APPLICATION DES SYSTEMES STRUCTURES A L’ETUDE DU

Marie-Therese

Description

N e C SNetworked Controlled System Team Ph.D Proposal, NeCS-Team-Project Control Design tools for interconnected asynchronous systems Supervisor: Carlos Canudas de Wit, Email: [e-mail] Cell-phone : [phone] Director of research at the CNRS, and responsible of the NeCS joint GIPSA-lab-INRIA Team-project NeCS team web page : http://necs.inrialpes.fr Personal Web page : http://www.lag.ensieg.inpg.fr/canudas Scholarship: 1900 Brut approx, Opening period: March--Oct. 2008, Duration: 3 year. Context. NeCS is a joint CNRS (GIPSA-lab)-INRIA team. The team goal is to develop a new control framework for assessing problems raised by the consideration of new technological low-cost and wireless components, the increase of systems complexity and the distributed and dynamic location of sensors (sensor networks) and actuators. The team is a bi-located at INRIA (Montbonnot) and at the GIPSA-lab (at the Grenoble campus). This position will be funded by the ARAVIS project (from the Minalogic Grenoble cluster). The study will also be related to the EU FeedNetBack project which is a recently accepted EU STREP project in the Networked embedded and control systems area. The project addressed innovative problems of control co-design issues in control/communication/computation and energy management. A particular collaboration with the University of Seville may be in order. Topic description. ...

Informations

• Publié par: Apre
• Nombre de lectures: 38
• Langue: English

Extrait

Networked Controlled System Team

N e C S

Departement d’Automatique de Grenoble – ENSIEG – B.P. 46 – 38402 – Saint-Martin-d’Hères-Cedex

Ph.D Proposal,

NeCS-Team-Project

Control Design tools for interconnected asynchronous systems

Supervisor

: Carlos Canudas de Wit,

Email:

[e-mail]

Cell-phone :

+33 (0)6.85.70.73.16

Director of research at the CNRS, and responsible of the NeCS joint GIPSA-lab-INRIA Team-project

NeCS team web page :

http://necs.inrialpes.fr

Personal Web page :

http://www.lag.ensieg.inpg.fr/canudas

Scholarship

:

1900 Brut approx,

Opening period

: March--Oct. 2008,

Duration:

3 year.

Context

.

NeCS

is a joint CNRS (GIPSA-lab)-INRIA team. The team goal is to develop a new control

framework for assessing problems raised by the consideration of new technological low-cost and wireless

components, the increase of systems complexity and the distributed and dynamic location of sensors

(sensor networks) and actuators. The team is a bi-located at INRIA (Montbonnot) and at the GIPSA-lab (at

the Grenoble campus). This position will be funded by the ARAVIS project (from the Minalogic Grenoble

cluster). The study will also be related to the EU

FeedNetBack

project which is a recently accepted EU

STREP project in the Networked embedded and control systems area. The project addressed innovative

problems of control co-design issues in control/communication/computation and energy management. A

particular collaboration with the University of Seville may be in order.

Topic description.

The idea of studying asynchronously (non-uniformly sampled) systems comes from the

necessity of developing theoretical tools for the analysis of networked and embedded control systems,

which usually operated under variable resources like communication rates, computational loads and limited

amounts of energy. In many industry applications (i.e. vehicle control) controlled systems are often

interconnected by sharing common communication resources (CAN busses) suffering from with uncertainly

timing, variable delays, and jitter. This implies that many control block and sub-systems are formally

asynchronous interconnected while control design are most often design under a synchronized time-basis.

These types of systems can also be found in other fields such as remotely controlled systems, and more

generally in component-based control design where synchronous exchange of information is not feasible.

The aim of this thesis is to develop new mathematical tools for analysis and control design allowing

assessing such type of asynchronous systems. In references [1], and [2] below, we have recently explored

some possible research lines based in a passivity design for asynchronous interconnected systems [1],

which is primary based on the L_2—norm, while in [2], we have compared this design to the one that may

result from a small-gain design (L_infty—norm) using Scattering matrix transformation. In the thesis, we

would like to generalize these studies to other type of norm and formulations, but also to devise

constructive tools and its associated numeric algorithms.

Requested Work

.

The doctoral work will focus on the development of

analysis tools, and constructive

control design methodologies accounting with the asynchronous behavior mentioned above. An objective

of the thesis will also be the development of numerical tools. The student will participate to project

meetings (FeedNetBack), stays, visits, and elaboration of deliverables concerning these projects.

Candidate profile

.

Applicants should have an Engineering degree with a specialization in Control Theory.

Application should be send electronically with and a CV including the school and last year university

ranking. Applicants not filling this requirement will not be considered.

Bibliography

. See publications in NCS at : (

http://www-lag.ensieg.inpg.fr/canudas/

);

recent publications>

networked controlled systems.

[1]

J.R. Cueli and

C. Canudas-de-Wit, “ Passivity of Interconnected Asynchronous Discrete-Time

Systems”, IFAC Word Congress, Seul, Corea, Jully 2008.

[2]

M.Lopez-Martinez, C. Canudas-de-Wit and F.R. Rubio, “Passivity versus Small-Gain Properties of

AsynchronouslyInterconnected Linear Systems”, Submitted to an invited session, IEEE Conference on

Decision and Contro, Dec. 2008, Cancun, Mexico