Publications related to Digital actors for interactive television

Reduced basis method for parametrized elliptic optimal control problems

Alfio Quarteroni, Gianluigi Rozza, Andrea Manzoni, Federico Negri

We propose a suitable model reduction paradigm -- the certied reduced basis method (RB) -- for the rapid and reliable solution of parametrized optimal control problems governed by partial dierential equations (PDEs). In particular, we develop the methodolo ...

Society for Industrial and Applied Mathematics2013

Feedback Communication and Control Over a Single Channel

Michael Christoph Gastpar

This paper explores the problem of feedback coding for a channel whose output is simultaneously used for two purposes: it is decoded to establish reliable communication, and it is used to control a dynamical system. In general, there is a tradeoff between ...

Institute of Electrical and Electronics Engineers2013

A real-time control system architecture for industrial power amplifiers

Faran Ahmed Qureshi

Power amplifiers are a highly important component in a range of industrial applications, such as, servo-drives, magnetic resonance imaging, energy systems, and audio. The control system for power amplifiers should satisfy a range of requirements, e. g., of ...

Ieee2013

Forced reattachment in separated flows: a variational approach to recirculation length reduction

François Gallaire, Edouard Boujo

Sensitivity analysis is used to design an open-loop control for separated flows. The length of the recirculation region

l_c

is expressed as a cost functional, and its sensitivity to actuation is derived analytically. This analysis allows to identify regi ...

2013

Functional Modeling and Energetic Macroscopic Representation of Modular Multilevel Converters

Alfred Rufer, Michail Vasiladiotis, Nicolas Cherix

A key feature of Modular Multilevel Converters (MMC) is the continuous and independent nature of the branch currents. Therefore, a decoupled control of the line and partial bus currents is possible, unlike for classical topologies. To this end, several con ...

2012

Reduced basis method for parametrized optimal control problems governed by PDEs

Federico Negri

This master thesis aims at the development, analysis and computer implementation of effcient numerical methods for the solution of optimal control problems based on parametrized partial differential equations. Our goal isfto develop a new approach based on ...

2011

Sensorless Position Control of Piezoelectric Ultrasonic Motors

Markus Flückiger

This dissertation considers mechatronic systems driven by piezoelectric ultrasonic motors (PUM). The focus is set on optimal system design and sensorless position control. Mechatronic industry faces the challenge to deliver ever more efficient and reliable ...

EPFL2010

Energetic Macroscopic Representation and PSIM® simulation: application to a DC/DC converter input filter stability

Philippe Barrade

Simulation is a key issue in the design of control electrical systems. Simulation packages using component library, such as PSIM®, are very useful to achieve this goal. The simulation model is thus easily built from the system topology (structural model). ...

2010

Learning and Control of UAV maneuvers Based on Demonstrations

Aude Billard, Seyed Mohammad Khansari Zadeh

Many maneuvers of Unmanned Aerial Vehicles (UAV) can be considered within a framework of trajectory following. Though this issue can differ from one application to another, they all share the same problem of finding an optimal path (or signal) to perform t ...

2009

Neighboring-Extremal Control for Singular Dynamic Optimization Problems. II- Multiple-Input Systems

Dominique Bonvin, Benoît Chachuat, Sébastien Gros

Dynamic optimization provides a unified framework for improving process operations while taking operational constraints into account. In the presence of uncertainty, measurements can be incorporated into the optimization framework for tracking the optimum. ...

2009

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Reduced basis method for parametrized elliptic optimal control problems

Feedback Communication and Control Over a Single Channel

A real-time control system architecture for industrial power amplifiers

Forced reattachment in separated flows: a variational approach to recirculation length reduction

Functional Modeling and Energetic Macroscopic Representation of Modular Multilevel Converters

Reduced basis method for parametrized optimal control problems governed by PDEs

Sensorless Position Control of Piezoelectric Ultrasonic Motors

Energetic Macroscopic Representation and PSIM® simulation: application to a DC/DC converter input filter stability

Learning and Control of UAV maneuvers Based on Demonstrations

Neighboring-Extremal Control for Singular Dynamic Optimization Problems. II- Multiple-Input Systems

Reduced basis method for parametrized elliptic optimal control problems

A real-time control system architecture for industrial power amplifiers

Learning and Control of UAV maneuvers Based on Demonstrations

Sensorless Position Control of Piezoelectric Ultrasonic Motors

Feedback Communication and Control Over a Single Channel

Forced reattachment in separated flows: a variational approach to recirculation length reduction

Reduced basis method for parametrized optimal control problems governed by PDEs

Energetic Macroscopic Representation and PSIM® simulation: application to a DC/DC converter input filter stability

Functional Modeling and Energetic Macroscopic Representation of Modular Multilevel Converters

Neighboring-Extremal Control for Singular Dynamic Optimization Problems. II- Multiple-Input Systems