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Research Director at CNRS


Silviu-Iulian NICULESCU was born in Petrosani, Romania in 1968. He received the B.S. degree from the Polytechnical Institute of Bucharest, Romania, the M.Sc., and Ph.D. degrees, both in Automatic Control, from the Institut National Polytechnique de Grenoble, France, and the “Habilitation à Diriger des Recherches” (HDR) in Automatic Control from Université de Technologie de Compiègne, in 1992, 1993, 1996, and 2003, respectively. From 1992 to 1997, he was with the Department of Automatic Control and Computers, University "Politehnica" Bucharest, Romania. From 1997 to 2006, he was with HEUDIASYC (“Heuristics and diagnosis of complex systems”) laboratory, Compiègne, France as a Researcher at CNRS (French National Center for Scientific Research). He also held a PostDoctoral position in the Department of Applied Mathematics, ENSTA, Paris, France, from 1996 to 1997. In September 2006, he joined L2S (Laboratory of Signals and Systems), Gif-sur-Yvette, where he is currently Research Director (“Senior Researcher”) at CNRS. He was the head of the laboratory for 10 years (2010-2019). Co-founder of the Inria team "DISCO" (common team of Inria with CNRS and CentraleSupélec, located at L2S) in 2010, he is also an active member of the team.

Dr. Niculescu is author or co-author of ten books (Diderot: 1997; Birkhauser, Briefs: 2015; SIAM: 2007 and 2015; Springer: LNCIS - 2001, CES - 2014, AIC - 2015, SpringerBriefs - 2 in 2015  1 in 2016, and 1 in 2020)  and co-editor of six volumes (SIAM, 1999; Pergamon Press, 2001; Springer 2004; Springer 2007; Springer 2009). He is author or co-author of more than 500 book chapters or scientific papers. He has been the IPC Chairman of the 3rd IFAC Workshop on Time-Delay Systems (Santa Fe, NM, USA, December 2001) , of the 8th IFAC Workshop on Time-Delay Systems (Sinaia, Romania, September 2009), 13th European Control Conference (Strasoburg, France, June 2014), and the main organizer or co-organizer of the 1st CNRS-NSF Workshop on Time-Delay Systems (Paris: La Défense, January 2003), and of the two European Summer School in Automatic Control (Grenoble, September 2000; Grenoble, July 2013) devoted to time-delay systems. He was the guest co-editor of five special issues in the area of delay systems (Journal of Mathematical Modelling of Natural Phenomena (MMNP) in 2009, Asian Journal of Control in 2005, IMA Journal of Mathematical Control and Information in 2002 and 2010, and Kybernetika in 2001).

Dr. Niculescu has been scientific responsible of 15 international cooperation programs and projects (with Belgium, Mexico, Romania and Eastern European countries, South Korea, Hong Kong, Turkey and United States). He is member of the IPC of 45 International Conferences, and he was an Associate Editor of the IEEE Transactions on Automatic Control (2003-2005). Since 2011, he is an Associate Editor of European Journal of Controland IMA Journal of Mathematical Control and InformationIEEE Fellow since 2018, Dr Niculescu is the chair of the IFAC Technical Committee "Control Linear Systems" (TC 2.2) since 2017 and he was the chair of the IFAC Research Group on "Time-delay systems" (2007 and vice-chair of the IFAC Technical Committee on Control Linear Systems (TC 2.2) for the period 2011-2017. Since 2012, he is the founding editor and the scientific responsible of the Springer (book) series: Advances in Delays in Dynamics (ADD@S).

Dr. Niculescu was awarded the CNRS Silver and Bronze Medals for scientific research, the Best Paper Presentation Award at American Control Conference, Chicago, IL and the Ph.D. Thesis Award from INPG, Grenoble (France) in 2011, 2001, 2000, and 1996, respectively. He was also awarded the title of "Doctor Honoris Causa" of University of Craiova (Romania) in 2016. His research interests include delay systems, robust control, operator theory, and numerical methods in optimization, and their applications to the design of engineering systems.


