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Islam Boussaada received his Master in Mathematics from Carthage University, and an M.Sc. degree in Pure Mathematics from University Paris 7 in 2004. In December 2008, he defended his Ph.D. degree in Mathematics from University of Rouen Normandy. In June 2016, he received his HDR degree (French Habilitation) in Physics from University Paris Saclay-University Paris Sud. In 2010, IB was appointed for one year as a post-doctoral fellow in the control of time-delay systems at L2S, Supelec-CNRS-University Paris Sud. From September 2011 until September 2017, he has been an associate professor at IPSA and an associate researcher at MODESTY Team of L2S. Since October 2017, IB is appointed associate researcher at DISCO Team and full professor at IPSA where he headed the Aeronautical and Aerospace Systems department from September 2017 till May 2019. From September 2018 untill August 2020, IB has been a researcher in temporary secondment at Inria Saclay-DISCO Team. His research interests belong to the qualitative theory of dynamical systems and its application in control problems. It includes stability analysis and stabilization of linear/nonlinear dynamical systems, analysis of parametric and distributed parameter systems, analysis of delay induced dynamics, nonhyperbolic dynamics, analysis of algebraic differential systems, control of active vibrations, dynamics of biochemical networks. IB is co-author of a monograph and co-editor of a contributed book, both published in Springer series, as well as co-author of more than 80 peer-reviewed publications. He co-organized the 4th GDRI DelSys's Workshop on Observing and Controlling Complex Dynamical Systems (November 2015), as well as the 1st GDRI Spa-Disco's workshop on Delays and Constraints in Distributed Parameters Systems (November 2017), both funded by CNRS and held at CentraleSupelec (Gif sur Yvette). IB is the co-organiser of several thematic/invited sessions in international conferences on the topic "Frequency domain methods for qualitative analysis of Time-delay Systems"; the 20th and 21st World Congress of the International Federation of Automatic Control (IFAC) (Toulouse, July 2017 & Berlin, July 2020), the 13th-15th IFAC Workshop on Time-delay Systems (Istanbul 2016, Budapest 2018 & Sinaia 2019) and the 24th International Symposium on Mathematical Theory of Networks and Systems (MTNS 2020) (Cambridge, 2021). Since September 2018, IB is co-leading the national research group GT OSYDI of the CNRS/GDR MACS and is a deputy director of the IRS iCODE Institute of the University Paris Saclay.

L2S, CentraleSupélec
Bât. Breguet B5.03A
3 rue Joliot Curie
91190 Gif-sur-Yvette, France

+33 (0)1 69 85 17 60

# Publications

Islam Boussaada received his Master in Mathematics from University Tunis II, and an M.Sc. degree in Pure Mathematics from University Paris 7 in 2004. In December 2008, he defended his Ph.D. degree in Mathematics from University of Rouen Normandy. In June 2016, he received his HDR degree (French Habilitation) in Physics from University Paris Saclay-University Paris Sud. In 2010, IB was appointed for one year as a post-doctoral fellow in the control of time-delay systems at L2S, Supelec-CNRS-University Paris Sud. From September 2011 until September 2017, he has been an associate professor at IPSA and an associate researcher at MODESTY Team of L2S. Since October 2017, IB is appointed associate researcher at DISCO Team and full professor at IPSA where he headed the Aeronautical and Aerospace Systems department from September 2017 till May 2019. Since September 2018 untill August 2020, IB is a researcher in temporary secondment at Inria Saclay-DISCO Team. His research interests belong to the qualitative theory of dynamical systems and its application in control problems. It includes stability analysis and stabilization of linear/nonlinear dynamical systems, analysis of parametric systems, analysis of delay induced dynamics, nonhyperbolic dynamics, analysis of algebraic differential systems, control of active vibrations, dynamics of biochemical networks. IB is co-author of a monograph and co-editor of a contributed book, both published in Springer series, as well as co-author of more than 60 peer-reviewed publications. He co-organized the 4th GDRI DelSys’s Workshop on Observing and Controlling Complex Dynamical Systems (November 2015), as well as the 1st GDRI Spa-Disco’s workshop on Delays and Constraints in Distributed Parameters Systems (November 2017), both funded by CNRS and held at CentraleSupelec (Gif sur Yvette). IB is the co-organiser of several thematic/invited sessions in international conferences on the topic “Frequency domain methods for qualitative analysis of Time-delay Systems”; the 20th and 21st World Congress of the International Federation of Automatic Control (IFAC) (Toulouse, July 2017 & Berlin, July 2020), the 13th-15th IFAC Workshop on Time-delay Systems (Istanbul 2016, Budapest 2018 & Sinaia 2019) and the 24th International Symposium on Mathematical Theory of Networks and Systems (MTNS 2020) (Cambridge, 2021). Since September 2018, IB is co-leading the national research group GT OSYDI of the CNRS/GDR MACS and is a deputy director of the IRS iCODE Institute of the University Paris Saclay.

