PhD research
My PhD thesis is about modeling and control of a flexible-fluid coupled system.
At ISAE, an experimental set up is available that consists of an aluminium plate with a (water) tank near the tip. The idea is that this device has some similarity to an airplane wing with a tip tank. The structure and the fluid both moves at similar speeds, and their dynamics are coupled as you can see in the following video:
So my thesis has two main goals: 1) find appropriate mathematical models for this experiment (modeling); 2) find appropriated methods to reduce the vibrations (control). For controlling the system, we are using piezoelectric patches (which consists in a kind of material that deforms when a voltage is applied).
Results of my research were presented in the following papers:
- A port-Hamiltonian model of liquid sloshing in moving containers and application to a fluid-structure system, published at the Journal of Fluids and Structures, Volume 69, February 2017, Pages 402–427 (doi:10.1016/j.jfluidstructs.2016.12.007).
- Modeling of a coupled fluid-structure system excited by piezoelectric actuators: presented at IEEE/ASME AIM 2014 in Lyon, France;
- Control design for a coupled fluid-structure system with piezoelectric actuators, presented at EuroGNC 2015 in Toulouse, France;
- Modeling of a Fluid-structure coupled system using port-Hamiltonian formulation presented at IFAC LHMNC 2015;
- Piezoelectric beam with distributed control ports : a power-preserving discretization using weak formulation presented at IFAC CPDE 2016 in Bertinoro, Italy;
- Modeling by interconnection and control by damping injection of a fluid-structure system with non-collocated actuators and sensors, presented at ISMA 2016, in Leuven, Belgium;
The PhD thesis can be obtained here:
Since 2014, I’ve been working with port-Hamiltonian approach for modeling and control of flexible-fluid structures. A quick introduction about this subject is presented here.