Abstract
The traditional TMD and AMD are ineffective for the swing vibration control of suspended structures. Although the recently proposed tuned rotary inertia damper (TRID) is effective for swing vibration control, it has the limitations of low robustness and limited application range. The Active Rotary Inertia Driver (ARID) is proposed in this paper. Firstly, the simplified analytical model of the suspended structure subjected to point source excitations with ARID is established based on Lagrangian principles. The control algorithm is developed based on the LQR (linear quadratic regulator) algorithm. Then the numerical analysis of the small-scale model with five kinds of multi-hazards excitations (free vibration, forced vibration, sweep vibration, earthquake vibration and sea wave vibration) were carried out using Simulink. Lastly, a series of shaking-table experiments were carried out to verify the numerical analysis results. The effectiveness of the ARID system for swing vibration control of the suspended structure is validated. Furthermore, the better robustness and wide application range of the ARID system is also verified by the numerical analyses and experiments of the small-scale model with multi-type excitations.KeywordsStructural vibration controlActive controlMotion controlSwing vibrationActive rotary inertia driver
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