Semiactive control of stay cable vibration using MR dampers = MR 감쇠기를 이용한 사장 케이블의 반능동 진동제어

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Stay cables, such as are used in cable-stayed bridges, are prone to vibration due to their low inherent damping characteristics. Several methods have been proposed and implemented to mitigate the cable vibration, though each has its limitations. Recently some studies have shown that semiactive dampers can potentially achieve performance levels nearly the same as comparable active devices with few of the detractions. This thesis presents the results of a study to evaluate the performance of semiactive dampers for mitigating the vibration of stay cables in analytical and experimental ways. In analytical study on semiactive cable vibration control, four recently proposed semiactive control algorithms are formulated for use with shear mode MR damper and the performances of each semiactive damping systems are compared with passive control systems and the other semiactive control systems. In experimental study on semiactive cable vibration control, the full-scale stay cable, which is the same as used for the in-service cable-stayed bridge in Korea, is considered. Semiactive control system which consists of digital controller, experimental sensors, and MR dampers is established. The performances of the several control strategies for the semiactive control system have been compared with those of the passive-type control systems employing MR dampers.
Advisors
Lee, In-Won이인원
Description
한국과학기술원 : 건설및환경공학과,
Publisher
한국과학기술원
Issue Date
2005
Identifier
243767/325007  / 020033561
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 건설및환경공학과, 2005.2, [ v, 43 p. ]

Keywords

Stay Cable; Semiactive Control; MR Damper; Control Algorithm; 제어 알고리즘; 사장 케이블; 반능동 제어; 자기 유변 유체 감쇠기

URI
http://hdl.handle.net/10203/31119
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=243767&flag=dissertation
Appears in Collection
CE-Theses_Master(석사논문)
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