Effective location of active control devices for building vibrations caused by periodic excitation acting on intermediate storey

Abstract

SUMMARYIn order to investigate ways of reducing vibrations of building structures subjected to excitation acting on intermediate storey, active vibration controls are conducted with active control devices installed on di!erent #oors of the structure, and the e!ective location of control devices is also investigated. In this paper, we propose a new &Discrete-Optimizing Control Method' for vibration control. The control forces are determined analytically which makes the &discrete-index function' minimum. Through numerical simulation, the Discrete-Optimizing Control Method is proved to be an e!ective control method. The response reduction e!ects are the best when the control devices are concentrated on the adjacent three #oors of the vibration source.