Abstract-Active and passive mass damper have different performance for vibration structure. Active mass damper has good performance for vibration control systems against winds and small earthquakes. On the contrary, Passive mass damper is efective against big earthquakes. In this paper, we propose some switching vibration control method; switching between passive and active. The vibration control device is pendulum type mass damper with an active mass damper on the end of the pendulum, which works as a passive mass damper without control input and as an active mass damper with control input. Numelical simulations and expelimental resuls show that the proposed switching vibration control has better performance than full time passive and active mass damper.

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