Structural Vibration Control Using Semiactive Tuned Mass Damper

Abstract

The main purpose of this study is to show the sufficient control performance of semiactive tuned mass damper and to identify a suitable control method for semiactive tuned mass damper in structural vibration control. In this study, four control algorithms are considered: displacement based groundhook (DBG), velocity based groundhook (VBG), clipped optimal, maximum energy dissipation (MEDA). For semiactive tuned mass damper, MR damper is considered as a controllable damping device, and the command voltage is calculated by the control algorithms. Each of the control theory is applied to the three story shear building excited by earthquake load. The performance of each algorithm is compared with the conventional tuned mass damper model using evaluation criteria. Also, to check the robustness of the semiactive tuned mass damper, stiffness uncertainties are applied to the system. The result indicates that semiactive tuned mass damper shows control efficiency, especially with uncertainty. And DBG and clipped optimal algorithm perform the best among the considered control policies.