e-BaCCuSS

Event-Based Control, Circuits, and Processing for Ultra-Low Power Consumption

Action Team

This team's goal is to achieve ultra-low power consumption in electronic circuits. To this end, we propose to study non-uniform, event-driven sensors and actuators, as well as energy-efficient signal processing in these systems.

Project Summary

One of the objectives is to develop a low-power vision sensor. Such an electronic circuit will be designed at the start of the project. The second topic concerns the optimal control of systems equipped with converters. The focus is on studying non-smooth dynamic systems. For nonlinear control systems, the possibility of updating control inputs only when certain events occur will also be investigated. Thus, the observation and control of event-based dynamic systems will also be studied. These events may originate from a state function or from the measured output alone. Finally, two demonstrators will be built to illustrate and integrate all the results obtained in the project. For all research areas, optimization objectives will be addressed, such as minimizing the number of level crossings required to recover a signal within a given signal class.

The applications we are considering are ultra-low-power embedded systems. More specifically, these applications involve event-driven architectures as microelectronic components. Practical applications include medical devices and minimizing power consumption in networked systems. Applications of event-triggered control for nonlinear systems, or for non-smooth systems, include the control of biomimetic robots (such as micro-flying artificial insects) and mechanical systems with first- or second-order constraints (such as the control of dynamic objects with shocks and constraints on state variables).

This team is supported by the Modeling and Simulation of the Physical World (SIM) and Pervasive Computing Systems (PCS) research areas at PERSYVAL-Lab.

Meetings and News

Conferences

  • The 8th IFAC Symposium on Mechatronic Systems (MECHATRONICS 2019) and the 11th IFAC Symposium on Nonlinear Control Systems (NOLCOS 2019) are being held as a joint conference.
  • 4th International Conference on Event-Based Control, Communication, and Signal Processing (EBCCSP'18).
  • 3rd International Conference on Event-Based Control, Communication, and Signal Processing (EBCCSP), May 24–26, 2017, Madeira, Portugal.
  • Many team members are involved in the program and organization of EBCCSP'17: invited sessions, keynote lectures, and program chairs.
  • 2nd IEEE International Conference on Event-Based Control, Communication, and Signal Processing (EBCCSP), June 13–15, 2016, Kraków, Poland.
  • 1st IEEE International Conference on Event-Based Control, Communication, and Signal Processing (EBCCSP), June 17–19, 2015, Kraków, Poland. http://home.agh.edu.pl/~ebccsp15/

