In this paper, an enhanced response sensitivity approach is proposed for parameter identification of nonlinear time-delay aeroelastic systems. Two common aeroelastic models are investigated, namely, the aeroelastic system under the unsteady Theodorsen aerodynamic forces and the airfoil-store system under the steady incompressible flow. The work of this paper is mainly threefold. First, the motion equations of two aeroelastic models including time-delay signals are derived, and the response sensitivity analysis with respect to the system parameters is conducted. Then, parameter identification is formulated as a nonlinear least-squares problem, and the enhanced response sensitivity approach is developed to get the solution. Finally, numerical examples are studied to verify the effectiveness of the proposed method. The results reveal that the proposed approach can give accurate, robust, and efficient identification of the parameters for time-delay aeroelastic systems.
Parameter Identification of Nonlinear Aeroelastic System with Time-Delayed Feedback Control
AIAA Journal ; 58 , 1 ; 415-425
2019-09-25
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Nonlinear Time Delayed Feedback Control of Aeroelastic Systems: A Functional Approach
British Library Conference Proceedings | 2003
|Stability of a time-delayed aeroelastic system with a control surface
Online Contents | 2011
|Stability of a time-delayed aeroelastic system with a control surface
Elsevier | 2010
|