Vibration and Aeroelastic Control of Composite Structures Using PZT Actuators

摘要

The present paper treats the optimal placement method of lead zirconate titanate(PZT)actuators for vibration and aeroelastic control.A vibration control technique based on the state feedback control for each mode using the modal displacement and modal velocity has been proposed.For effective suppression of vibration of composite structures,a modal actuator is constructed by the optimal placement of a limited number of segmented piezoelectric actuators based on the minimization criterion of control spillover.In this research,PZT patches are used as actuators,and a modal actuator is used for vibration control based on the linear quadratic regulator(LQR)control theory.The experimental verification of vibration control of cantilevered laminated plates is carried out.Moreover,the present method is applied to aeroelastic control of composite wing structures.The validity of the present method for aeroelastic control of cantilevered laminated plates is also examined through the numerical examples.