"Jie Chen"   

Journal articles12 documents

  • Dan Ma, Jianqi Chen, Andong Liu, Jie Chen, Silviu-Iulian Niculescu. Explicit bounds for guaranteed stabilization by PID control of second-order unstable delay systems. Automatica, Elsevier, 2019, 100, pp.407-411. ⟨10.1016/j.automatica.2018.11.053⟩. ⟨hal-02328846⟩
  • A. Martínez-González, César Fernando Méndez Barrios, Silviu-Iulian Niculescu, Jie Chen, Liliana Félix. Weierstrass approach to asymptotic behavior characterization of critical imaginary roots for retarded differential equations. SIAM Journal on Control and Optimization, Society for Industrial and Applied Mathematics, 2019, 57 (1), pp.1-22. ⟨10.1137/17m1147135⟩. ⟨hal-01973973⟩
  • Jie Chen, Peilin Fu, César Fernando Méndez Barrios, Silviu-Iulian Niculescu, Hongwei Zhang. Stability Analysis of Polynomially Dependent Systems by Eigenvalue Perturbation. IEEE Transactions on Automatic Control, Institute of Electrical and Electronics Engineers, 2017, 62, pp.8. ⟨10.1109/TAC.2016.2645758⟩. ⟨hal-01431810⟩
  • César Fernando Méndez Barrios, Silviu-Iulian Niculescu, Jie Chen, Mauro Maya-Méndez. Output feedback stabilisation of single-input single-output linear systems with I/O network-induced delays. An eigenvalue-based approach. International Journal of Control, Taylor & Francis, 2014, 87 (2), pp.346-362. ⟨10.1080/00207179.2013.834075⟩. ⟨hal-00935388⟩
  • Peilin Fu, Jie Chen, Silviu-Iulian Niculescu. Author’s reply to “A counterexample to Generalized eigenvalue-based stability tests for 2-D linear systems: Necessary and sufficient conditions”. Automatica, Elsevier, 2010, 46 (1), pp.236-237. ⟨10.1016/j.automatica.2009.10.003⟩. ⟨hal-02291152⟩
  • Jie Chen, P. Fu, Silviu-Iulian Niculescu, Z. Guan. An eigenvalue perturbation approach to stability analysis, Part 2 : When will zeros of time-delay systems cross imaginary axis ?. SIAM Journal on Control and Optimization, Society for Industrial and Applied Mathematics, 2010, 48 (8), pp.5583-5605. ⟨10.1137/080741719⟩. ⟨hal-00557801⟩
  • Jie Chen, Peilin Fu, Silviu-Iulian Niculescu, Zhihong Guan. An eigenvalue perturbation approach to stability analysis, Part 1 Eigenvalue series of matrix operators. SIAM Journal on Control and Optimization, Society for Industrial and Applied Mathematics, 2010, 48 (8), pp.5564-5582. ⟨10.1137/080741707⟩. ⟨hal-02194588⟩
  • Jie Chen, P. Fu, Silviu-Iulian Niculescu, Z. Guan. An eigenvalue perturbation approch to stability analysis. Part 1 : engenvalue series of matrix operator. SIAM Journal on Control and Optimization, Society for Industrial and Applied Mathematics, 2010, 48 (8), pp.5564-5582. ⟨hal-00557795⟩
  • Jie Chen, Silviu-Iulian Niculescu, Peilin Fu. Robust stability of quasi-polynomials Frequency-sweeping conditions and vertex tests. IEEE Transactions on Automatic Control, Institute of Electrical and Electronics Engineers, 2008, 53 (5), pp.1219-1234. ⟨10.1109/TAC.2008.923686⟩. ⟨hal-02195961⟩
  • Peiling Fu, Jie Chen, Silviu-Iulian Niculescu. Generalized eigenvalue-based stability tests for 2-D linear systems Necessary and sufficient conditions. Automatica, Elsevier, 2006, 42 (9), pp.1569-1576. ⟨10.1016/j.automatica.2006.04.015⟩. ⟨hal-02294068⟩
  • Peiling Fu, Silviu-Iulian Niculescu, Jie Chen. Stability of linear neutral time-delay systems Exact conditions via matrix pencil solutions. IEEE Transactions on Automatic Control, Institute of Electrical and Electronics Engineers, 2006, 51 (6), pp.1063-1069. ⟨10.1109/TAC.2006.876804⟩. ⟨hal-02294072⟩
  • Keqin Gu, Silviu-Iulian Niculescu, Jie Chen. On stability crossing curves for general systems with two delays. Journal of Mathematical Analysis and Applications, Elsevier, 2005, 311 (1), pp.231-253. ⟨10.1016/j.jmaa.2005.02.034⟩. ⟨hal-02294292⟩

