5652

Автор(ы): 

Автор(ов): 

1

Параметры публикации

Тип публикации: 

Доклад

Название: 

Structural Instability Induced by Actuator Constraints in Controlled Aeroelastic System

Наименование конференции: 

  • 6th EUROMECH Nonlinear Dynamics Conference (ENOC 2008, St. Petersburg)

Наименование источника: 

  • Proceedings of the 6th EUROMECH Nonlinear Dynamics Conference (ENOC 2008, St. Petersburg)

Город: 

  • Saint Petersburg

Издательство: 

  • IPACS Electronic library

Год издания: 

2008

Страницы: 

http://lib.physcon.ru/doc?id=497211102d34
Аннотация
In this paper, an active flutter control scheme is investigated for a 2dof airfoil with nonlinear torsional stiffness. We use a simple graphical method to characterize all possible system equilibria. With the help of this method we study how an active flutter suppression system can lead to ”parasitic” steady states, which are different from the nominal zero-pitch, zero-plunge trim conditions. It appears that these equilibria can be induced by the presence of non-smooth saturation function, which describes amplitude constraints imposed on the system actuators. With control system built using only knowledge of ”nominal” system dynamics, the closed-loop system becomes structurally unstable in the sense that a small change in its parameters or the addition of infinitesimal unmodeled dynamics can lead to the ”parasitic” steady states appearance or disappearance.

Библиографическая ссылка: 

Деменков М.Н. Structural Instability Induced by Actuator Constraints in Controlled Aeroelastic System / Proceedings of the 6th EUROMECH Nonlinear Dynamics Conference (ENOC 2008, St. Petersburg). Saint Petersburg: IPACS Electronic library, 2008. С. http://lib.physcon.ru/doc?id=497211102d34.