Vibration Control of Bridge Towers Using a Lumped Modeling Approach

[+] Author and Article Information
K. Seto

Department of Mechanical Engineering, Nihon University, 1-8 Kanda Surugadai, Chiyodo-ku, Tokyo 101, Japan

F. Doi

Vibration Control Laboratory, Kyowa Metal Works Co., Ltd., Fukuura 1-1-1, Kanazawa-ku, Yokohama 236, Japan

M. Ren

J. Vib. Acoust 121(1), 95-100 (Jan 01, 1999) (6 pages) doi:10.1115/1.2893955 History: Received November 01, 1997; Revised April 01, 1998; Online February 26, 2008


A lumped modeling method and a simple robust control design based on this method are proposed in this paper for controlling the multiple vibration modes of a bridge tower structure under construction. The method is specified by a physical state-space suboptimal controller, designed upon a lumped model, combined with the so-called “structure filters” and the software filters for preventing spillover of neglected high modes. Effectiveness of the method is experimentally demonstrated by showing that the first five vibration modes of a model structure of a flexible bridge tower are well controlled without spillover of neglected higher modes.

Copyright © 1999 by The American Society of Mechanical Engineers
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