Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Active Vibration Control of Smart Hull Structure Using MFC Actuators

MFC 작동기를 이용한 스마트 Hull 구조물의 능동 진동 제어

  • 손정우 (인하대학교 대학원 기계공학과) ;
  • 김흥수 (인하대학교 기계공학부) ;
  • 최승복 (인하대학교 기계공학부)
  • Published : 2005.12.01
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Abstract

Active vibration control of smart hull structure using Macro Fiber Composite (MFC) actuator is performed. Finite element modeling is used to obtain governing equations of motion and boundary effects of end-capped smart hull structure. Equivalent interdigitated electrode model is developed to obtain piezoelectric couplings of MFC actuator. Modal analysis is conducted to investigate the dynamic characteristics of the hull structure, and compared to the results of experimental investigation. MFC actuators are attached where the maximum control performance can be obtained. Active controller based on Linear Quadratic Gaussian (LQG) theory is designed to suppress vibration of smart hull structure. It is observed that closed loop damping can be improved with suitable weighting factors in the developed LQG controller and structural vibration is controlled effectively.

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References

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