Publications

  • Nacim Meslem, Christophe Prieur. Event-Based Stabilizing Controller Using a State Observer. First International Conference on Event-Based Control, Communication, and Signal Processing, Jun 2015, Krakow, Poland. 2015. <hal-01181177>
  • Nacim Meslem, Christophe Prieur. Event-based controller synthesis by bounding methods. European Journal of Control, 2015, 26, pp. 12-21.  <hal-01235617>
  • Brigitte Bidégaray-Fesquet, Laurent Testard, Traitement de signaux non uniformes : application en électronique, SMAI 2015 - 7e Biennale Française des Mathématiques Appliquées et Industrielles, Jun 2015, Les Karellis, France. 2015. <hal-01228968>
  • Brigitte Bidégaray-Fesquet, Noise and offset in the IIR filtering of event-based sampled data, EBCCSP 2015 - 1st International Conference on Event-Based Control, Communication, and Signal Processing, Jun 2015, Cracovie, Poland. IEEE, pp.1-4, 2015, <10.1109/EBCCSP.2015.7300694>, <hal-01228965>
  • Laurent Fesquet, Brigitte Bidégaray-Fesquet, “Digital Filtering with non-uniformly sampled data: from the algorithm to the implementation” in “Event-Based Control and Signal Processing”, Ed. Marek Miskowicz, Publisher CRC Taylor & Francis, 2015. <hal-01228969>
  • Amani Darwish, Leandro M. G. Rocha, Laurent Fesquet, Gilles Sicard, "Design of a Fully Asynchronous Image Sensor Reading System”, Conference on Design of Circuits and Integrated Systems(DCIS), Estoril, Portugal - November 25-27, 2015. <hal-01293867>
  • Cansu Arslan, Julien Poujaud, Laurent Fesquet, "A method to automatically determine the Level-Crossing thresholds in non-uniform sampling and Processing”, 1st IEEE International Conference on Event-Based Control, Communication, and Signal Processing (EBCCSP), June 17-19, 2015, Krakow, Poland. <hal-01293857>
  • Amani Darwish, Laurent Fesquet, Gilles Sicard, “RTL Simulation of an Asynchronous Reading Architecture for an Event-driven Image Sensor”, 1st IEEE International Conference on Event-Based Control, Communication, and Signal Processing (EBCCSP), June 17-19, 2015, Krakow, Poland. <hal-01293872>
  • Taha Beyrouthy, Laurent Fesquet, Robin Rolland, "Data Sampling and Processing: Uniform vs. Non-Uniform Schemes”, 1st IEEE International Conference on Event-Based Control, Communication, and Signal Processing (EBCCSP), June 17-19, 2015, Krakow, Poland <hal-01293879>
  • Jean Simatic, Laurent Fesquet, Brigitte Bidégaray-Fesquet, “Correctly Sizing FIR Filter Architecture in the Framework of Non-uniform Sampling”, SampTA Conference, May 25-29, 2015, at American University in Washington, DC, pp 269 - 273, DOI: 10.1109/SAMPTA.2015.7148894. <hal-01187290>
  • Laurent Fesquet, Amani Darwish, Gilles Sicard, "Sampling circuits for 1D and 2D sensors for low-power purpose”, SampTA Conference, May 25-29, 2015, at American University in Washington, DC, pp 430 - 434, DOI: 10.1109/SAMPTA.2015.7148927. <hal-01187353>
  • J. Simatic, Rodrigo Possamai Bastos, Laurent Fesquet, High-level synthesis for event-based systems, Second International Conference on Event-Based Control, Communications, and Signal Processing (EBCCSP 2016), Jun 2016, Krakow, Poland. <hal-01345745>
  • Brigitte Bidégaray-Fesquet, Laurent Fesquet, Levels, peaks, slopes... which sampling for which purpose?, Second International Conference on Event-Based Control, Communications, and Signal Processing (EBCCSP 2016), Jun 2016, Krakow, Poland. <hal-01324990>
  • Taha Beyrouthy, Ahmed Roshdy, Mohammad Salman, Saeed Mian Qaisar, Laurent Fesquet, Asynchronous implementation of an event-driven adaptive filter,  Second International Conference on Event-Based Control, Communications, and Signal Processing (EBCCSP 2016), Jun 2016, Krakow, Poland. <hal-01345748>
  • Jean Simatic, Abdelkarim Cherkaoui, Rodrigo Possamai Bastos, Laurent Fesquet, New asynchronous protocols for enhancing area and throughput in bundle-data pipelines, 29th Symp. on Integrated Circuits and Systems Design (SBCCI 2016), 2016, Belo Horizonte, Brazil. <hal-01345749>
  • Laurent Fesquet, Jean Simatic, Amani Darwish, Abdelkarim Cherkaoui, Event-based design for mitigating energy in electronic systems, OAGM & ARW Joint Workshop on "Computer Vision and Robotics", May 2016, Wels, Austria, 2016. <hal-01345715>
  • Jean Simatic, Rodrigo Possamai Bastos, Laurent Fesquet, AHLS_DESYNC: A Desynchronization Tool For High-Level Synthesis of Asynchronous Circuits, Design, Automation and Test in Europe (DATE 2016), Dresden, Germany, 14-18 March, 2016. <hal-01293842>
  • Nacim Meslem, Christophe Prieur. Using the monotone property and sensors placement as basic tools to design set-membership state estimators. 22nd International Symposium on Mathematical Theory of Networks and Systems, Jul 2016, Minneapolis, United States. pp.403--410, MTNS 2016. <hal-01347770>
  • Fairouz Zobiri, Nacim Meslem, Brigitte Bidégaray-Fesquet. Event-Based Sampling Algorithm for Setpoint Tracking Using a State-Feedback Controller. 2nd International Conference on Event Based Control, Communication and Signal Processing (EBCCSP 2016), Jun 2016, Cracovie, Poland. IEEE, EBCCSP 2016. <hal-01364026>
