425 圧電フィルムセンサ/アクチュエータによる片持ばりの準波動吸収制御(圧電素子・フィルム)

概要

論文の詳細を見る
A wave absorbing control method, namely quasi-wave-absorbing control, of a harmonically excited cantilever beam using piezoelectric film sensor/actuator is investigated. At first, based on the relative coordinate system, fundamental equations are formulated using wave propagation characteristics of the beam. And then, five control laws so as not to generate the reflected waves at the tip of the beam are derived with the shapes of both piezoelectric sensor and actuator taken into consideration. Theoretical analyses of steady state responses show that based on the proposed method, almost equivalent vibration control effects can be obtained in comparison with those obtained by the conventional wave absorbing control method based on the absolute coordinate. Finally, vibration control experiment is performed with the triangular shaped sensor and the rectangular shaped actuator bonded on both surfaces of the beam, and velocity feedback control law which is expected to be most effective in the theoretical analysis is applied and it is verified that good vibration control effects are obtained for three lowest vibration modes.
一般社団法人日本機械学会の論文
2001-08-03