WAVE CONTROL OF MULTI-STORY STRUCTURES BY ACTIVE MASS DAMPERS

Abstract

This study considers the wave control of multi-story structures with the active mass dampers (AMD). A control design method for realizing the impedance matching controller by using the AMD is proposed. A controller is designed so that the controlled AMD has the property of the impedance matching controller at the higher frequency region including the resonant frequencies of the structure while preventing the drift of the mass at the lower frequency. Physical parameters directly used for designing the controller are only the actuator dynamics, therefore, the proposed method can be applicable for highly flexible structures. For the closed loop stability of the whole system including the structure, the notion of the Nyquist criterion is introduced. Experimental results are shown to prove efficiency