  • Alexandre Vieira, Bernard Brogliato, Christophe Prieur, On the optimal control of linear complementarity systems, IFAC WC 2017, Jul 2017, Toulouse, France. <hal-01493188>
  • Sophie Germain, Sylvain Engels, Laurent Fesquet, “Event-Based Design Strategy for Circuit Electromagnetic Compatibility", 3rd International Conference on Event-Based Control, Communication and Signal Processing, May 24-26, 2017, Funchal, Madeira, Portugal. <hal-01514356>
  • Saeed Mian Qaisar, Jean Simatic, Laurent Fesquet, "High Level Synthesis of an Event-Driven Windowing Process”, 3rd International Conference on Event-Based Control, Communication and Signal Processing, May 24-26, 2017, Funchal, Madeira, Portuga.l <hal-01514220>
  • Amani Darwish, Hassan Abbas, Laurent Fesquet, Gilles Sicard, "Event-driven Image Sensor Application: Event-driven Image Segmentation", 3rd International Conference on Event-Based Control, Communication and Signal Processing, May 24-26, 2017, Funchal, Madeira, Portugal. <hal-01514221>
  • Ali Skaf, Jean Simatic, Laurent Fesquet, ”Seeking Low-power Synchronous/Asynchronous Systems: A FIR Implementation Case Study”, IEEE International Symposium on Circuits and Systems (ISCAS 2017), May 28-31, 2017, Baltimore, MD, USA. <hal-01514224>
  • Jean Simatic, Abdelkarim Cherkaoui, François Bertrand, Rodrigo Possamai Bastos, Laurent Fesquet, "A practical framework for specification, verification and design of self-timed pipelines", 23rd IEEE International Symposium on Asynchronous Circuits and Systems (Async 2017), May 21-24 2017, San Diego, California, USA. <hal-01512247>
  • Fairouz Zobiri, Nacim Meslem, Brigitte Bidégaray-Fesquet. "Event-Triggered Stabilizing Controllers Based on an Exponentially Decreasing Threshold". 3rd International Conference on Event Based Control, Communication and Signal Processing (EBCCSP 2017), May 2017, Funchal, Portugal.  <hal-01514134>
  • Brigitte Bidégaray-Fesquet, Nacim Meslem, Fairouz Zobiri. "Suivi de trajectoire évènementiel". SMAI 2017 - 8e Biennale Française des Mathématiques Appliquées et Industrielles, Jun 2017, La Tremblade, France. 2017. <hal-01514129>
  • François Bertrand, Jean Simatic, Abdelkarim Cherkaoui, Anthony Maure, Laurent Fesquet, "CAR: on the highway towards desynchronization", 24th IEEE International Conference on Electronics, Circuits and Systems (ICECS), Batumi, Georgia, December 5-8, 2017. <hal-01626177>
  • Sophie Germain, Sylvain Engels, Laurent Fesquet. A Design Flow for Shaping Electromagnetic Emissions in Micropipeline Circuits. 24th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC 2018), May 2018, Vienna, Austria. 2018. <hal-01726928>
  • Sophie Germain, Sylvain Engels, Laurent Fesquet. Shaping Electromagnetic Emissions of Event-Driven Circuits Thanks to Genetic Algorithms. Third International Conference on Advances in Signal, Image, and Video Processing (SIGNAL 2018), May 2018, Nice, France. <hal-01827416> (Best paper award)
  • Brigitte Bidégaray-Fesquet, Laurent Fesquet. Infinite Impulse Response Filters for Nonuniform Data. 3rd International Conference on Advances in Signal, Image and Video Processing (SIGNAL 2018), May 2018, Nice, France. <hal-01802340>
  • Brigitte Bidégaray-Fesquet. An event-based point of view on the control of insulin-dependent diabetes. 4th International Conference on Event Based Control, Communication, and Signal Processing (EBCCSP 2018), Jun 2018, Perpignan, France. 2018. <hal-01802365>
  • Rodrigo Iga Jadue, Sylvain Engels, Laurent Fesquet. An Event-Based Strategy for ASK demodulation. 5th International Conference on Event-Based Control, Communication, and Signal Processing, May 2019, Vienna, Austria. <hal-02157360>
  • Laurent Fesquet, Mohamed Akrarai, Gilles Sicard, Mamadou Diallo. Event-Based Image Sensors. 5th International Conference on Event-Based Control, Communication, and Signal Processing, May 2019, Vienna, Austria. <hal-02157361>
  • Yoan Decoudu, Jean Simatic, Pauline Alexandre, Katell Morin-Allory, Laurent Fesquet. Comparison of Synchronous and Asynchronous FIR Filter Architecture. 5th International Conference on Event-Based Control, Communication, and Signal Processing, May 2019, Vienna, Austria. <hal-02157364>
  • Brigitte Bidégaray-Fesquet, Laurent Fesquet. A new synthesis approach for non-uniform filters in the log-scale: proof of concept. 5th International Conference on Event-Based Control, Communication, and Signal Processing, May 2019, Vienna, Austria. <hal-02157365>
  • Fairouz Zobiri, Nacim Meslem, Brigitte Bidégaray-Fesquet. Event-Based Integral Control for Output Disturbance Rejection. 5th International Conference on Event-Based Control, Communication, and Signal Processing, May 2019, Vienna, Austria. <hal-02157368>
  • A. Vieira, B. Brogliato, and C. Prieur, Optimality conditions for the minimal time problem for complementarity systems, Joint 8th IFAC Symposium on Mechatronic Systems (MECHATRONICS'19) and 11th IFAC Symposium on Nonlinear Control Systems (NOLCOS'19), Vienna, Austria, 2019. <hal-01856054>

