Seminar of Professor A. J. van der Schaft, University of Groningen

A seminar will be given by Professor A. J. van der Schaft of the University of Groningen, visiting professor at LAGEP on Thursday 19 October 2017 at 14:00 in room G111.

The title and summary of this seminar are:
Title: Stabilization of optimal supply-demand values for power networks

Abstract: Key constraint in the control of power networks is supply-demand matching, where the total consumed power is equal to the total generated power. Optimization of the so-called social welfare function under the constraint of supply-demand matching leads to an optimal set-point for the operation of the power network. Continuous-time implementation of the primal-dual gradient algorithm converging to this optimal set-point defines a distributed dynamical controller for the physical power network. It will be shown that the optimal set-point is an asymptotically stable equilibrium of the resulting closed-loop system. Main idea in the proof is the port-Hamiltonian modeling of the physical network, as well as of the primal-dual gradient controller, leading to an insightful Lyapunov function.

Yacine Chitour of the L2S gives a seminar in the Bordet room at the LAGEP at 14:00.

Sorry, this entry is only available in Français.

” From Doctorate to Employment “

The Université de Lyon proposes in the section “Doctorat”, the setting up of a new system initiated by the Department of Doctoral Studies at the University of Lyon, with the expertise of OPE (Objective for Employment), ” From Doctorate to Employment “.

It is presented in the form of a six-month program led by experts, for the support of doctors tailored to the search for a permanent job outside the academic sector. This course is based on a collective dynamic led by professional trainers, and associated with a personalized accompaniment adapted to their profile.

The program of the device, with the contacts to be taken, is–353353.kjsp?RH=PHD

and a Presentation Note ED-OPE 07-2017-1

Two professors, Prof. Yao Pengfei and Prof. Guo Baozhu, from the Chinese Academy of Sciences, visits LAGEP

Nous accueillons deux professeurs, Prof. Yao Pengfei et Prof. Guo Baozhu, de l’académie des sciences de Chine, en visite au LAGEP. Nous avons programmé deux conférences données à partir de 13h30 à la salle F001 CPE le jeudi 29 juin 2017.

Voici les titres et les résumés des conférences :


Title : Why we need Riemannian Geometry for the Control of the Wave Equation with Variable Coefficient,
Pengfei YAO, Academy of Mathematics and Systems Science, Academia Sinica.

Abstract: I will present a brief comparison between several methods which have been used in the literature to show why Riemannian geometry is necessary for control of the wave equation with variable coefficients. The classical multipliers are generalized to a version of the Riemannian geometry setting with help of the Bochner technique to find out verifiable geometric assumptions for control of the wave equation with variable coefficients in space. Thus controllability/stabilization of the wave equation with variable coefficients comes down to an escape vector field for the Riemannian metric, given by the variable coefficients.

Title : A Nonlinear Extended Stated Observer Based on Switching Functions,
Bao-Zhu GUO, Academy of Mathematics and Systems Science, Academia Sinica.

Abstract: In the last two decades, there is a new emerging control technology called active disturbance rejection control (ADRC) proposed by Jingqing Han of the Chinese Academy of Sciences, which has been widely used in engineering control in many countries. Progress from a theoretical perspective was made only in last few years. In this talk, I will briefly introduce ADRC and focus on some recent results on extended state observers for nonlinear systems, a key part of ADRC. Numerical results are also presented to compare with other control methods.

Nous vous souhaitons nombreux à la demie journée thématique.

Control@Lyon Day

At the Lyonnaise automatic community and others!!

On 6 and 7 July, the “Workshop on incremental methods in control” is organized by Control @ Lyon.

You can find information about this event on:

A form is required to attend!

Fulvio Forni
Paolo Forni
Vincent Fromion
Ian Manchester
Laurent Praly
Björn Rüffer
Giovanni Russo
Ricardo Sanfelice
Cyrus Mostajeran
Nathan Van de Wouw

Venue and Local information:

The workshop will take place in CPE Lyon, 3 rue Victor Grignard, 69622 Villeurbanne.

Journées du LAGEP : June 22nd and 23rd, 2017

These scientific days are an unmissible annual meeting for the laboratory. They are an excellent opportunity for the PhD students to present their angoing research (oral presentations and poster sessions) to the laboratory staff and partners. They will take place on June 22nd and 23rd, 2017 at Petit-Amphi of CPE Lyon. Event not to be missed !

Scientific program HERE

Contacts :

    Isabelle Pitault (
    Noureddine Lebaz (

LAGEP is member of Carnot institut since 2011.

(Français) Concours Logo LAGEP

Hello everyone,

Last month we proposed to our PhD students and post-doctoral students to remaster the LAGEP logo.
Oceane makes the following proposition:

So if you like, vote for!

French NMO Service Award 2017

Professor Bernhard MASCHKE received the IFAC France 2017 service award.
We congratulate him and the other candidates:
Yann Chamaillard – Michel Devy – Maurice Fadel – Yann Le Gorrec – Bernhard Maschke – Farouk Yalaoui

Guest month: Fulvio Forni, researcher at the University of Cambridge,

Fulvio Forni, a researcher at the University of Cambridge, begins his “guest month” in our laboratory next Monday.

You can find information on its research topic here:


Seminar: Differential analysis of nonlinear systems: positivity, monotonicity and interconnections.

Fulvio Forni, a Cambridge University researcher, begins Monday his “guest month” at the LAGEP.

You can find information on its research topic here:


He will give a seminar on Tuesday 04/04/2017, 2:00 pm in the Bordet room.


Differential analysis of nonlinear systems: positivity, monotonicity and interconnections.

Differential analysis aims at inferring global properties of nonlinear behaviours from the local analysis of the linearised dynamics. The novel notion of differential positivity extends linear positivity to the nonlinear setting: a nonlinear system is differentially positive if its linearization along trajectories leaves a cone (field) invariant. Notably, monotone systems are differentially positive. Differential positivity extends monotonicity to manifolds, replacing order relations with local orders. The property strongly restricts the asymptotic nonlinear behavior, through suitable extensions of Perron-Frobenius theory and of results on contraction of the Hilbert metric. Motivated by the importance of positivity in linear systems theory, we discuss the relevance of the property for applications and how much the property restricts the behavior of open nonlinear systems.