Suche

François Grégory

Professeur-e HES Associé-e

Hauptkompetenzen

Process Optimization

Real-Time Optimization

Automatic Control

Process monitoring and control

Systems Modelling

Energy Systems

Fuel Cells

Hauptvertrag

Professeur-e HES Associé-e

Telefon-Nummer: +41 58 606 82 19

Büro: ENP.23.N412

HES-SO Valais-Wallis - Haute Ecole d'Ingénierie
Rue de l'Industrie 23, 1950 Sion, CH

Bereich
Technique et IT

Hauptstudiengang
Systèmes industriels

BSc HES-SO en Systèmes industriels - HES-SO Valais-Wallis - Haute Ecole d'Ingénierie

mécatronique

2021

A robust modifier adaptation method via Hessian augmentation using model uncertainties

Scientifique

Jack Speakman, Aris Papasavvas, Grégory François

Computers and Chemical Engineering, 2021 , vol. 99, pp. 28-40

Link zur Publikation

2020

Real-time optimization via modifier adaptation of closed-loop processes using transient measurements

Scientifique

Jack Speakman, Grégory François

Computers and Chemical Engineering, 2020 , vol. 140

Link zur Publikation

Output modifier adaptation with filter-based constraints

Scientifique

Aris Papasavvas, Grégory François

Journal of Process Control, 2020 , vol. 87, pp. 37-53

Link zur Publikation

2019

Real-Time Optimisation of Closed-Loop Processes Using Transient Measurements

Scientifique

Jack Speakman, Grégory François

Computer Aided Chemical Engineering, 2019 , vol. 46, pp. 1249-1254

Link zur Publikation

Filter-based additional constraints to relax the model adequacy conditions in modifier adaptation

Scientifique

Aris Papasavvas, Grégory François

IFAC-PapersOnLine, 2019 , vol. 52, no 1, pp. 58-63

Link zur Publikation

Filter-based Constraints to Easier Plant Feasibility in Modifier Adaptation Schemes

Scientifique

Aris Papasavvas, Grégory François

Computer-Aided Chemical Engineering, 2019 , vol. 46, pp. 1267-1272

Link zur Publikation

Internal Modifier Adaptation for the Optimization of Large-Scale Plants with Inaccurate Models

Scientifique

Aris Papasavvas, Grégory François

Industrial & Engineering Chemistry Research, 2019 , vol. 58, no 30

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2018

Real-Time Optimizing Control of an Experimental Crosswind Power Kite

Scientifique

Sean Costello, Grégory François, Dominique Bonvin

IEEE Transactions on Control Systems Technology, 2018 , vol. 6, no 2, pp. 507-522

Link zur Publikation

2017

Use of Transient Measurements for Static Real-Time Optimization

Scientifique

Tafarel De Avila Ferreira, Grégory François, Alejandro Marchetti, Dominique Bonvin

IFAC-PapersOnLine, 2017 , vol. 50, no 1, pp. 5737-5742

Link zur Publikation

Crosswind kite control – A benchmark problem for advanced control and dynamic optimization

Scientifique

Sean Costello, Grégory François, Dominique Bonvin

European Journal of Control, 2017 , vol. 35, pp. 1-10

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Chapter 11- Control and Optimization of Batch Chemical Processes

Chapter

Dominique Bonvin, Grégory François

Dans Rohani Sohrab, Coulson and Richardson's Chemical Engineering (Fourth Edition). 2017, UK : Butterworth-Heinemann

Link zur Publikation

2016

Modifier adaptation for real-time optimization - Methods and applications

Scientifique

Alejandro Marchetti, Grégory François, Timm Faulwasser, Dominique Bonvin

Processes, 2016 , vol. 4, no 4, pp. 55-90

Link zur Publikation

Extension of modifier adaptation for controlled plants using static open-loop models

Scientifique

Grégory François, Sean Costello, Alejandro Marchetti, Dominique Bonvin

Computers and Chemical Engineering, 2016 , vol. 93, no 4, pp. 361-371

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A Directional Modifier-Adaptation Algorithm for Real-Time Optimization

Scientifique

Sean Costello, Grégory François, Dominique Bonvin

Journal of Process Control, 2016 , vol. 39, pp. 64-76

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2015

On the use of transient information for static real-time optimization

Scientifique

Alejandro Marchetti, Grégory François, Dominique Bonvin

Computing and Systems Technology Division 2015 - Core Programming Area at the 2015 AIChE Annual Meeting, 2015 , vol. 1, pp. 47-49

