| Title |
Designing a Smart Damping System to Mitigate Structure Vibration and its Numerical Verification |
| Authors |
Heo Gwang-Hee ; Lee Giu ; Yun Hyun-Do |
| Keywords |
MR damper ; Smart damping system ; Model updating ; Unified control system ; Vibration mitigation ; Lyapunov algorithms |
| Abstract |
This paper presents a new algorithm which is applicable in designing a smart damping system for vibration mitigation. The algorithm, which is extended into a unified system from Lyapunov stability theory, enables us to improve the errors in quantization by its increased stability. The validity of this design method was proved in the experiment on a control model of three-storied building structure. Smart damper was used for MR(magnetorheological fluid) damper in the experiment, and its control effectiveness was evaluated. In order to make a more accurate control model mathematically, we updated the model on the basis of the analysis of dynamic characteristics of structure and of the mathematical analysis of a lumped mass model, and then employed a state space model redefined by structural property matrix. Using this improved control model, control effect on structures which were under the influence of each different earthquake magnitude was analyzed with various performance index, and thus the algorithm presented here is proved to be valid. |