Abstract
Vibration control of a flexible beam using piezoelectric film sensors and multilayered actuators is investigated. At first, the method of multilayered piezoelectric actuator is proposed for the purpose of improvement in vibration control effect against relatively thick structure. In the proposed technique, multilayered piezoelectric films are connected in parallel electrically and are driven simultaneously by the control voltage. Then, multilayered actuator is actually applied to a cantilever beam and by measuring the amplitude of semi-static displacement at the tip of the beam, it is shown that the actuator force generated by the proposed miltilayered actuator improves for the same magnification as the number of films. Finally, proposed method is applied with the piezlelectric film sensor to the transient vibration control of the cantilever beam and it is verified that the vibration control effect actually improves and the theory agrees well with the experiment.
