Paper Title:
LQG Modal Control on Spatial Structures Using MR Damper
  Abstract

In recent years, the magnetorheological (MR) fluid damper-based semiactive control systems have received considerable attention for protecting structures against natural hazards such as strong earthquakes and high winds. In this paper, an improved modal controller integrated with a Kalman-filter observer is proposed for vibration control of spatial structures. The proposed modal controller can reduce the dimension of the control equation and thus can relieve the calculation burden greatly. In the proposed control system, a Kalman-filter observer, which estimates the full controlled modal states from local accelerometer outputs, is designed for rendering the controller to be more applicable to real spatial structures with a large number of degrees of freedom (DOFs). A numerical example of a lattice roof structure installed with MR dampers is presented. The effectiveness of the controller is evaluated under both Tianjin and El Centro earthquake excitations. The simulation results demonstrate not only its effectiveness of reducing vibration of spatial structure, but also its adaptability for versatile loading conditions.

  Info
Periodical
Advanced Materials Research (Volumes 250-253)
Edited by
Guangfan Li, Yong Huang and Chaohe Chen
Pages
2451-2454
DOI
10.4028/www.scientific.net/AMR.250-253.2451
Citation
W. Lin, S. H. Chen, L. Q. Deng, "LQG Modal Control on Spatial Structures Using MR Damper", Advanced Materials Research, Vols. 250-253, pp. 2451-2454, 2011
Online since
May 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Dong Qiang Gao, Fei Zhang, Zhi Yun Mao, Huan Lin, Jiang Miao Yi
Chapter 7: Mechanics Engineering and Materials
Abstract:DVG850 high-speed machining center worktable is taken as research object, in order to meet the overall performance requirements of the...
985
Authors: Qiong Fen Wang, Ji Yao, Liang Cao, Jian Bin Xie, Chun Li Guo
Chapter 1: The Basic of Mechanics and Research Methods
Abstract:In this paper, asymmetric twin tower high buildings with large bases were studied and the FEM model of asymmetric twin tower high building...
174
Authors: Xin Yuan He, Ye Tian, Hong Wei Zhao, Cheng Li Shi, Pi Xin Liu
Chapter 12: Mechanical Engineering: Research, Development and Solutions
Abstract:Machine working environment was simulated by using ANSYS software for analysis and calculation. Modal analysis results indicated that machine...
1487