Realization of Wave Control for Uniformly Varying Damped Mass-Spring Systems by Active Mass Dampers

摘要

This study considers realization of the wave control for the uniformly varying damped mass-spring systems controlled by the active mass dampers (AMD). We first derive a necessary and sufficient condition for the exact impedance matching to ensure the internal stability. Since the condition is very restrictive and we also need to prevent the drift of the AMD in practice, we next consider the relaxed impedance matching condition and propose a control design method to realize the relaxed impedance matching and to prevent the drift of the AMD. As a design example of the proposed method, the wave control for the multi-story structure is also presented. Efficiency of the controller is examined numerically and experimentally.