Abstract
Active Mass damper （AMD） has been used to improve habitability of High-rise buildings by controlling building vibration. High-rise buildings with large aspect ratio of the cross section viewed from above is increasing because of the constraints of the construction site and design of buildings in recent years. In such buildings, not only translational but also torsional vibration are easily excited by wind. Torsional vibration worsen habitability near the ends of the building so it is difficult for AMD considering only translational vibration to improve habitability of the whole building. Therefore a method to control both translational and torsional vibrations is required. In this study, we propose modal control for AMD considering both translational and torsional vibrations of a building. It is multi-input multi-output control system and utilizes the characteristic that motion equations of a controlled object is able to be divided into each vibration mode by modal analysis. In addition, it is effective in the vibration coupled with translation and torsion because each modal control input doesn’t interfere with each other. In this paper, a building which will be constructed is dealt with controlled object and effectiveness of the modal control is verified through numerical simulation by comparing distributed control which control the vibration of AMDs installation positions individually.
