Abstract
Recently, vibration control with tuned mass dampers (TMD) has becoming well known technology, and there are various studies and many practical realizations. For instance, TMDs are effective for vibration problems caused by human walking on long span bridges or office floors, and also building vibration caused by wind. However, sometimes, we can not get sufficient vibration suppression performance by installed TMDs. In such cases, we have to replace the installed TMD for a new large TMD. This process normally requires high cost and long time. In order to avoid this situation, we propose "TMD booster" which can improve vibration suppression performance by just attaching the TMD booster to the existing TMD. Therefore, TMD replacing process is not required. In this paper, first, the concept of the TMD booster is described, then the control method called "Direct Velocity Force Control (DIFC)" is discussed. Finally, effectiveness of the TMD booster is shown in experiments.
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