Abstract
This paper investigated the performance of a semi-active tuned mass damper (STMD) on a multi-degree of freedom (MDOF) building model. A magnetorheological (MR) damper was used as a control element that provided semi-activity in the STMD. The Hardware in the Loop Simulation (HILS) method was applied to mitigate the difficulty and expense of experimental studies, as well as to obtain more realistic results from numerical simulations. In the implementation of this method for the STMD, the MR damper was set up experimentally, other parts of the system were modeled as computer simulations, and studies were carried out by operating these two parts simultaneously. System performance was investigated by excitation with two different acceleration inputs produced from the natural frequencies of the MDOF building. Additionally, a robust H ∞ controller was designed to determine the voltage transmitted to the MR damper. The results showed that the HILS method could be applied successfully to STMDs used in structural systems, and robust H ∞ controls improve system responses with semi-active control applications. Moreover, the control performance of the MR damper develops with an increase in the mass of the STMD.
Highlights
Given that structures are vulnerable to external factors such as earthquakes and hurricanes, structural vibration control is essential and necessary
The results showed that the Hardware in the Loop Simulation (HILS) method could be applied successfully to semi-active tuned mass damper (STMD) used in structural systems, and robust
In order to obtain the best performance from tuned mass damper (TMD), many active and semi-active control methods have been applied besides optimum design methods
Summary
Given that structures are vulnerable to external factors such as earthquakes and hurricanes, structural vibration control is essential and necessary. In order to obtain the best performance from TMDs, many active and semi-active control methods have been applied besides optimum design methods. In addition to numerical simulation studies, performances of STMDs have been investigated experimentally using different control methods, such as forward feed control [17], groundhook control [18], and LQR control [19]. The performance analysis of STMDs used for structural systems was carried out using the advantages of the HILS method, without the need to establish a purely experimental system. The control element MR damper, which is critical for the system and provides semi-activity of STMD, was set up experimentally, and the other parts of the system were modeled as computer simulations, and the system responses were analyzed by running these two parts simultaneously. The study determined the voltage transmitted to the MR damper, which constitutes the experimental part of the HILS method, with the robust H∞ control method
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