Abstract
This parer considers the robustness against spillover in the reduced-order control system of an active dynamic vibration absorber for high-rise buildings by computational and experimental research. Three methods are investigated: a LQ control using a reduced-order model, a spillover-considered suboptimal control and a spillover-considered suboptimal control using a low-pass filter. In the numerical calculations, it is shown that the control obtained from the displacement criterion possesses the stability limit in the control performance due to the spillover, and the highest performance is achieved by the spillover-considered suboptimal control using a low-pass filter. The optimal threshold frequency of the filter is also discussed. On the other hand, there is little spillover in the suboptimal control from the velocity criterion.
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