Conference papers23 documents

  • Dan Ma, Islam Boussaada, Catherine Bonnet, Silviu-Iulian Niculescu, Jie Chen. Multiplicity-Induced-Dominancy extended to neutral delay equations: Towards a systematic PID tuning based on Rightmost root assignment. ACC 2020 - American Control Conference, Jul 2020, Denver, France. ⟨hal-02479679⟩
  • A. Martínez-González, César Fernando Méndez Barrios, Silviu-Iulian Niculescu, Jie Chen. Insights on asymptotic behavior of characteristic roots of quasi-polynomials with delay-dependent coefficients in some ill-posed cases. 7th Symposium on System Structure and Control (SSSC) and 15th workshop on time-delay systems (TDS), Islam Boussaada; Y Bouzidi; A Quadrat, Sep 2019, Sinaia, Romania. ⟨10.1016/j.ifacol.2019.12.209⟩. ⟨hal-02329207⟩
  • A. Martínez-González, César Fernando Méndez Barrios, S.I. Niculescu, Jie Chen. Some Remarks on the Asymptotic Behavior for Quasipolynomials with Two Delays. TDS 2018 - 14th IFAC Workshop on Time Delay Systems, Jun 2018, Budapest, Hungary. pp.318-323, ⟨10.1016/j.ifacol.2018.07.243⟩. ⟨hal-01950608⟩
  • D. Ma, A. Liu, Jie Chen, Silviu-Iulian Niculescu. Lower Bounds on Delay Margin of Second-Order Unstable Systems. 14th IFAC Workshop on Time-Delay Systems (TDS), Jun 2018, Budapest, Hungary. pp.242-247, ⟨10.1016/j.ifacol.2018.07.230⟩. ⟨hal-02281721⟩
  • Jie Chen, Peilin Fu, César Fernando Méndez Barrios, Silviu-Iulian Niculescu, Hongwei Zhang. Stability and Instability Intervals of Polynomially Dependent Systems : An Matrix Pencil Analysis. ACC 2017 - American Control Conference, May 2017, Seattle, WA, United States. ⟨hal-02276316⟩
  • César Fernando Méndez Barrios, Silviu-Iulian Niculescu, Jie Chen. On the Weierstrass preparation theorem with applications to the asymptotic analysis of characteristics roots of time-delay systems. 12th IFAC Workshop on Time Delay Systems TDS 2015, Jun 2015, Ann Arbor, United States. pp.251-256. ⟨hal-01284883⟩
  • César Fernando Méndez Barrios, Silviu-Iulian Niculescu, Jie Chen. Some Remarks on Output Feedback Stabilization of SISO Systems with I/O Network-Induced Delays. 8th IFAC Workshop on Time-Delay Systems, Sep 2009, Sinaia, Romania. pp.230-235, ⟨10.3182/20090901-3-ro-4009.00037⟩. ⟨hal-02291595⟩
  • Jie Chen, P. Fu, Silviu-Iulian Niculescu. An eigenvalue perturbation stability analysis approach with applications to time-delay and polynomially dependent systems. 7th World Congress on Intelligent Control and Automation, WCICA'08, Jun 2008, Chongqing, China. pp.307-312, ⟨10.1109/WCICA.2008.4592942⟩. ⟨hal-02291745⟩
  • Peilin Fu, Jie Chen, Silviu-Iulian Niculescu. High-order analysis of critical stability properties of linear time-delay systems. 26th American Control Conference, Jul 2007, New York, NY, United States. ⟨hal-02194454⟩
  • Jie Chen, Peilin Fu, Silviu-Iulian Niculescu. On the robust stability of some parameter-dependent linear systems Solutions via matrix pencil techniques. 15th Mediterranean Conference on Control and Automation, Jun 2007, Athens, Greece. ⟨10.1109/MED.2007.4433795⟩. ⟨hal-02194458⟩
  • Jie Chen, P. Fu, Silviu-Iulian Niculescu. When will zeros of time-delay systems cross imaginary axis?. 2007 9th European Control Conference, ECC 2007, Jul 2007, Kos, Greece. pp.5631-5638. ⟨hal-02272376⟩
  • Silviu-Iulian Niculescu, Peilin Fu, Jie Chen. Some remarks on the stability of gyroscopic systems with delays : the semisimple eigenvalue case. International Conference on systems and control (CSC 07), May 2007, Marrakech, Morocco. ⟨hal-02293079⟩
  • Silviu-Iulian Niculescu, Peilin Fti, Jie Chen. On the stability of linear delay-differential algebraic systems Exact conditions via matrix pencil solutions. 45th IEEE Conference on Decision and Control, Dec 2006, San Diego, CA, Canada. ⟨hal-02195827⟩
  • Jie Chen, Peilin Fu, Silviu-Iulian Niculescu. Asymptotic behavior of imaginary zeros of linear systems with commensurate delays. 45th IEEE Conference on Decision and Control, Dec 2006, San Diego, CA, United States. ⟨10.1109/CDC.2006.377014⟩. ⟨hal-02195825⟩
  • Silviu-Iulian Niculescu, Peiling Fu, Jie Chen. Stability of linear lossless propagation systems Exact conditions via matrix pencil solutions. 6th IFAC Workshop on Time Delay Systems, TDS 2006, Jul 2006, L'Aquila, Italy. pp.181-186. ⟨hal-02294075⟩
  • P. Fu, Jie Chen, Silviu-Iulian Niculescu. Stability tests for 2-D systems Exact solutions via matrix pencil conditions. 5th IFAC Symposium on Robust Control Design, ROCOND'06, Jul 2006, Toulouse, France. pp.423-428. ⟨hal-02294063⟩
  • S.-I. Niculescu, Peiling Fu, Jie Chen. Stability switches and reversals of linear systems with commensurate delays: a matrix pencil characterization. 16th IFAC World Congress, Jul 2005, Prague, Czech Republic. pp.406-411, ⟨10.3182/20050703-6-CZ-1902.00638⟩. ⟨hal-02296595⟩
  • Silviu-Iulian Niculescu, Peiling Fu, Jie Chen. Stability analysis of delay differential algebraic equations : a matrix pencil approach. Mini Symposium : Stability of delay differential algebraic equations with applications, S.I Niculescu, Jul 2005, New Orlean, United States. ⟨hal-02296606⟩
  • Peiling Fu, Silviu-Iulian Niculescu, Jie Chen. Stability of linear neutral time-delay systems Exact conditions via matrix pencil solutions. 2005 American Control Conference, ACC, Jun 2005, Portland, OR, United States. pp.4259-4264. ⟨hal-02294303⟩
  • Jie Chen, Silviu-Iulian Niculescu. Robust stability of quasipolynomials with commensurate delays. 2004 43rd IEEE Conference on Decision and Control (CDC), Dec 2004, Nassau, Bahamas. pp.2887-2892. ⟨hal-02294293⟩
  • Jie Chen, Silviu-Iulian Niculescu. Robust stability of quasipolynomials Vertex-type tests and extensions. Proceedings of the 2004 American Control Conference (AAC), Jun 2004, Boston, MA, United States. pp.4159-4164. ⟨hal-02294301⟩
  • Jie Chen, Silviu-Iulian Niculescu. Robust Stability of Quasipolynomials Frequency-Sweeping Conditions. 42nd IEEE Conference on Decision and Control, Dec 2003, Maui, United States. pp.5048-5053. ⟨hal-02294766⟩
  • Silviu-Iulian Niculescu, Jie Chen. Frequency sweeping tests for asymptotic stability a model transformation for multiple delays. The 38th IEEE Conference on Decision and Control (CDC), Silviu Iulian Niculescu; Keqin Gu, Dec 1999, Phoenix, United States. pp.4678-4683. ⟨hal-02299345⟩