Keynote Speeches

  • Laurent Fesquet, "Event-based design for energy mitigation in electronic systems," OAGM & ARW Joint Workshop on "Computer Vision and Robotics," May 11–13, 2016, Wels, Austria.
  • Laurent Fesquet, Amani Darwish, Gilles Sicard, Low-power event-driven image sensor, 1st International Conference on Advances in Signal, Image and Video Processing (SIGNAL 2016), June 2016, Lisbon, Portugal. <hal-01345718>
  • Laurent Fesquet (keynote), Jean Simatic, Amani Darwish, Abdelkarim Cherkaoui, ”From events to data-driven processing”, 3rd International Conference on Event-Based Control, Communication and Signal Processing (EBCCSP 2017), May 24-26, 2017, Funchal, Madeira, Portugal <hal-01514219>
  • Laurent Fesquet, Sophie Germain, Jean Simatic, Abdelkarim Cherkaoui, Tugdual Le Pelleter, et al.. Event-based processing: a new paradigm for low-power. 19th IEEE Mediterranean Electrotechnical Conference (IEEE Melecon’18), May 2018, Marrakesh, Morocco. <hal-01726778>
  • Laurent Fesquet. Sensing and sampling for low-power applications. Third International Conference on Advances in Signal, Image and Video Processing (SIGNAL 2018), May 2018, Nice, France. 2018. <hal-01827401> (Keynote speech)
  • Laurent Fesquet, Brigitte Bidégaray-Fesquet. Asynchronous Filters. 4th International Conference on Event-Based Control, Communications, and Signal Processing (EBCCSP 2018), Jun 2018, Perpignan, France. 2018. <hal-01827398> (Keynote speech)
  • Christophe Prieur (plenary lecture),Sampled Control of Linear Hyperbolic Systems, 44th National Congress on Numerical Analysis (CANUM), Cap d'Agde, June 2018.

Thesis by Fairouz Zobiri

  • Start date: October 2015
  • Title: Sampling Optimization for Signal Processing and Control of Event-Driven Systems
  • Supervisors: Brigitte Bidegaray-Fesquet, Jean Kuntzmann Laboratory, and Nacim Meslem, Gipsa-lab
  • Abstract: This thesis is part of the E-BaCCuSS (Event-Based Control, Circuits and Processing towards Ultra-Low Power Consumption) action team, which has recently been designated as part of the PERSYVAL-Lab Center of Excellence. This action team brings together five laboratories (CEA-LETI, Gipsa-lab, INRIA, LJK, TIMA) and is therefore highly multidisciplinary in nature. The proposed work builds on previous research between the LJK and TIMA laboratories on signal processing for asynchronous systems with non-uniform sampling, and between the Gipsa-lab and TIMA laboratories on robust power consumption control systems. This work has led to the discovery and hardware implementation of efficient, low-power algorithms, though using standard sampling thresholds. The goal of this thesis is to optimize these algorithms by using thresholds constructed dynamically based on the application and signals, and by improving processing or control techniques. Applications to embedded systems are planned within the E-BaCCuSS project, particularly for medical devices. The mathematical justification of the algorithms’ performance is also a key challenge to ensure their adoption by industry. It will be the focus of particular attention within the thesis.

Published on December 9, 2024

Updated on March 11, 2025