Realistic motion generation for anthropomorphic systems

This work is devoted to Digital Human motion generation, for manufacturing (specifically, for design, maintenance, operator training, workstation design and ergonomics, ...), health (postures for surgery, rehabilitation, ...), or entertainment industry (animation for games, movies,...).

Based on complementary skills and developments of Gepetto LAAS team, and CEA LIST team, in terms of path planning (HPP), dynamic motion control of anthropomorphic systems, the objective of this post doc is to combine both approaches, a global one, dealing mainly with geometric and quasi-static constraints and characteristics, and a local one, dealing with dynamics and taking into account human movement characteristics (motor primitives, minimizing cost criteria, etc ...).

New electrode materials for Na-ion batteries

Na-ion battery is a challenging technology to replace Li-ion battery as it is cost competitve and may allow better cycle life. Sodium has also similar property to Lithium (light and electronegative element).
The eletrochemistry of the sodium is somewhat different of lithium with much less studies reported in the litterature.
The work will consist in the elaboration and characterization of promising electrode materials for Na-ion batteries.

Reverse engineering of an internal permanent magnet synchronous electrical machine and modelisation of evolutions based on new new magnet technologies developped in CEA

The study aims at studying and modeling a synchronous electric motor with magnet buried in the rotor. This study begins with a preliminary phase of retro engineering and modeling of an existing machine. A second phase will focus on the design and the modeling of a new machine integrating a new technology of magnets developed in the CEA.

In the context of electric transportation, if batteries and energy storage are still the weak point of the energy chain, the electric motor remains a central part that has to be optimized to raise efficiency. For twenty years, all motor structures have been studied and tested: dc motors, synchronous machines with permanent magnets, asynchronous machines and switched reluctance machines. This study will focus on a synchronous machine with magnets buried into the rotor. This type of machine offers a natural ability of delivering at full load a constant power along a wide speed range, associated with a high efficiency. Moreover, power density can be improved by increasing maximal speed range.

The Post doc will be split into three parts:

1st phase:
Testing of an existing commercial electrical synchronous machine with magnets buried in the rotor and characterization of its components. These tests will be done on a motor test bench situated in the CEA

2nd phase:
Modeling of the commercial machine tested on the test bench and comparison of modeling results with experimental measurements from the first phase.

3rd phase:
Design and modeling of evolution of the machine tested and modeled in phases 1 and 2, integrating new technologies of magnets developped by the CEA.

Design of a control system of a plane based on distributed electric propulsion

The objective of this post doctorate is to design a control system to manage the electrical power on an electric plane proposed by many electrical turbines. The aim of the work is to demonstrate the possibility to increase the propulsion efficiency by using many cooperative electrical turbines placed judiciously on plane compare to a plane having only two or four turbine. Furthermore, one idea is to completely drive the plane by adjusting in real time the power of each electrical turbine taking advantage of their high reactivity compare to classical thermal turbines. The background required for that post doctorate is a good knowledge in control system and power electronic.