Abstract
In the case of cable suspended structures, the natural frequencies are distributed densely from the lower frequency. Therefore, some vibration modes within a certain frequency range are excited by the external forces. Applying the optimal regulator theory for the active vibration control of the structures using a reduced order model, the control system becomes unstable due to the spillover. In this paper presents the design method of the controller by the H∞ control theory which controles the vibration modes with particular frequency range. The vibration control performance of the stress ribbon bridge excited by the pedestrians is clarified by carrying out by the numerical simulations. It is shown that effectively and stable vibration control is realized by the H∞ output feedback controller.
