사장 케이블 제진용 스마트 감쇠 시스템에 대한 수치적 연구
An Numerical Study on Smart Damping System for Suppressing of Stay Cable
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초록
본 연구에서는 사장 케이블의 진동을 저감시키기 위한 자기유변유체 (MR) 감쇠기-기반 스마트 감쇠 시스템의 성능을 수치적으로 검증하였다. 스마트 감쇠 시스템을 위한 다양한 제어 알고리즘, 즉 Lyapunov stability-based control, maximum energy dissipation, clipped-optimal control, homogeneous friction 알고리즘의 제어 성능을 MR 감쇠기를 수동 형태로 활용한 제어 시스템 (즉, passive-off 및 passive-on 형태)의 성능과 비교하였다. 수치모의실험 결과를 통해 제안된 스마트 감쇠 시스템이 풍하중을 받는 사장 케이블의 응답을 현저하게 저감시키는 것을 확인하였다.
Abstract
In this paper, the efficacy of the magnetorheological (MR) damper-based smart damping system for suppressing vibration of stay cables has been numerically verified. The performances of the several control algorithms for the smart damping system, such as the Lyapunov stability theory-based control algorithm, the maximum energy dissipation algorithm, the clipped-optimal control algorithms and the modulated homogeneous friction algorithm, have been compared with those of the passive-type control systems employing MR dampers (i.e., the passive-off and the passive-on types). The numerical simulation results demonstrate that the smart damping systems can significantly reduce the responses of stay cables under wind load.
참고문헌 (11)
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