### Journal articles

2023

On the pole placement of scalar linear delay systems with two delays

IMA Journal of Mathematical Control and Information, 40 (1), p. 81–105, 2023
2022

Time-Delay Control of Quadrotor Unmanned Aerial Vehicles: A Multiplicity-Induced-Dominancy Based Approach

Journal of Vibration and Control, 2022

Comparing advanced control strategies to eliminate stick-slip oscillations in drillstrings

IEEE Access, 10, p. 10949-10969, 2022
2021

Some Remarks on the Location of Non-Asymptotic Zeros of Whittaker and Kummer Hypergeometric Functions

Bulletin des Sciences Mathématiques, 174, p. Paper No. 103093, 12 pp., 2021

Conditions for stabilizability of time-delay systems with real-rooted plant

International Journal of Robust and Nonlinear Control, 2021

Multiplicity-induced-dominancy for delay-differential equations of retarded type

Journal of Differential Equations, 286 (15), p. 84-118, 2021
2020

Nonlinear Control of a Multi-Link Aerial System and ASEKF-Based Disturbances Compensation

IEEE Transactions on Aerospace and Electronic Systems, 2020

Calculation of the critical delay for the double inverted pendulum

Journal of Vibration and Control, 27 (3-4), p. 1 – 9, 2020

Real spectral values coexistence and their effect on the stability of time-delay systems: Vandermonde matrices and exponential decay

C. R. Math., 358 (9-10), Académie des sciences (Paris), p. 1011-1032, 2020
2019

Multiplicity-Induced-Dominancy in parametric second-order delay differential equations: Analysis and application in control design

Boussaada, Niculescu, El Ati, Pérez-Ramos, Liviu Trabelsi
ESAIM: COCV, EDP Sciences, 2019

Stability Analysis of a More General Class of Systems with Delay-Dependent Coefficients

IEEE Transactions on Automatic Control, 14, p. 1, 2019

Influence of micro-environment on yeast population dynamics

Trosset, Tliba, El Ati, Friha, Mogensen, Kahouli, Lacombe, Arkoun, Diop, Ledesma-Amaro, Boussaada
Ecological Engineering and Environment Protection, 2019 (2), p. 5-13, 2019

Dynamics of a prey-predator system with modified Leslie-Gower and Holling type Ⅱ schemes incorporating a prey refuge

Discrete and Continuous Dynamical Systems – Series B, 24 (9), p. 5003-5039, 2019
2018

On Qualitative Properties of Low-Degree Quasipolynomials: Further remarks on the spectral abscissa and rightmost-roots assignment

Bulletin mathématique de la Société des Sciences mathématiques de Roumanie, 61, p. 361 – 381, 2018

Further remarks on the effect of multiple spectral values on the dynamics of time-delay systems. Application to the control of a mechanical system

Linear Algebra and its Applications, 542, p. 589-604, 2018

Spectral design of robust delayed resonator by double-root assignment

IFAC-PapersOnLine, 51 (14), p. 72-77, 2018

Modeling and Control of an Interactive Tilt-rotor MAV for In-contact Cracks-sensing Operations

Nieto Hernandez, Escareño, Méndez Barrios, Niculescu, Boussaada, González-Galván, Alvarez-Munoz
IFAC-PapersOnLine, 51 (22), p. 318–323, 2018

Stability Analysis of Systems with Delay-Dependent Coefficients: an Overview

IEEE Access, p. 1, 2018
2017

A Delay-Based Sustained Chemical Oscillator: Qualitative Analysis of Oregonator-Based Models

IEEE Life Sciences Letters, 3 (3), p. 9 – 12, 2017

An explicit formula for the splitting of multiple eigenvalues for nonlinear eigenvalue problems and connections with the linearization for the delay eigenvalue problem

