Robust Finite-time Control of an Uncertain Aeroelastic System Using Leading-and Trailing-edge Flaps
Document Type
Conference Proceeding
Publication Date
1-1-2017
Publication Title
Advances in Intelligent Systems and Computing
Publisher
Springer Verlag
Volume
539
First page number:
318
Last page number:
328
Abstract
This paper presents a finite-time sliding mode control system for the stabilization of a MIMO nonlinear aeroelastic system using leading-and trailing-edge control surfaces. The selected two-degree-offreedom aeroelastic model includes uncertain parameters and gust loads. This wing model exhibits limit cycle oscillations (LCOs) beyond a critical free-stream velocity. The objective is to design a control law for stabilization of the LCOs. A control law is derived for the trajectory tracking of the plunge displacement and pitch angle trajectories. The control law includes a finite-time stabilizing control signal for the system without uncertainties and a discontinuous control signal to nullify the effect of uncertain functions. In the closed-loop system, finite-time stabilization of the state vector to the origin is achieved. Simulation results show that the controller accomplishes suppression of LCOs, despite uncertainties in the system parameters and gust loads. © Springer International Publishing AG 2017.
Language
english
Repository Citation
Ghorawat, P.,
Lee, K. W.,
Singh, S. N.,
Chmaj, G.
(2017).
Robust Finite-time Control of an Uncertain Aeroelastic System Using Leading-and Trailing-edge Flaps.
Advances in Intelligent Systems and Computing, 539
318-328.
Springer Verlag.
http://dx.doi.org/10.1007/978-3-319-48944-5_29