Active Vibration Control of Cantilever Beam in fast Maneuvering Flight Environment

Piezoelectric actuator is used to control the elastic vibration of the beam structure in the fast maneuvering flight environment. Based on the multi-body dynamics theory and piezoelectric theory, the mechanical model of the system coupling the 6 degree-of-freedom rigid body motion with the elastic vibration of the beam is established. The analytical expression of inertial load induced by rigid body motion is derived, in which the coupling influence between the rigid motion and elastic vibration is considered. A triaxial centrifuge is employed to provide time-varying inertial loads and the beam is installed in the centrifuge by different ways to simulate different flight conditions. Combined Recurdyn software and Matlab/Simulink module, the vibration of beam excited by inertial load under maneuvering flight environment is depressed effectively by PD and fuzzy PD control algorithm. By the integrated approach developed in this work，the vibration control of the beam under complex time-varying environment is implemented，this provides a reference for active vibration control of complex structures in complex environments.