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Structural Engineering and Mechanics
  Volume 36, Number 3, October20 2010, pages 381-399

Fuzzy hybrid control of a wind-excited tall building
Joowon Kang and Hyun-Su Kim

    A fuzzy hybrid control technique using a semi-active tuned mass damper (STMD) has been proposed in this study for mitigation of wind induced motion of a tall building. For numerical simulation, a third generation benchmark is employed for a wind-excited 76-story building. A magnetorheological (MR) damper is used to compose an STMD. The proposed control technique employs a hierarchical structure consisting of two lower-level semi-active controllers (sub-controllers) and a higher-level fuzzy hybrid controller. Skyhook and groundhook control algorithms are used as sub-controllers. When a wind load is applied to the benchmark building, each sub-controller provides different control commands for the STMD. These control commands are appropriately combined by the fuzzy hybrid controller during realtime control. Results from numerical simulations demonstrate that the proposed fuzzy hybrid control technique can effectively reduce the STMD motion as well as building responses compared to the conventional hybrid controller. In addition, it is shown that the control performance of the STMD is superior to that of the sample TMD and comparable to an active TMD, but with a significant reduction in power consumption.
Key Words
    fuzzy logic controller; hybrid control; semi-active tuned mass damper; skyhook; groundhook; wind-excited tall building.
Joowon Kang: School of Architecture, Yeungnam University, Gyeongsan-si, Gyeongbuk 712-749, Korea
Hyun-Su Kim: Division of Architecture, Sunmoon University, Asan-si, Chungnam 336-708, Korea

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