Nicolás Espitia

About Me



CNRS researcher (Chargé de recherche)

Centre de Recherche en Informatique, Signal et Automatique de Lille (CRIStAL UMR CNRS 9189) - Centrale Lille -Univ Lille


Nicolas Espitia Hoyos' photo


Contact info

Sciences et technologies, Batiment ESPRIT, Université de Lille, 59655 Villeneuve-d'Ascq - France

nicolas.espitia-hoyos[at]univ-lille[dot]fr

I am a CNRS researcher in the SHOC team at the Centre de Recherche en Informatique, Signal et Automatique de Lille (CRIStAL UMR CNRS 9189).

I was a Postdoctoral researcher at INRIA Lille - Nord Europe.

I obtained the Ph.D. degree in Automatic Control from the University of Grenoble Alpes, in 2017, under the supervision of Antoine Girard, Nicolas Marchand and Christophe Prieur . I was part of the GIPSA Lab in the Control Systems Department.

I graduated from Université Joseph Fourier (UJF) and Institut Polytechnique de Grenoble (INPG) in 2014, with a Master Degree in Automatic Control.

I received the Bachelor's degree in Electronic engineering in 2011 and Mathematics in 2012 both from Escuela Colombiana de Ingeniería Julio Garavito, Bogotá, Colombia.

Research interests

My research interests deal with modeling, control and estimation of complex heterogeneous systems. In particular, I am interested in event-triggered boundary control strategies and finite-time stabilization of complex networks modeled by partial differential equations (PDEs). The applications include Multi-Agent Systems (MAS) and active control strategies for turbulent separated flows.


Personal Bio

Experience

Since Oct 2019

CNRS researcher (Chargé de recherche Classe Normal), Centre de Recherche en Informatique, Signal et Automatique de Lille (CRIStAL UMR CNRS 9189) - Centrale Lille -University of Lille, France.

2017-2019

Postdoctoral researcher, "Control of turbulent separated flows" INRIA Lille - Nord Europe, Projet VALSE, Lille, France.

Advisors: Andrey Polyakov and Jean-Pierre Richard.

Postdoctoral researcher, "Finite-time control of systems of systems (SoS)" INRIA Lille - Nord Europe, Projet VALSE, Lille, France.

Advisors: Andrey Polyakov , Wilfrid Perruquetti and Denis Efimov.

Education

2014 - 2017

Ph.D. in Automatic Control, Gipsa-lab, department of Automatic Control, University of Grenoble Alpes, Grenoble, France.

Thesis, “Event-based control of networks modeled by a class of infinite-dimensional systems”.

Advisors: Antoine Girard, Nicolas Marchand and Christophe Prieur .

2013 - 2014

M.Sc. Degree in Systems Control and Information Technologies MiSCIT, University of Grenoble Alpes, Grenoble, France.

Research internship at Gipsa-Lab, “Event-based control of linear hyperbolic systems”.

2008 - 2012

B.S. Degree in Mathematics, Escuela Colombiana de Ingeniería Julio Garavito, Bogotá, Colombia.

Dissertation, “Essentials of diagnosis of linear dynamical systems”.

2006-2011

B.S. Degree in Electronic Engineering, Escuela Colombiana de Ingeniería Julio Garavito, Bogotá, Colombia.

Dissertation, “Impedance spectrometry as a novel method to correlate mechanical properties of concretes with different additions”.

Publications

Journals

J5

N. Espitia; I. Karafyllis; M. Krstic “Event-triggered boundary control of constant-parameter reaction-diffusion PDEs: A small-gain approach”, Under review in Automatica.

J4

N. Espitia, “Observer-based event-triggered boundary control of a linear 2x2 hyperbolic systems”, Under review in Systems & Control Letters.

J3

N. Espitia; A. Polyakov; D. Efimov; W. Perruquetti, “Boundary time-varying feedbacks for fixed-time stabilization of constant-parameter reaction-diffusion systems”, Automatica, Vol. 103, pp. 398-407. ( Link-Hal)

J2

N. Espitia; A. Girard; N. Marchand; C. Prieur, “Event-based boundary control of a 2 × 2 linear hyperbolic system via backstepping approach”, IEEE Transactions on Automatic Control, Vol. 63 (8), pp. 2686-2693, 2018. ( Link - Hal)

J1

N. Espitia; A. Girard; N. Marchand; C. Prieur, “Event-based control of linear hyperbolic systems of conservation laws”, Automatica, Vol 70, pp.275-287, 2016. ( Link - Hal)

Google Scholar.

Conferences

C9

N. Espitia; I. Karafyllis; M. Krstic, “Event-triggered boundary control of constant-parameter reaction-diffusion PDEs: A small-gain approach ”, submitted to the 2020 American control conference, Denver, United states of America, 2020.

C8

N. Espitia; A. Polyakov; E. Fridman, “On Local Finite-Time Stabilization of the Viscous Burgers Equation Via Boundary Switched Linear Feedback ”, accepted for presentation in the 58th IEEE Conference on Decision and Control (CDC), Nice, France, 2019.

