| Title |
Performance Evaluation of Active Mass Damper System using H∞ Control Algorithm |
| Authors |
Lee Heon-Jae ; Shim Hak-Bo ; Jung Hyung-Jo ; Park Soon-Jeon ; Kim Sang-Dae |
| Keywords |
Structural Active Control ; Damping Ratio ; AMD(Active Mass Damper) ; H∞ Control Algorithm |
| Abstract |
This paper presents an application of the active mass damper (AMD) system to the high-rise building structure. The AMD system was installed at the top of the building already in use. The building has five basement floors with SRC structural system and 26 floors with steel structure system, and which makes inherent low damping ratio. The preliminary field measurement was performed and additionally the wind tunnel test was carried out. The H-infinity(H∞) control algorithm has been developed to utilize the maximum capacity of the AMD system. From the results of numerical simulation using the wind load obtained from the wind tunnel tests, it was found that the maximum acceleration responses of the building were reduced significantly. The acceleration responses at the top of the building in the controlled case measured under strong wind loads were compared with those in the uncontrolled case numerically simulated by using the wind load deduced from the measured data and a structural model of the building. It is demonstrated that the H-infinity control algorithm shows good control performance in reducing the building accelerations. This paper mainly focuses on the H-infinity control algorithm performance test of the building already in use under the strong winds due to typhoon NARI in 2007. |