[en] Unstable periodic orbits of nonlinear structures can be stabilized through differential control of the displacement. However, nonlinearities in the system generate non-fundamental harmonics that are fed back into the excitation signal, affecting the structure’s response and making the controller invasive. Adaptive filters are used to perform an online estimation of the Fourier coefficients of the displacement signal in order to cancel the invasiveness. The performance of the method is discussed for simulated experiments possessing smooth and non-smooth nonlinearities.
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
Abeloos, Gaëtan ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Collette, Christophe ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Active aerospace struct. and adv. mecha. systems
Kerschen, Gaëtan ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux
Language :
English
Title :
Non-invasive feedback stabilization of smooth and non-smooth nonlinear systems
Alternative titles :
[en] Stabilisation par retour d'état non-invasif de systèmes lisses et non-lisses
Publication date :
07 September 2020
Number of pages :
10
Event name :
2020 Leuven Conference on Noise and Vibration Engineering
