richard
   State-dependent sampling for perturbed linear time-invariant systems: a polytopic approach
   LAGIS, 2013
   (Preprint)

2. Christophe Fiter, Laurentiu Hetel, Wilfrid Perruquetti, Jean-Pierre Richard
   State-dependent sampling for LTI systems with perturbations and delays
   LAGIS, 2012
   (Preprint)

3. Christophe Fiter, Laurentiu Hetel, Wilfrid Perruquetti, Jean-Pierre Richard
   Échantillonnage robuste dépendant de l'état pour les systèmes avec perturbations et retards
   LAGIS, 2011
   (Preprint)

Some links

• Scholar

• HAL

• ResearchGate

• Semantic scholar

• Scopus

• Orcid