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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/44876


    Title: Active Control of Transmission Tower Under Stochastic Wind
    Authors: 吳重成;Wu, Jong-cheng;Yang, J. N.
    Contributors: 淡江大學土木工程學系
    Date: 1998-11-01
    Issue Date: 2010-03-26 17:35:12 (UTC+8)
    Publisher: American Society of Civil Engineers (ASCE)
    Abstract: An active mass driver has been designed for installation on the upper observation deck of the 310 m Nanjing TV transmission tower in China in order to reduce the acceleration response under strong wind gusts. In this paper, the linear quadratic Gaussian (LQG), H∞, and continuous sliding mode control (CSMC) strategies have been applied to the active mass driver system based on the acceleration feedbacks. Emphasis is placed on the practical applications of LQG, H∞, and CSMC controllers, including limitations on the actuator peak force and stroke, the limited number of sensors, and noise pollution. Further, a method for modulating the control effort for the CSMC controller is proposed in this paper to satisfy the practical constraints on the actuator. A state reduced-order system has been established to design the dynamic output feedback controllers. The wind loads acting on the tower are defined by the Davenport cross-power spectral density matrix. Simulation results demonstrate that, when designed appropriately, the LQG, H∞, and CSMC control strategies are suitable for full-scale implementations of the active mass driver, and their control performances are quite remarkable.
    Relation: Journal of structural engineering 124(11), pp.1302-1312
    DOI: 10.1061/(ASCE)0733-9445(1998)124:11(1302)#sthash.KnVB1c99.dpuf
    Appears in Collections:[Graduate Institute & Department of Civil Engineering] Journal Article

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