SIAM j. matrix anal. appl., 38 (2), Society for Industrial and Applied Mathematics, p. 599–620, 2017
2016

A control oriented guided tour in oilwell drilling vibration modeling

Annual Reviews in Control, 42, p. 100-113, 2016

Tracking the Algebraic Multiplicity of Crossing Imaginary Roots for Generic Quasipolynomials: A Vandermonde-Based Approach

IEEE Transactions on Automatic Control, 61 (6), p. 1601-1606, 2016
2015
2012

Amplitude Independent Frequency Synchroniser for a Cubic Planar Polynomial System

Journal of Computational and Nonlinear Dynamics, p. http://computationalnonlinear.asmedigitalcollection.asme.org/article.aspx?articleid=1397028, 2012
2011

Complexity reduction of C-algorithm

Applied Mathematics and Computation, 217 (17), p. 7318-7323, 2011

Isochronicity conditions for some planar polynomial systems II

Bulletin des Sciences Mathématiques, 135 (2), p. 230-249, 2011

Isochronicity conditions for some planar polynomial systems

Bulletin des Sciences Mathématiques, 135 (1), p. http://www.sciencedirect.com/science/article/pii/S0007449710000059, 2011
2006

On the existence of periodic solution of perturbed generalized Li\’enard equations

Electronic Journal of Differential Equations, p. http://ejde.math.txstate.edu/Volumes/2006/140/abstr.html, 2006

### Conference papers

2023

On Quasipolynomials Real Roots Coexistence: Effect on Stability of Time-Delay Systems with Perspectives in Partial Pole Placement

European Control Conference, Bucharest, Roumanie, 2023
2022

Padé Approximation and Hypergeometric Functions: A Missing Link with the Spectrum of Delay-Differential Equations

MTNS 2022 – 25th International Symposium on Mathematical Theory of Networks and Systems, Bayreuth, Allemagne, 2022

Towards reliable and robust anaerobic digestion

Microbial Engineering II, Albufeira, Portugal, 2022

An MID-based control of a vibrating axisymmetric membrane using piezoelectric transducers

ENOC 2022 – 10th European Nonlinear Dynamics Conference, Lyon, France, 2022

Observer Design in LTI Time-Delay Systems using Partial Pole Placement with Applications

IFAC Workshop on Time Delay Systems (TDS), Montreal, Canada, 2022

MID Property for Delay Systems: Insights on Spectral Values with Intermediate Multiplicity

61st IEEE Conference on Decision and Control (CDC 2022), Cancún, Mexique, 2022

Design of Quasipolynomial-Based Controllers with Dynamical Parameters – Application to Active Vibration Damping

Joint IFAC Conference: SSSC – TDS – LPVS 2022, Montréal, Canada, 2022

New Features of P3δ Software. Insights and Demos

Boussaada, Mazanti, Niculescu, Hammoumou, Millet, Raj, Huynh
TDS 2022 – 17th IFAC Workshop on Time Delay Systems, Montréal, Canada, 2022

Over one Century of Spectrum Analysis in Delay Systems: An Overview and New Trends in Pole Placement Methods

TDS 2022 – 17th IFAC Workshop on Time Delay Systems, Montreal, Canada, 2022

Rolling Balance Board Robust Stabilization: A MID-based Design

Benarab, Molnar, Boussaada, Trabelsi, Insperger, Niculescu
TDS 2022 – 17th IFAC Workshop on Time Delay Systems, Montreal, Canada, 2022

Analysis of an Active/Passive Postural Quiet Stance Regulation Model: Perfect Behavior and Critical Characteristics

1st IFAC Workshop on Control of Complex Systems COSY 2022, Bologne, Italie, 2022
2021

On pole placement and spectral abscissa characterization for time-delay systems

ENOC 2021 – 10th European Nonlinear Dynamics Conference, Lyon, France, 2021

Insights from a qualitative analysis of a gene expression model with delays

MTNS 2021 – 24th International Symposium on Mathematical Theory of Networks and Systems, Cambridge, Royaume-Uni, 2021

Effects of Roots of Maximal Multiplicity on the Stability of Some Classes of Delay Differential-Algebraic Systems: The Lossless Propagation Case

MTNS 2021 – 24th International Symposium on Mathematical Theory of Networks and Systems (MTNS 2021), Cambridge, Royaume-Uni, 2021

Torsional-vibrations Damping in Drilling Systems: Multiplicity-Induced-Dominancy based design

