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Multi-Modal Vibration Control of Laminated Composite Plates Using Piezoceramic Sensors/Actuators
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 Title & Authors
Multi-Modal Vibration Control of Laminated Composite Plates Using Piezoceramic Sensors/Actuators
Kim, Mun-Hyeon; Gang, Yeong-Gyu; Park, Hyeon-Cheol; Hwang, Un-Bong; Han, Gyeong-Seop;
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 Abstract
Multi-model vibration control of laminated composites plates for various fiver orientations has been carried out by making use of piezolectric materials(PZT) as sensors and actuators. Cantilever plate is used as a specimen to test multi-modal vibration supression under random exitation. Impulse technique is applied to determine the natural frequency, the damping ratio(.zeta.) and the modal damping(2.zeta..omega.) of the first bending and the trosion modes. Two independent controllers are implemented to control the two modes simultaneously and established digitally on the basis of the direct negative velocity feedback control with collocated sensor/actuator. Experimental results for various fiber orientations and feedback gains are compared with finite element analysis considering stiffnesses and dampings of piezoeletiric sensors, actuators and bonding layer.
 Keywords
Multi-Modal Vibration Control;Laminated Composite Plate;Direct Nagative Velocity Feedback Control;Active Control;Passive Control;
 Language
Korean
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