Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Multi-Modal Vibration Control of Laminated Composite Plates Using Piezoceramic Sensors/Actuators

압전감지기/작동기를 이용한 복합적층판의 다중모드 진동제어

  • Kim, Mun-Hyeon (LG Industrial Systems Research Center) ;
  • Gang, Yeong-Gyu (Dept. of Mechanical Engineering, Pohang University of Science and Technology) ;
  • Park, Hyeon-Cheol (Dept. of Mechanical Engineering, Pohang University of Science and Technology) ;
  • Hwang, Un-Bong (Dept. of Mechanical Engineering, Pohang University of Science and Technology) ;
  • Han, Gyeong-Seop (Dept. of Mechanical Engineering, Pohang University of Science and Technology)
  • 김문현 (LG산전 빌딩시스템 연구소) ;
  • 강영규 (포항공과대학교 기계공학과) ;
  • 박현철 (포항공과대학교 기계공학과) ;
  • 황운봉 (포항공과대학교 기계공학과) ;
  • 한경섭 (포항공과대학교 기계공학과)
  • Published : 1996.10.01
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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.

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