퍼지관리제어기법을 이용한 사장교의 지진응답제어
Seismic Response Control of Cable-Stayed Bridge Using Fuzzy Supervisory Control Technique
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
사장교의 지진응답 제어를 위한 퍼지관리제어기법에 대하여 연구하였다. 제시하는 방법은 복합제어방법의 하나로서, 여러 개의 최적제어기로 이루어진 하부제어기와 퍼지관리자로 구성되는 계층적인 구조를 가진다. 하위제어기들은 사장교의 주요 지진응답들을 저감시키도록 각각 독립적으로 설계되며, 퍼지관리자는 설계된 하위제어기들의 참여율을 조절함으로써 향상된 제진성능을 확보한다. 이는 하위제어기의 정적 제어이득을 퍼지추론과정에 기반하여 실시간으로 변화하는 동적 제어이득으로 변환함으로써 이루어진다. 제안하는 방법의 적용성을 평가하기 위하여 Dyke 등이 제안한 사장교의 벤치마크 제어문제를 설계 예로 고려하였으며, 사장교 지진응답제어를 위한 제어변수로는 주탑하부의 전단력과 휨모멘트, 주탑상부의 수평변위 및 데크주탑간 상대변위, 그리고 케이블의 장력을 선정하였다. 벤치마크 사장교에 대하여 제안한 퍼지관리제어기 및 최적제어이론에 기반한 LQG 제어기의 제어성능 비교로부터 제시하는 기법의 효율성을 검증하였다.
Abstract
Fuzzy supervisory control technique for the seismic response control of cable-stayed bridges subject to earthquakes is studied. The proposed technique is a hybrid control method, which adopts a hierarchical structure consisting of several sub-controllers and a fuzzy supervisor. Sub-controllers are independently designed to reduce the responses to be controlled of a cable-stayed bridge, and a fuzzy supervisor achieves improved seismic control performance by tuning the pre-designed sub-controllers. It is realized by converting static gains of the sub-controllers into time-varying dynamic gains through the fuzzy inference mechanism. To evaluate the feasibility of the proposed technique, the benchmark control problem of cable-stayed bridge proposed by Dyke et al. is adopted. The control variables for the seismic response control of the cable-stayed bridge are determined to be the shear forces and bending moments at the base of the towers, the longitudinal displacements at the top of the towers, the relative displacements between the deck and the tower, and the tensions in the stay cables. Comparative results between the fuzzy supervisory controller and LQG controller demonstrate the effectiveness of the proposed control technique.
참고문헌 (19)
- "CableStayed BridgesPast, Present, and Future" (1999), IABSE Conference
- "CableSupported Bridges Challenging Technical Limits" (2001), IABSE Conference
- "Fullscale Measurements and Structural Damping of CableSupported Bridges", pp.557~564 (1995)
- "Structural Control", pp.1277~1287 (1996)
- "Vibration, Control and Monitoring of LongSpan BridgesRecent Research, Developments and Practice in Japan", 58, pp.71~97 (2002)
- "State of the Art of Structural Control", 129(7), pp.845~856 (2003)
- "Structural Control", 123(9), pp.897~971 (1997)
- "Active Control of Bridge Towers During Erection", pp.173~184 (1995)
- "Vibration Control of the Main Towers of the Akashi Kaikyo Bridge", 79, pp.57~62 (1998)
- "Mitigation of Motions of Tall Buildings with Specific Examples of Recent Applications", 2(3) (1999)
- "Phase I Benchmark Control Problem for Seismic Response of CableStayed Bridges", 129(7), pp.857~872 (2003)
- "Control of Seismically Excited CableStayed Bridge Employing Magnetorheological Fluid Dampers", 129(7), pp.873~883 (2003)
- "Applications of Some Semiactive Control Systems to Benchmark CableStayed Bridge", 129(7), pp.884~894 (2003)
- "Active control of earthquake excited structures using fuzzy supervisory technique", 33(11), pp.761~768 (2002)
- "Independent modal space fuzzy control of earthquakeexcited structures", 26(2), pp.279~289 (2004)
- "“Principal Component Analysis in Linear Systems ” IEEE Transactions on Automatic Control" (1981)
- "MR Damper가 장착된 교량구조물의 준능동 퍼지제어", 22(4‐A), pp.847~857 (2002)
- "Active Control of Earthquake Excited Structures using Fuzzy Supervisory Technique", 33(11-12), pp.761~768 (2002)
- "Independent Modal Space Fuzzy Control of EarthquakeExcited Structures", 26, pp.279~289 (2004)