Open AccessOn-Demand Aerodynamics in Integrally Actuated Membranes with Feedback Control
Author(s) -
Stefano Buoso,
Rafael Palacios
Publication year - 2017
Publication title -
aiaa journal/aiaa journal on disc
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.828
H-Index - 158
eISSN - 1081-0102
pISSN - 0001-1452
DOI - 10.2514/1.j054888
Subject(s) - integrally closed , aerodynamics , aerospace engineering , feedback control , control theory (sociology) , membrane , aeroelasticity , mechanics , engineering , materials science , aeronautics , computer science , physics , control (management) , mechanical engineering , control engineering , chemistry , artificial intelligence , biochemistry
This paper is a numerical investigation on model reduction and control system design of integrally actuated membrane wings. A high-fidelity electro-aeromechanical model is used for the simulation of the dynamic fluid-structure interaction between a low-Reynolds-number flow and a dielectric elastomeric wing. Two reduced-order models with different levels of complexity are then derived. They are based on the projection of the fullorder discretisation of fluid and structure on modal shapes obtained from eigenvalue analysis and Proper Orthogonal Decomposition. The low-order systems are then used for the design of Proportional-Integral-Derivative and Linear Quadratic Gaussian feedback schemes to control wing lift. When implemented in the full-order model, closed-loop dynamics are in very good agreement with the reduced-order model for both tracking and gust rejection, demonstrating the suitability of the approach. The control laws selected in this work were found to be effective only for low-frequency disturbances due to the large phase delay introduced by the fluid convective time-scales, but results demonstrate the potential for the aerodynamic control of membrane wings in outdoor flight using dielectric elastomers