Link zur Publikation

Directional real-time optimization applied to a kite-control simulation benchmark

Scientifique

Sean Costello, Grégory François, Dominique Bonvin

Proceedings of the European Control Conference, 2015

Link zur Publikation

Analysis of the maximum efficiency of kite-power systems

Scientifique

Sean Costello, Grégory François, Dominique Bonvin

Journal of Renewable and Sustainable Energy, 2015 , vol. 7, no 5

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A therapy parameter-based model for predicting blood glucose concentrations in patients with type 1 diabetes

Scientifique

Alain Bock, Grégory François, Denis Gillet

Computer Methods and Programs in Biomedicine, 2015 , vol. 118, no 2, pp. 107-123

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Application of Real-Time Optimization Methods to Energy Systems in the Presence of Uncertainties and Disturbances

Scientifique

Grégory François

TMC Academic Journal, 2015 , vol. 9, no 2, pp. 19-40

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2014

Modifier adaptation for constrained closed-loop systems

Scientifique

Sean Costello, Grégory François, Dominique Bonvin, Alejandro Marchetti

IFAC PapersOnline, 2014 , vol. 47, no 3

Link zur Publikation

Use of transient measurements for the optimization of steady-state performance via modifier adaptation

Scientifique

Grégory François, Dominique Bonvin

Industrial & Engineering Chemistry Research, 2014 , vol. 53, no 13, pp. 5148-5159

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Equivalence between neighboring-extremal control and self-optimizing control for the steady-state optimization of dynamical systems

Scientifique

Grégory François, Bala Srinivasan, Dominique Bonvin

Industrial & Engineering Chemistry Research, 2014 , vol. 53, no 18, pp. 7470-7478

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Implementation techniques for the SCFO experimental optimization framework

Scientifique

Gene Bunin, Grégory François, Dominique Bonvin

ArXiV, 2014

Link zur Publikation

On linear and quadratic Lipschitz bounds for twice continuously differentiable functions

Scientifique

Gene Bunin, Grégory François, Dominique Bonvin

ArXiV, 2014 , pp. 1-3

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Real-Time Optimization: Optimizing the Operation of Energy Systems in the Presence of Uncertainty and Disturbances

Scientifique

Grégory François, Dominique Bonvin

Proceedings of the 13th SET Conference, 2014 , vol. E40137

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Thèse d'Habilitation à Diriger les Recherches: Optimisation en Temps Réel: Optimiser les Performances des Procédés Chimiques malgré l’Incertitude et les Erreurs de Modélisation

Thèses

Thèse d'Habilitation à Diriger les Recherches

Grégory François

2014, Nancy : Université de Lorraine

2013

Use of convex model approximations for real-time optimization via modifier adaptation

Scientifique

Grégory François, Dominique Bonvin

Industrial & Engineering Chemistry Research, 2013 , vol. 52, no 33

Link zur Publikation

The SCFO Real-Time Optimization Solver: Users' Guide (version 0.9.4)

Rapport

Gene Bunin, Grégory François, Dominique Bonvin

2013, Lausanne : EPFL, 86 p.

Link zur Publikation

Zusammenfassung:

This is an open-source software for real-time optimisation of uncertain systems, that is, with imperfect models.

Real-time optimization when plant and model have different sets of inputs

Scientifique

Sean Costello, Grégory François, Dominique Bonvin

IFAC Proceedings Volumes, 2013 , vol. 46, no 32, pp. 39-44

Link zur Publikation

Real-time optimization for kites

Scientifique

Sean Costello, Grégory François, Dominique Bonvin

IFAC Proceedings Volumes, 2013 , vol. 46, no 12, pp. 64-69

Link zur Publikation

Measurement-Based Real-Time Optimization of Chemical Processes

Scientifique

Grégory François, Dominique Bonvin

Advances in Chemical Engineering, 2013 , vol. 43, pp. 1-50

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Iterative controller tuning by real-time optimization

Scientifique

Gene Bunin, Grégory François, Dominique Bonvin

IFAC Proceedings Volumes, 2013 , vol. 46, no 32, pp. 21-26

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From discrete measurements to bounded gradient estimates: A look at some regularizing structures

Scientifique

Gene Bunin, Grégory François, Dominique Bonvin

Industrial & Engineering Chemistry Research, 2013 , vol. 52, no 35

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A real-time optimization framework for the iterative controller tuning problem

