Laurentiu Hetel

Bio

Laurentiu Hetel is a Senior Research Scientist at the Centre National de la Recherche Scientifique (CNRS). He works with  CRIStAL (UMR CNRS 9189), Lille, France. He received the PhD Degree in Automatic Control from the Institut National Polytechnique de Lorraine,  Nancy University, France, in 2007. He was a postoctoral fellow at the Eindhoven University of Technology (April to October 2008).  In the past, he has headed the group "Control and Scientific Computing"  (approx. 55 people)  of CRIStAL (2018-2024). From 2015 to 2023 he was a member of the editorial board of the journal Systems and Control Letters. He also served as  co-chair of the French national research group on hybrid systems (2014 – 2022, GT SDH of GDR MACS/SAGIP). He conducts research in the area of Control Systems. His main research interests are in Hybrid Dynamical Systems and Sampled-data Control. He is currently an Associate Editor for Automatica and he is in charge of the Research Axis "Robotics and Cyber-physical Systems" of CRIStAL.  

Major Interests 

• Hybrid Systems

• Switched affine systems

• Sampled - data control  and  Networked / Embedded Control Systems

PhD students

• Bassim MAALOUL, thesis title: Control of switched affine systems (starting date: November 2024) - supervised together with Ying Tang and Denis Efimov. Funded by Univ. Lille.

• Antoine ALESSANDRINI, thesis title: "Compliance preservation in Soft Robots" (starting date: October 2024) - supervised together with Alexandre Kruszewski. Funded by Univ. Lille, Region Hauts-de-France (via FEDER) and the startup Compliace Robotics.

• Tychique NZALALEMBA KABWANGALA , thesis title: "Dynamics of motions: theoretical and data driven models" (starting date: December 2022) - supervised together with Mihaly Petreczky and Lotfi Belkoura. Funded by a CIFRE PhD project with Autoliv.

• Ghania KHODJA, hesis title : "Contributions to the local stabilization of switched affine systems" (Centrale Lille, November 24, 2024)  - supervised together with C. Fiter and T? Floquet.

• Xinyong WANG. thesis title : "Contributions to the study of sampled - data hyperbolic systems"  (Centrale Lille, February 14, 2022) - supervised together with C. Fiter and Y. Tang.

• Jijju THOMAS. thesis title: "Networked Dynamical Systems : An Input-Output Approach towards Stability and Synchronization Analysis " (TU Eindhoven, May 5th, 2021, H2020 UCOCOS) - supervised together with J.P. Richard, N.v.d. Wouw.

• Deesh DILEEP. thesis title: "Network design for decentralized control". (H2020 UCOCOS, KU Leuven & Centrale Lille, Mars 2020) - supervised together with J.P. Richard, W. Michiels, now engineer at Eir Grid, Dublin, Ireland.

• Zohra KADER, thesis title: "Observation et commande des systèmes affines à commutation" (Lille 1, September 2017) - supervised together with C. Fiter and L. Belkoura, now Assistant Professor at Univ. Toulouse.

• Hassan OMRAN, thesis title: "Commande et observation des systèmes en réseau" (Ecole Centrale de Lille,  Mars 2014)  - supervised together with J.P. Richard and  F. Lamnabhi-Lagarrigue; now Assistant Professor at Univ. of Strasbourg. 

• Christophe FITER,  thesis title: "Contribution à la commande robuste des systèmes à échantillonnage variable ou contrôlé" (Ecole Centrale de Lille, September 25th, 2012) -  Best young researcher article award at  MSR2011 - supervised together with J.P. Richard and W. Perruquetti; now Assistant Professor at Université de Lille.

Research Engineers and Post-Doctoral fellows

•    Xinyong WANG (CPER RITMEA)

•    Mert BASTUG (ANR ROCC-SYS); now engineer at Siemens

•     Lucien ETIENNE (ARCIR ESTIREZ, INRIA); now Assistant Professor at Ecoles de Mines de Douais.

•     Hector RIOS (ARCIR ESTIREZ, INRIA); now Research Fellow at Instituto Tecnológico de La Laguna, Mexico.

•     Srinath GOVINDASWAMY (SYSIASS, Ecole Centrale de Lille).

•     Romain DELPOUX (ATER - Univ. Lille 1); now Assistant Professor at INSA Lyon.

Participation to research projects

•  CPER RITMEA

• ANR  project "DIGItal set-valued and homogeneous SLIding mode control and Differentiators: the implicit approach" (DIGITSlid)

•  ANR JC-JC  project "Robust Control of Cyber-Physical Systems" (ROCC-SYS)

•  PEPS CNRS "ARTIC"

•  H2020 "Understanding and Controlling of Complex Systems" (UCOCOS)

•  ARCIR (Conseil régional Nord Pas de Calais) -  "Estimation distribuée de systèmes dynamiques en réseaux" (ESTIREZ) 

•  FP7 - NoE  HYCON 2

•  Interreg IV A 2 Mers Seas Zeeën  - Sysiass

Selected Publications

Most of the recent publications are available on the website of CRIStAL.

Sampled-Data Control and Networked/Embedded Control Systems

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, survey paper, 2017 (preprint)

Hassan Omran, Laurentiu Hetel, Mihaly Petreczky, Jean-Pierre Richard, Françoise Lamnabhi-Lagarrigue. Stability analysis of some classes of input-affine nonlinear systems with aperiodic sampled-data control. Automatica, 2016

Jijju Thomas, Christophe Fiter, Laurentiu Hetel, Nathan van De Wouw, Jean-Pierre Richard. Frequency domain Stability Analysis of Asynchronously Sampled Decentralized LTI Systems. Automatica, 2021

M. Cloosterman, L. Hetel, N. Van De Wouw, M. Heemels, J. Daafouz, H. Nijmeijer, -  Controller synthesis for networked control systems. Automatica,  2010

Laurentiu Hetel, Jamal Daafouz, Claude Iung. - Analysis and control of LTI and switched systems in digital loops via an event-based modeling - International Journal of Control, 2008

Hybrid Systems

Laurentiu Hetel, Emmanuel Bernuau. "Local Stabilization of Switched Affine Systems", IEEE Transaction on Automatic Control. 2015

Laurentiu Hetel, Emilia Fridman, "Robust sampled-data control of switched affine systems", IEEE Transactions on Automatic Control, 2013 

G. Khodja, C. Fiter, L. Hetel, T. Floquet. Local stabilization conditions for discrete-time switched affine systems. Automatica, 2024

X. Wang, L. Hetel, J. Lauber, Y. Tang. Boundedness and local stability of oscillation in a class of piecewise affine systems. Automatica, 2024

Laurentiu Hetel, Jamal Daafouz, Claude Iung. – Stabilization of Arbitrary Switched Linear Systems With Unknown Time-Varying Delays – IEEE Transactions on Automatic Control, Volume: 51 –  Issue: 10 –  page(s): 1668- 1674, October 2006,