전단형 MR 댐퍼 및 Clipped-optimal 제어알고리즘을 이용한 사장교의 실시간 준능동 진동제어

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허광희;전준용;전승곤
Heo, Gwanghee;Jeon, Joonryong;Jeon, Seunggon

  • 투고 : 2015.11.13
  • 심사 : 2015.12.31
  • 발행 : 2016.03.01

초록

This paper is concerned with an experimental research to control of random vibration caused by external loads specially in cable-stayed bridges which tend to be structurally flexible. For the vibration control, we produced a model structure modelled on Seohae Grand Bridge, and we designed a shear type MR damper. On the center of its middle span, we placed a shear type MR damper which was to control its vibration and also acquire its structural responses such as displacement and acceleration at the same site. The experiments concerning controlling vibration were performed according to a variety of theories including un-control, passive on/off control, and clipped-optimal control. Its control performance was evaluated in terms of the absolute maximum displacements, RMS displacements, the absolute maximum accelerations, RMS accelerations, and the total power required to control the bridge which differ from each different experiment method. Among all the methods applied in this paper, clipped-optimal control method turned out to be the most effective to reduces of displacements, accelerations, and external power. Finally, It is proven that the clipped-optimal control method was effective and useful in the vibration control employing a semi-active devices such MR damper.

키워드

Semi-active Vibration Control;MR Damper;Bingham Model;Clipped-optimal Control Algorithm;Cable-stayed Bridge

참고문헌

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과제정보

연구 과제 주관 기관 : 한국연구재단