Objectives

The work developed in this group context for emerging applications and related societal concerns (renewable energy and electric vehicles or hybrids). This theme is not totally disconnected from the thematic diagnosis. Indeed, we are interested in the command mode (the presence of faults in the actuator). The energy management in light of its optimization has been a basic objective. In this context, we adapted the existing control techniques to optimize the energy behavior and dynamics of the electric actuator. In addition, we focus control technology from the advanced automatic.

Renewables

In terms of renewable energy through wind turbines and tidal turbines (huge potential in Britain), we are primarily interested in modeling multiphysics chain of production of electrical energy (resource - air or ocean current -, turbine, generator and inverter). We then addressed the constraints under control (defects, optimization of the electrical energy produced). In this context, a number of actions have led to the following results:

• Obtaining a Graduate Research Allocation to local authorities (BMO - Brest Metropole Oceane), following a tender for the first thesis on the recovery of energy from tidal currents using the tidal stream (Thesis defended 08/12/2009). This allocation has strengthened collaboration with the Research Institute of the Ecole Navale - IRENAV.
• Obtaining funding from local authorities (BMO, General Council of Finistère), following a tender for the establishment of an experimental bench for the emulation of a wind or tidal (October 2007 ). It should be noted that in this context, we have contributed to the emergence of a research Brest on marine energy that is recognized and supported by the Cluster Sea Britain. The bench trial of a power of 16 kW will be considered alongside the national platform of 7.5 kW G2Elab Laboratory (Grenoble).
• SEEDS funding by the GDR CNRS No. 2994 of an internal project called HYDROLIQUE (which carries the LBMS and animator) for mounting a structure that aims to introduce in 2011 a project of type ANR the problem Ocean Energy for actors with the SEEDS LBMS Brest, Brest IRENAV (Research Institute of the Ecole Navale, EA 3634), the GREAH (Research Group in Electrical and Control of Le Havre, EA 3220) and Le Havre 'IREENA (Institute of Electrical and Electronics Research of Nantes EA 1770), Nantes-St Nazaire and partner IFREMER (September 2007). Regarding the recovery of energy from ocean currents, the LBMS is now recognized by the Community National Electrical Engineering, through the GDR SEEDS as a center of competence.
• EFA (Teams Transversal Projects) of the European University of Brittany (UEB) in partnership with EA IRENAV 3634 (Naval Academy) and the UMR CNRS 8029 SATIE (ENS Cachan Antenne de Bretagne): Style and Design Modeling Systems Renewable Energies Marines (MOCOEMR) Leader: MEH Benbouzid.

Overall, in the context of tidal and wind power, the main results are:

• A tidal simulator validated experimentally.
• Robust control of a tidal turbine.
• Robust control of a wind problem with networks of defects.

The electric vehicle or hybrid

In this context, we are especially interested in the command chain electric propulsion constrained optimal management of electrical energy. It is particularly noted that in this work a model of the vehicle has been developed. This is important. Indeed, compared to the vast majority of work on the control of electric or hybrid vehicle, the control strategies that we developed are applied to the entire vehicle, taking into account its aerodynamics. In addition, our developments have been validated on a standard road cycle (ECE-15 driving cycle and EUDC).
Overall, under the vehicle, our main findings are:

• Optimizing energy performance of electric vehicles.
• Performance tuning in a couple of electric vehicles using multi-level inverters.
• The electric vehicle without mechanical differential.

Control and propulsion of autonomous underwater robots

The objective of this project is the study, analysis and development of nouv these technologies autonomous underwater robots to improve their ability to maneuver. The long term goal is to enable these robots to perform complex tasks such as maintenance of sites turbines, or tidal or offshore wind. In this context, a thruster coupled magneto-reconfigurable (PMCR) is being studied at LBMS. It allows thrust vectoring. A model was developed through collaboration with scientific and technical society Techniques and Magnetic Materials (TE2M) located in Brest and specialized in magnetic couplings. This engine is the precursor of a series of new solutions in propulsion underwater. A digital simulator, including nontrivial effects of the presence of water bodies, as well as dynamic coupling has been achieved in Scilab. This tool already allows us to evaluate the proposed solutions (such as PMCR) and we will soon provide a powerful and economic to test different control laws considered.

Control of actuators based on shape memory alloy

As part of a cross between the project team researchers ESE and MMA (Shabnam Arbab Chiran and Sylvain Calloch) around the shape memory alloys (SMAs), we are interested in the control of actuators based AMF . On the one hand, features highly nonlinear and time varying OGD complicate their control. Indeed, the cycles of heating and cooling exhibit hysteresis, and over the material parameters change significantly during the cycles. On the other hand, the computational real-time control law deprives us of the use of models developed within the MMA team. Therefore we have adapted and developed new patterns of control without a model or restricted model. These commands are based on algebraic methods and the development of techniques for rapid estimation of derivatives measurement signals. Comparisons with conventional control laws (PID), demonstrate the effectiveness of this type of control in terms of response time and disturbance rejection.