C7

N. Espitia; A. Polyakov; D. Efimov; W. Perruquetti, “Some characterizations of boundary time-varying feedbacks for fixed-time stabilization of reaction-diffusion systems”, Proc of the CPDE-CDPS’19 joint workshop, Oaxaca, Mexico, 2019.

C6

N. Espitia; A. Polyakov; D. Efimov; W. Perruquetti, “On continuous boundary time-varying feedbacks for fixed-time stabilization of coupled reaction-diffusion systems”, Proc. of the 57th IEEE Conference on Decision and Control (CDC), Miami, FL, United States of America, 2018.

C5

N. Espitia; A. Girard; N. Marchand; C. Prieur, “Dynamic boundary control synthesis of coupled PDE-ODEs for communication networks under fluid flow modeling”, Proc. of the 56th IEEE Conference on Decision and Control (CDC), Melbourne, Australia, 2017.

C4

N. Espitia; A. Tanwani; S. Tarbouriech; “Stabilization of boundary control led hyperbolic PDEs via Lyapunov-based event triggered sampling and quantization”, Proc. of the 56th IEEE Conference on Decision and Control (CDC), Melbourne, Australia, 2017.

C3

N. Espitia; A. Girard; N. Marchand; C. Prieur “Fluid-flow modeling and stability analysis of communication networks”, Proc. of the IFAC 2017 World Congress, Toulouse, France.

C2

N. Espitia; A. Girard; N. Marchand; C. Prieur “Event-based stabilization of linear systems of conservation laws using a dynamic triggering condition”, Proc. of the 10th IFAC Symposium on Nonlinear Control Systems (NOLCOS), 2016.

C1

A. Hernandez; N. Espitia; N. Torres; P. Quiroga “Impedance Spectrometry as a novel method to correlate mechanical properties of concrets with differents additions”, 4th International Conference “Non-Traditional Cement & Concrete”, ISSN 978-80-214-4301, June 27-30, 2011, Brno, Czech Republic.

Seminars

  • “On continuous boundary time-varying feedbacks for finite-time stabilization of coupled reaction-diffusion systems". ANR Finite4SOS annual meeting, École des Mines de Paris, Paris, France, March 2018.
  • “On event-based boundary control strategies and finite-time stabilization for some linear partial differential equations (PDEs)". Invited by Catherine Bonnet , DISCO team Inria Saclay, L2S CentraleSupelec, Gif-sur-Yvette cedex, France, March 2018.
  • “Event-based control of networks modeled by a class of infinite-dimensional systems". Journées Scientifiques, Labex, PERSYVAL-LAB, Grenoble, France, June 2017.
  • “Event-based control of networks of conservation laws". Invited by Jean-Charles Delvenne from Université Catholique de Louvain, Louvain la Neuve, Belgium, May 2017.
  • “Boundary control and event-based control strategies of networks of conservation laws". Invited by Sophie Tarbouriech from the MAC group at LAAS-CNRS, Toulouse, France, February 2017.
  • “Event-based control of linear hyperbolic systems". Invited by Florent di Meglio for the GDR MACs, GT-EDP meeting, Bensançon, France, October 2015.

Collaborators

Antoine Girard (Senior Researcher, L2S - CNRS)

Christophe Prieur (Senior Researcher, Gipsa-Lab, CNRS)

Nicolas Marchand (Senior Researcher, Gipsa-Lab, CNRS)

Aneel Tanwani (Researcher, LAAS-CNRS)

Sophie Tarbouriech (Senior Researcher, LAAS-CNRS)

Andrey Polyakov (Researcher, INRIA)

Denis Efimov (Researcher, INRIA)

Wilfrid Perruquetti (Professor, École Centrale de Lille)

Emilia Fridman (Professor, School of Electrical Engineering, Tel-Aviv University)

Misc

Teaching

2016 - 2017

Teaching Assistant, ENSE3, Grenoble INP, Grenoble, France (64 h)

  • “IT Tools and Optimization" 16 h
  • “Design and Control of Dynamical Systems" 14 h
  • “Automatique pour l’Ingénieur" 32 h

2011 - 2013

Teaching Assistant, Department of Mathematics, Escuela Colombiana de Ingeniería Julio Garavito, Bogotá, Colombia (1032 h).

  • “Multivariable Calculus" 590 h
  • “ Introduction to Calculus" 442 h

Other Activities

Reviewing

  • Journal: Automatica, IEEE Trans. on Automatic Control, European Journal of Control, Asian Journal of Control, Nonlinear Dynamics, International Journal of Control, IEEE Trans. on Control Systems Technology.
  • Conferences: Conference on decision and control (CDC), European control conference (ECC), American control conference (ACC).

Scientific animation

  • Volunteer to assist the organizing committee of the IFAC 2017 World Congress, Toulouse, France;
  • Organization of the Ph.D students’s day 2015 (JDD’15), École Doctorale d’ Électronique, Électrotechnique, Automatique et Traitement du Signal (EEATS), Grenoble, France.