Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Vibration Control of Flexible Structures Using ER Dampers

ER 댐퍼를 이용한 유연구조물의 진동제어

  • 최승복 (인하대학교 공과대학 기계공학과) ;
  • 이재홍 (인하대학교공과대학기계공학과)
  • Published : 1998.04.01
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Abstract

This paper addresses a sliding mode control of vibration in a flexible structure using ER(electro-rheological) dampers. A clamped-clamped flexible structure system supported by two short columns is considered. Three ER dampers to be operated in shear mode are designed on the basis of Bingham model of the arabic gum-based ER fluid, and attached to the flexible beam structure. After deriving the governing equation of motion and associated boundary conditions, a sliding mode controller is formulated to effectively suppress the vibration of the beam structure caused by sinusoidal and random excitations. In the formulation of the controller, parameter variations such as natural frequency deviation are treated to take into account the robustness of control system. The effectiveness of the proposed control system is confirmed by both simulation and experimental results.

본 논문에서는 전기장 강도에 따라 댐핑력 조율이 가능한 ER댐퍼를 이용하여 유연구조물의 진동제어를 수행하였다. 아라빅 검 ER유체를 자체 조성한 후 전단 모드하에서의 빙햄모델을 실험적으로 도출하고, 이를 근거로 알맞은 크기의 ER댐퍼를 설계제작하였다. ER댐퍼를 장착한 양단고정형 유연구조물시스템을 구성하고, 제어기 설계를 위한 운동지배 방정식과 경계조건을 도출하였다. 시스템변수중 실제시스템에서 쉽게 발생할 수 있는 고유진동수와 감쇠비를 불확실 변수로 고려하여 슬라이딩모드 제어기를 설계하였다. 정현파와 랜덤가진에 대한 제안된 제어시스템의 우수한 진동제어 효과를 컴퓨터 시뮬레이션과 실험을 통하여 입증하였다.

Keywords

References

  1. Proceedings of the 2nd International Conference on ER Fluids Applications of Electrorheological Materials in Vibration Control Coulter, J. P.;Duclos, T. G.
  2. Journal of Intelligent Material Systems and Structures v.3 no.1 Response of Electro-Rheological Fluid-Filled Laminate Composites to Forced-Vibration Choi, Y.;Sprecher, A. F.;Conrad, H.
  3. Journal of Intelligent Material Systems and Structures v.7 no.4 Active Vibration Control of Intelligent Composite Laminated Structures Incorporating an Electro-Rheological Fluid Choi, S. B.;Park, Y. K.;Cheong, C. C.
  4. SAE Paper No. 950586 Demonstration of an Automotive Semi-Active Suspension Using Electro-Rheological Fluid Peter, N. K.;Romstadt, D. J.;Lizell, M. B.;Weyenberg, T. R.
  5. ASME J. of Vibration and Acoustics v.115 no.1 The Vibration Damping Effect of an Electrorheological Fluid Austin, S. A.
  6. Journal of Sound and Vibration v.177 no.2 Structural Vibration Control via Electrorheological-Fluid-Based Actuators with Adaptive Viscous and Frictional Damping Wang, K. W.;Kim, Y. S.;Shea, D. B.
  7. Journal of Rheology v.36 no.1 Yield Stresses in Electrorheological Fluids Bonnecaze, R. T.;Brady, J. F.
  8. Journal of Rheology v.39 no.1 The Effect of Electrical Transients on the Shear Stresses in Electrorheological Fluids Ginder, J. M.;Ceccio, S. L.
  9. ASME J. of Dynamic Systems, Measurement, and Control v.19 no.3 Force Tracking Control of a Flexible Gripper Driven by Piezoceramic Actuators Choi, S. B.;Lee, C. H.
  10. Journal of Intelligent Material Systems and Structures v.5 no.5 Semiactive Control for Vibration Attenuation Leitmann, G.