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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: Seismic Analysis, Behavior & Design

Vibration tests of cylindrical lattice shell using active vibration control

< Table of Contents for Seismic Analysis, Behavior & Design
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Seismic Analysis, Behavior & Design
  • Pages: 9
  • Title: Vibration tests of cylindrical lattice shell using active vibration control
  • Author(s): Ken'ichi Minowa, Masayuki Hattori, Toshiyuki Ogawa
  • Keywords: cylindrical lattice shell, active vibration control, vibration test, voice coil motor, digital signal processor, acceleration feedback, Kalman filter, optimal control theory, sensor location
Abstract
Active vibration control for shell and spatial structures is studied for the purpose of reducing their seismic responses. For example, in Ref. [6], the active vibration control tests of arch structure with piezoelectric films have been performed. The study shows that the active vibration control can make the reductions in the response displacement and acceleration compatible. However, it is difficult to use the piezoelectric films to existing structures due to their small force. Also, the active vibration control is desired to apply for not only arch structures but also lattice shells. Therefore, this paper deals with the active vibration control for cylindrical lattice shells using voice coil motors, as shown in Fig. 1. To confirm the control effects, vibration tests are performed. Figure 8 shows the distributions of the maximum response acceleration. As a result, the seismic responses are reduced by about 40% without amplifying all the vibration modes.

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