Book sections3 documents

  • A. Martínez-González, Silviu-Iulian Niculescu, Jie Chen, César Fernando Méndez Barrios, José Guadalupe Romero Velázquez, et al.. Asymptotic Analysis of Multiple Characteristics Roots for Quasi-polynomials of Retarded-Type. Giorgio Valmorbida; Islam Boussaada; Alexandre Seuret; Rifat Sipahi. Delays and Interconnections: Methodology, Algorithms and Applications, 10, Springer, pp.131-151, 2019, Part of the Advances in Delays and Dynamics book series (ADVSDD), ⟨10.1007/978-3-030-11554-8_9⟩. ⟨hal-02350881⟩
  • Keqin Gu, Silviu-Iulian Niculescu, Jie Chen. Computing maximum delay deviation allowed to retain stability in systems with two delays. Applications of Time Delay Systems, 352, pp.157-164, 2007, Lecture Notes in Control and Information Sciences book series (LNCIS), ⟨10.1007/978-3-540-49556-7_10⟩. ⟨hal-02271893⟩
  • Jie Chen, Silviu-Iulian Niculescu. Robust stability of quasipolynomials. Silviu Iulian Niculescu; Keqin Gu. Advances in time-delay systems, 38, pp.43-60, 2004. ⟨hal-02329763⟩