Improvement of Damping Performance Amplification Amount by Introducing Displacement Feedback Control to TMD-Booster

Tuned mass dampers (TMD) are widely used as passive countermeasure devices for vibration problems, but that have many limitations. As an example, the ability of a TMD depends on the mass of the weight, but there is a limit to the mass of the weight that can be installed as a damping target structure. Therefore, there are cases where TMD cannot obtain the necessary effect due to the limitations of the target structure. TMD-Booster was proposed as a device to solve the limitation of TMD, and its effect was confirmed by experiments. However, it was not possible to achieve the expected effect due to the effects of friction in the drive unit, when it was operated in an actual environment. In this paper, we implemented displacement feedback control to solve the above problem. As a result, the effect of TMD-Booster was improved.