One of the aerodynamic phenomena associated with high performance aircraft is the high frequency vortex induced buffeting. The buffeting load can lead to high cyclic strain and stress,dramatically reduce the fatigue ...One of the aerodynamic phenomena associated with high performance aircraft is the high frequency vortex induced buffeting. The buffeting load can lead to high cyclic strain and stress,dramatically reduce the fatigue life of composite structures. In this paper, piezoelectric patches are bonded on the surface of composite panel. The dynamic response of the structure is measured by using bonded piezoelectric sensors. Filtered adaptive control algorithm is used to control the strain of piezoelectric actuators actively, so as to increase the modal damping coefficient of the composite panel, suppress the dynamic response and improve the fatigue performance of the structure. The feasibility of this method is verified in model experiments.展开更多
文摘One of the aerodynamic phenomena associated with high performance aircraft is the high frequency vortex induced buffeting. The buffeting load can lead to high cyclic strain and stress,dramatically reduce the fatigue life of composite structures. In this paper, piezoelectric patches are bonded on the surface of composite panel. The dynamic response of the structure is measured by using bonded piezoelectric sensors. Filtered adaptive control algorithm is used to control the strain of piezoelectric actuators actively, so as to increase the modal damping coefficient of the composite panel, suppress the dynamic response and improve the fatigue performance of the structure. The feasibility of this method is verified in model experiments.
