Title :
From local to global stabilizability of aeroelastic oscillations
Author_Institution :
Fac. of Technol., De Montfort Univ., Leicester, UK
Abstract :
An active flutter suppression using linear saturated control is investigated for a 2dof wing section with nonlinear torsional stiffness and limited deflection amplitude of its single actuator. The local suppression of limit cycle oscillations in the nonlinear closed-loop system is achieved through maximization of the stability region of its linearized counterpart and following numerical bifurcation analysis. A globalization scheme is proposed for a locally stabilizing linear saturated controller. Using the scheme, we show global constrained stabilizability of our system.
Keywords :
actuators; aircraft control; bifurcation; closed loop systems; elasticity; linear systems; nonlinear control systems; oscillations; stability; torsion; 2dof wing section; active flutter suppression; actuator; aeroelastic oscillation; aircraft wing; global stabilizability; limit cycle oscillation; limited deflection amplitude; linear saturated control; local stabilizability; local suppression; nonlinear closed-loop system; nonlinear torsional stiffness; numerical bifurcation analysis; Actuators; Automatic control; Bifurcation; Control systems; Delay; Feedback; Limit-cycles; Nonlinear control systems; Stability; System performance;
Conference_Titel :
Control Applications, (CCA) & Intelligent Control, (ISIC), 2009 IEEE
Conference_Location :
Saint Petersburg
Print_ISBN :
978-1-4244-4601-8
Electronic_ISBN :
978-1-4244-4602-5
DOI :
10.1109/CCA.2009.5280946
