Vibration Measurement/Control of CFRP Laminated Plates Based on the Optimal Placement of Sensors/Actuators Part I: Numerical Simulation

Abstract

The present paper treats a technique of vibration measurement and control based on the optimal placement of sensors and actuators. In the first report of this paper, we discuss the validity of an optimal design of modal sensor and actuator through numerical simulations. The modal sensor is designed by the optimal placement of accelerometers which are located on the optimal location minimizing an observation spillover. In order to build up a simple and efficient vibration control system using PZT piezoelectric materials as actuators, the modal actuator is constructed by the optimal placement of actuators based on the criterion of minimization of control spillover. To examine the effect of the optimal design of modal sensor and actuator, numerical simulations are presented using CFRP cantilevered plate. We consider the relation between a location of sensors/actuators and the efficiency of modal control. The results of simulation show that the optimal placement of sensors and actuators is indispensable to measure and to control the vibration of plate precisely.