Scientifique

Gene Bunin, Grégory François, Dominique Bonvin

Processes, 2013 , vol. 1, no 2

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Sufficient Conditions for Feasibility and Optimality of Real-Time Optimization Schemes – I. Theoretical Foundations

Scientifique

Gene Bunin, Grégory François, Dominique Bonvin

ArXiV, 2013

Link zur Publikation

Sufficient Conditions for Feasibility and Optimality of Real-Time Optimization Schemes – II. Implementation Issues

Scientifique

Gene Bunin, Grégory François, Dominique Bonvin

ArXiV, 2013

Link zur Publikation

Use of Transient Measurements for Real-Time Optimization via Modifier Adaptation

Scientifique

Grégory François

Récents Progrès en Génie des Procédés, 2013 , vol. 104

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2012

Run-to-Run MPC Tuning via Gradient Descent

Scientifique

Gene Bunin, Fernando Fraire Tirado, Grégory François, Dominique Bonvin

Computer-Aided Chemical Engineering, 2012 , vol. 30, pp. 927-931

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Exploiting local quasiconvexity for gradient estimation in modifier-adaptation schemes

Scientifique

Grégory François

Proceedings of 2012 American Control Conference (ACC), 2012 , pp. 2806-2811

Link zur Publikation

Experimental real-time optimization of a solid oxide fuel cell stack via constraint adaptation

Scientifique

Gene Bunin, Zacharie Wuillemin, Grégory François, Arata Nakajo, Leonidas Tsikonis, Dominique Bonvin

Energy, 2012 , vol. 39, no 1, pp. 54-62

Link zur Publikation

Comparison of six implicit real-time optimization schemes

Scientifique

Grégory François, Bala Srinivasan, Dominique Bonvin

Journal Européen des Systèmes Automatisés, 2012 , vol. 46, no 2-3, pp. 291-305

2011

Control of Polymerization Processes

Chapter

Grégory François

Dans William Levine, The Control Handbook, 2nd Edition. 2011, London, UK : CRC Press

Preclinically assessed optimal control of postprandial glucose excursions for type 1 patients with diabetes

Scientifique

Thierry Prud'homme, Alain Bock, Grégory François, Denis Gillet

Proceedings of the 2011 IEEE International Conference on Automation Science and Engineering, 2011 , pp. 702-707

Link zur Publikation

Optimal Service Pricing for a Cloud Cache

Scientifique

Verena Kantere, Debabrata Dash, Grégory François, Sofia Kyriakopoulou, Anastasia Ailamaki

IEEE Transactions on Knowledge and Data Engineering, 2011 , vol. 23, no 9, pp. 1345-1358

Link zur Publikation

Modifier Adaptation for Run-to-Run Optimization of Transient Processes

Scientifique

Sean Costello, Grégory François, Bala Srinivasan, Dominique Bonvin

IFAC Proceedings Volumes, 2011 , vol. 44, no 1

Link zur Publikation

Input filter design for feasibility in constraint-adaptation schemes

Scientifique

Gene Bunin, Grégory François, Bala Srinivasan, Dominique Bonvin

IFAC Proceedings Volumes, 2011 , vol. 44, no 1, pp. 5585-5590

Link zur Publikation

Comparison of Gradient Estimation Methods for Real-time Optimization

Scientifique

Bala Srinivasan, Grégory François, Dominique Bonvin

Computer Aided Chemical Engineering, 2011 , vol. 29, pp. 607-611

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A Minimal Exercise Extension for Models of the Glucoregulatory System

Scientifique

Alain Bock, Grégory François, Thierry Prud'homme, Denis Gillet

Computer Aided Chemical Engineering, 2011 , vol. 29, pp. 1520-1524

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A globally convergent algorithm for the run-to-run control of systems with sector nonlinearities

Scientifique

Grégory François, Bala Srinivasan, Dominique Bonvin

Industrial & Engineering Chemistry Research, 2011 , vol. 50, no 3, pp. 1410-1418

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2010

Two-Layered Real-Time Optimization of a Solid Oxide Fuel Cell Stack

Scientifique

Gene Bunin, Grégory François, Dominique Bonvin

IFAC Proceedings Volumes, 2010 , vol. 43, no 5, pp. 847-852

Link zur Publikation

Experimental real-time optimization of a solid oxide fuel cell stack via constraint adaptation

Scientifique

Grégory François, Gene Bunin, Zacharie Wuillemin, Arata Nakajo, Leonidas Tsikonis, Dominique Bonvin

