Abstract
A smart structure is composed of the piezoelectric film sensor and actuator in order to achieve the required vibration control performance. A reduced-order state-space model is obtained by finite element and modal analyses in which the characteristics of the piezoelectric film is taken into account. H_2 controller is designed with the reduced-order model of the smart structure for achieving the vibration suppression. The control force is applied by the piezoelectric film actuator and the feedback signal is detected by the piezoelectric film sensor or the accelerometer in the system. The functions of the piezoelectric film as sensor and actuator are examined by the simulation and experiment. It is verified that the piezoelectric film has the effective function as sensor and actuator, and the enhanced performance for the vibration suppression can be achieved by the vibration control system with the smart structure.
Published Version
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