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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/36383


    Title: Active Control of Nanjing TV Transmission Tower for Suppressing Wind-Induced Vibration
    Other Titles: 主動控制於南京電視傳訊高塔之抗風減振應用研究
    Authors: Wu, Jong-cheng;吳重成
    Contributors: 淡江大學土木工程學系
    Keywords: active mass driver;linear-quadratic gaussian (LQG) control;coupled lateral-torsional motion
    Date: 2000-08
    Issue Date: 2010-01-11 10:48:14 (UTC+8)
    Publisher: 臺北市:中華民國結構工程學會
    Abstract: 為落實結構主動控制技術於高塔結構的抗風減震應用,中美學者在中國南京之310
    公尺高的電視傳訊高塔上裝設主動質量驅動裝置(Active Mass Driver System) ,做為
    測試與驗證主動控制應用研究之用。本研究依據LQG 控制理論設計控制器,考慮實際
    工程應用之方便性與實用性,控制器只需量測加速度作為迴饋,其中致動器(Actuator)
    的衝程(Stroke) 大小、以及致動器出力大小皆已列入考慮。探討南京塔的受風行為時,
    假設其質量中心、勁度中心及氣動力中心皆不一致,結構反應將包含水平與扭轉向的
    偶合效應。本論文採數值模擬方式探討隨機反應,其結果顯示: (1) LQG 控制之減振
    效果卓越; (2) LQG 控制對風攻角之不確定性其控制強健性。
    This paper presents the Linear Quadratic Gaussian (LQG) control strategy using acceleration
    feedback to reduce the wind-excited responses of the 310m Nanj ing TV transmission tower in China
    under coupled lateral-torsional motion. Emphasis is placed on the practical applications, such as the
    limitations on actuator peak force and stroke, limited number of sensors, etc. The stochastic analysis
    is conducted in the simulation where rms values of response quantities have been computed.
    Comparisons of the responses of the TV tower due to wind loads from different angles of attack have
    been made. Simulation results demonstrate that (i) the performance of the active mass driver using
    the LQG control strategy is remarkable in reducing coupled lateral-torsional motions of the tower, and
    (ii) the LQG strategy is robust with respect to uncertainties in the angle of attack of wind loads.
    Relation: 中華民國第五屆結構工程研討會論文集, pp.47-54
    Appears in Collections:[土木工程學系暨研究所] 會議論文

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