Abstract
Various semi-active control methods have been proposed for vibration control of civil structures. In contrast to active vibration control systems, all semi-active control systems are essentially asymptotically stable because of the stability of the structural systems (with structural damping) themselves and the energy dissipating nature of the semi-active control law. In this study, by utilizing the above property on the stability of semi-active control systems, a reduced-order structural model and a semi-active control law are simultaneously obtained so that the performance of the resulting semi-active control system becomes good. A two degree of freedom active control law is adopted as the targeted semi-active control in the present study. Optimal design parameters are obtained with Genetic Algorithm (GA). Simulation results show the effectiveness of the proposed approach.
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