About me
After an international experience of one year at the university of Lund, Sweden, I received my engineering degree in Physics with focus on space sciences from the university of Liege (ULg) in 2010.
I worked 10 months as a research engineer in the Dept. of Electrical Engineering and Computer Sciences at the university of Liege where I published one paper in the 4th International Conference on "Advanded Computational Methods in Engineering" 2011.
I'm currently doing a "young potential trainee" at Belgacom (largest telecommunications company in Belgium).
My interests encompass technologies, space applications, team sports and management of websites.
Paper published
François-Lavet, V. et al - (nov.2011) - Vectorial Incremental Nonconservative Consistent Hysteresis model - 5th International Conference on Advanded COmputational Methods in Engineering (ACOMEN)
Abstract
This paper proposes a macroscopic model for ferromagnetic hysteresis that is well-suited for finite element implementation. The model is readily vectorial and relies on a consistent thermodynamic formulation. In particular, the stored magnetic energy and the dissipated energy are known at all times, and not solely after the completion of closed hysteresis loops as is usually the case. The obtained incremental formulation is variationally consistent, i.e., all internal variables follow from the minimization of a thermodynamic potential.
Keywords : magnetism, hysteresis, irreversible phenomena, thermodynamics, finite elements, variational model.
Master thesis
Attitude and Determination Control Systems for the OUFTI nanosatellites (Satellites developped at the University of Liège) (Award for the best master theses 2010)
Abstract
OUFTI-1 is a cube with a size of 10 x 10 x 10 cm and a weight of at most one kilogram. It is the first satellite equipped with a recently-developed amateur radio digital-communication protocol: the D-STAR technology. Other experiments that will fly aboard OUFTI-1 are an innovative electrical power system as well as high-performance solar cells. The satellite is not required to point in one specific direction and the Attitude Determination and Control System (ADCS) subsystem relies on Passive Magnetic Attitude Stabilization (PMAS). The first part of this thesis presents this design made of a permanent magnet and hysteretic bars. The magnet orients the satellite along the Earth's magnetic field lines and the hysteretic bars damp its rotational velocities. The influence of the magnet on the hysteretic bars as well as the finite elongation of the bars are carefully studied.
OUFTI-2 is the next satellite in the series. Its size is planned to be twice the size of OUFTI-1 and its main payload will be a radiometer to perform a direct measurement of the net heating of the Earth. The radiometer is developed in cooperation with the Royal Meteorological Institute of Belgium and is called Sun-earth IMBAlance (SIMBA) radiometer. The second part of this master thesis focuses on the feasibility study of an active attitude control system which satisfies the requirements of the payload.
Keywords : attitude, control, satellite, passive, hysteresis, magnet, active, magnetic, torquer, reaction wheel.
Websites
Design and development of websites with the use of HTML, CSS, PHP, MySQL, GIMP...
