Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
Modeling and Energy-Based Control of a Flexible Wing with Piezoelectric Actuators
Submission Author:
Thais Cardoso Franco , SP
Co-Authors:
Thais Cardoso Franco, Flavio Luiz Cardoso-Ribeiro
Presenter: Thais Cardoso Franco
doi://10.26678/ABCM.COBEM2019.COB2019-0609
Abstract
Flutter is an instability that involves two or more vibration modes of flexible structures and results from an unfavorable coupling of aerodynamic, inertial and elastic forces, in such a way that the structure extracts energy from the airflow. In this research, we aim to describe an aeroelastic model with an energy-based control law using port-Hamiltonian method, investigating this type of approach for flutter-suppression. The model of wing to be studied is a beam of variable cross section using the discretization of the Euler-Bernoulli in which the bending and torsion motions is considered. The contribution of the piezoelectric material in the dynamics of the structure is included and the aerodynamics is taken into account by using the unsteady theory by p-k method. For the development of the simulation of the model and its control laws two approximate methods are used from routines created in the MATLAB environment: Finite Element Method and Rayleigh-Ritz with hierarchical standard and Bardell polynomials. In order to control using damping inject method and LQR, we investigate the use of piezoelectric material which, mainly due to their crystalline structures, give them the capacity to transform energy of mechanical tension in electric charge.
Keywords
Flutter, piezoelectric material, Unsteady Aerodynamics