MTNS 2021 -24th International Symposium on Mathematical Theory of Networks and Systems, Cambridge, Royaume-Uni, 2021

Active vibration control of axisymmetric membrane through partial pole placement

The 16th IFAC Workshop on Time Delay Systems, Guangzhou, Chine, 2021

Insights into the multiplicity-induced-dominancy for scalar delay-differential equations with two delays

TDS 2021 – 16th IFAC Workshop on Time Delay Systems, Guangzhou, Chine, 2021

New Features of P3$\delta$ software: Partial Pole Placement via Delay Action

Boussaada, Mazanti, Niculescu, Leclerc, Raj, Perraudin
TDS 2021 – 16th IFAC Workshop on Time Delay Systems, Guangzhou, Chine, 2021

Insights on Pole-Placement of Dynamical Systems by PID Control with Guaranteed Delay Robustness

Boussaada, Ma, Chen, Bonnet, Niculescu, Chen
The 16th IFAC Workshop on Time Delay Systems, Guangzhou, Chine, 2021

Stability, Delays and Multiple Characteristic Roots in Dynamical Systems: A Guided Tour

16th IFAC Workshop on Time Delay Systems (IFAC TDS 2021), Guangzhou, Chine, 2021
2020

Some insights on rightmost spectral values assignment for time delay systems

IFAC 2020 – 21st IFAC World Congress, Berlin / Virtual, Allemagne, 2020

Multiplicity-Induced-Dominancy extended to neutral delay equations: Towards a systematic PID tuning based on Rightmost root assignment

ACC 2020 – American Control Conference, Denver, États-Unis, 2020

On qualitative properties of single-delay linear retarded differential equations: Characteristic roots of maximal multiplicity are necessarily dominant

IFAC 2020 – 21st IFAC World Congress, Berlin / Virtual, Allemagne, 2020

Towards an MID-based Delayed Design for Arbitrary-order Dynamical Systems with a Mechanical Application

IFAC 2020 – 21st IFAC World Congress, Berlin / Virtual, Allemagne, 2020

Spectral dominance of complex roots for single-delay linear equations

IFAC 2020 – 21st IFAC World Congress, Berlin / Virtual, Allemagne, 2020

The MID property for a second-order neutral time-delay differential equation

24th International Conference on System Theory, Control and Computing, Sinaia, Roumanie, 2020

Partial Pole Placement via Delay Action: A Python Software for Delayed Feedback Stabilizing Design

Boussaada, Mazanti, Niculescu, Huynh, Sim, Thomas
ICSTCC 2020 – 24th International Conference on System Theory, Control and Computing, Sinaia, Roumanie, 2020

Delayed control design of a vibrating thin membrane via a partial pole placement

ICSTCC 2020 – 24th International Conference on System Theory, Control and Computing, Sinaia, Roumanie, 2020

A pedagogical approach to data fusion and kalman filter

Castillo-Zamora, Aguilera-Alvarez, Escareno, Boussaada, Martinez-Nolasco, Jimenez-Garibay
Congreso Internacional en Sistemas Mecatronicos, Celaya, Mexique, 2020

Analysis of the Delayed Central Nervous System Action in the Regulation of a Third-order Muscle-Tendon Model

ICSTCC 2020 – 24th International Conference on System Theory, Control and Computing, Sinaia, Roumanie, 2020
2019

A problematic issue in the Walton-Marshall method for some neutral delay systems

CDC 2019 – 58th Conference on Decision and Control, Nice, France, 2019

On pole Placement and spectral abscissa characterization for time-delay systems

SSSC 2019 – 7th Symposium on System Structure and Control, Sinaia, Roumanie, 2019

Active vibration control through quasi-polynomial based controller

IFAC 2019 – 7th IFAC Symposium on System Structure and Control and 15th IFAC workshop on time-delay systems, Sinaia, Roumanie, 2019

Low complexity controllers for vibrations damping in drilling systems

ACC 2019 – American Control Conference, Philadelphia, États-Unis, 2019

Modeling and Control of an Aerial Multi-Cargo System: Robust Acquiring and Transport Operations

ECC 2019 – European Control Conference, Naples, Italie, 2019

Time-delay Control of a Multi-Rotor VTOL Multi-Agent System Towards Transport Operations