Proceedings of the 23rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS), 2010 , vol. V, pp. 141-148

2008

A prototype for on-line monitoring and control of energy performance for renewable energy buildings

Scientifique

Benjamin Paris, Julien Eynard, Grégory François, Thierry Talbert, Monique Polit

Proceedings of the Fifth International Conference on Informatics in Control, Automation and Robotics, 2008 , vol. 4, no ICINCO, pp. 125-130

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Gestion des ressources énergétiques d’un bâtiment: contrôle flou

Scientifique

Benjamin Paris, Julien Eynard, Grégory François, Thierry Talbert, Frédéric Thiéry

Proceedings of IBPSA France 2008, 2008

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2005

Use of measurements for enforcing the necessary conditions of optimality in the presence of constraints and uncertainty

Scientifique

Grégory François, Bala Srinivasan, Dominique Bonvin

Journal of Process Control, 2005 , vol. 15, no 6, pp. 701-712

Link zur Publikation

A globally convergent run-to-run control algorithm with improved rate of convergence

Scientifique

Grégory François, Bala Srinivasan, Dominique Bonvin

Proceedings of the 2005, American Control Conference, 2005, 2005 , vol. 3, pp. 1901-1906

Link zur Publikation

2004

Trajectory Following for the Optimization of a Batch Polymerization Reactor

Scientifique

Carsten Welz, Grégory François, Bala Srinivasan

Proceedings of the BatchPro Symposium, 2004

Link zur Publikation

Run-to-run adaptation of a semiadiabatic policy for the optimization of an industrial batch polymerization process

Scientifique

Grégory François, Bala Srinivasan, Dominique Bonvin, Jose Hernandes Barajas, David Hunkeler

Industrial & Engineering Chemistry Research, 2004 , vol. 43, no 23, pp. 7238-7242

Thèse de Doctorat: Measurement-based run-to-run optimization of batch processes: application to industrial acrylamide copolymerization

Thèses

Grégory François

2004, Lausanne : EPFL. 162 p.

Bonvin Dominique, Srinivasan Bala

Link zur Publikation

Dynamic optimization of batch emulsion polymerization using MSIMPSA, a simulated-annealing-based algorithm

Scientifique

Ricardo Lima, Grégory François, Bala Srinivasan, Romualdo Salcedo

Industrial & Engineering Chemistry Research, 2004 , vol. 43, no 24, pp. 7796-7806

2003

Convergence analysis of run-to-run control for a class of nonlinear systems

Scientifique

Grégory François, Bala Srinivasan, Dominique Bonvin

Proceedings of the 2003 American Control Conference, 2003 , vol. 4, pp. 3032-3037

Link zur Publikation

2002

Run-to-run optimization of batch emulsion polymerization

Scientifique

Grégory François, Bala Srinivasan, Dominique Bonvin

IFAC Proceedings Volumes, 2002 , vol. 35, no 1, pp. 363-368

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2018

Modifier Adaptation Adaptation for Real-Time Optimization – Basic Idea and Recent Developments

Conference

Alejandro Marchetti, Grégory François, Timm Faulwasser, Dominique Bonvin

7th International Conference on High Performance Scientific Computing. Modeling, Simulation and Optimization of Complex Processes, 19.03.2018 - 23.04.2018, Hanoi, Vietnam

Link zur Konferenz

2017

Overview of the recent developments in Real-Time Optimisation via Modifier Adaptation

Conference

Grégory François

16eme congres de la Société Francaise de Genie des Procédés, 11.07.2017 - 13.07.2017, Nancy, France

Link zur Konferenz

Optimal service pricing for a cloud cache

Conference

Verena Kantere, Debabrata Dash, Grégory François, Sofia Kyriakopoulou, Anastasia Ailamaki

10th Hellenic Data Management Symposium, 17.06.2017 - 17.06.2017, Athens, Greece

2013

Real-Time Optimization of Chemical Processes

Conference

Plenary Talk

Dominique Bonvin, Grégory François, Gene Bunin

14eme Congres de la SFGP, 08.10.2013 - 10.10.2013, Lyon, France

2010

Model Predictive Control of an Experimental Solid Oxide Fuel Cell Stack

Conference

Grégory François

7th Symposium on Fuel Cell Modeling and Experimental Validation, 16.04.2010 - 16.04.2021, Morges, Switzerland

Link zur Konferenz

Errungenschaften