Abstract
The objective of this paper is to present a concept of structural dynamic design considering controllability for smart structures. A smart structure is composed of the piezoelectric film sensor and actuator in order to reduce the structural vibration. H_2 controller is designed with the reduced order model of the smart structure which is obtained by finite element and modal analyses. The control force is applied by the piezoelectric film actuator and the feedback signals are detected by the piezoelectric film sensor and the accelerometer in the system. The structural topology is optimized to achieve an enhanced vibration control performance. The structural optimization problem is defined based on the structural frequency response and the density of each finite element is employed as design variable. It is verified that an enhanced performance on vibration suppression can be achieved by the presented optimal design method.