Álvarez-Muñoz, Castillo-Zamora, Escareno, Boussaada, Mendez-Barrios, Labbani-Igbida
2019 International Conference on Unmanned Aircraft Systems (ICUAS), Atlanta, États-Unis, 2019

Disturbances and Coupling Compensation for Trajectory Tracking of a Multi-link Aerial Robot

CoDIT 2019 – 6th International Conference on Control, Decision and Information Technologies, Paris, France, 2019
2018

On the Dominancy of Multiple Spectral Values for Time-delay Systems with Applications

14th IFAC Workshop on Time Delay Systems TDS, Budapest, Hongrie, 2018

Stability Analysis of Systems with Delay-Dependent Coefficients Subject to Some Particular Delay Structure

16th European Control Conference, ECC 2018, Limassol, Grèce, 2018

Time-delay Tolerant Control of an Omnidirectional Multi-agent System for Transport Operations

Álvarez-Muñoz, Escareño, Mendez-Barrios, Boussaada, Niculescu, Nieto Hernandez
ICSTCC 2018 – 22nd International Conference on System Theory, Control and Computing, Sinaia, Roumanie, 2018
2017

A Delayed Feedback Controller for Active Vibration Control : A Rightmost-Characteristic Root Assignment based Approach

21st International Conference on System Theory, Control and Computing (ICSTCC 2017), Sinaia, Roumanie, 2017

An Overview of Stability Analysis of Systems with Delay Dependent Coefficients

21st International Conference on System Theory, Control and Computing (ICSTCC 2017), Sinaia, Roumanie, 2017

Modeling and Control of an Interactive Tilt-rotor MAV

Nieto Hernandez, Escareno, Mendes-Barrios, Boussaada, Langarica Córdoba
RED-UAS 2017 – 4th International Workshop on Research, Education and Development on Unmanned Aerial Systems, Linkoping, Suède, 2017

Structural diagnosability analysis. Application to an induction motor

2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED), Tinos, Grèce, 2017

Stability Analysis of Control Systems subject to Delay-Difference Feedback

IFAC 2017 – 20th World Congress of the International Federation of Automatic Control, Toulouse, France, 2017

Geometric vs. algebraic approach: A study of double imaginary characteristic roots in time-delay systems

IFAC 2017 – 20th World Congress of the International Federation of Automatic Control, Toulouse, France, 2017

Stability Analysis of Systems with Delay-Dependant Coefficients a two-Parameter Approach

ACC 2017 – American Control Conference, Seattle, WA, États-Unis, 2017
2016

Towards more general stability analysis of systems with delay-dependent coefficients

55th IEEE Conference on Decision and Control (CDC 2016), Las Vegas, États-Unis, 2016

Critical delays, multiple characteristic roots and stability of dynamical systems : An overview

20th IEEE International Conference on System Theory, Control and Computing (ICSTCC), Sinaia, Roumanie, 2016

Tracking Sustained Oscillations in Delay Model Oregonators

2016 IEEE Conference on Control Applications(CCA), Buenos Aires, Argentine, 2016

### Books

2022
Chapitres d’ouvrages scientifiques

Counting Characteristic Roots of Linear Delay Differential Equations. Part II: from Argument Principle to Rightmost Root Assignment Methods

in CONTROLLING DELAYED DYNAMICS: ADVANCES IN THEORY, METHODS AND APPLICATIONS, 2022
2020

A Review on Multiple Purely Imaginary Spectral Values of Time-Delay Systems

in Algebraic and Symbolic Computation Methods in Dynamical Systems, pp. 239-258, 2020

Low complexity controller for active vibration damping of thin mechanical structures

in Vibration Control and Actuation of Large-Scale Systems, Elsevier, 2020
2019
Ouvrages scientifiques

Delays and Interconnections: Methodology, Algorithms and Applications

Springer, 2019
2015

Analysis and Control of Oilwell Drilling Vibrations

2015
Chapitres d’ouvrages scientifiques

Delay system modeling of rotary drilling vibrations

Boussaada, Saldivar, Mounier, Mondié, Cela, Niculescu
in Recent results on time-delay systems : analysis and Control, vol. 5, pp. 23-44, Springer : Heidelberg, 2015

On the Codimension of the Singularity at the Origin for Networked Delay Systems

in Delays and Networked Control Systems, vol. 5, pp. 3-15, Springer : Heidelberg, 2015
2014

Flatness-Based Control for a Non-Linear Spatially Distributed Model of a Drilling System