| Title |
Identification Method for Modal Mass of a Structure Based on H∞ Optimal Model Reduction |
| Authors |
Hwang Jae-Seung ; Lee Sang-Hyun |
| Keywords |
Modal Mass ; System Identification ; Mass Type Control Device ; Observability Matrix ; Controllability Matrix ; H∞ Optimal Model Reduction |
| Abstract |
Modal mass of structure is essential to analyze structural response under disturbance and to design the mass type control devices used to enhance the serviceability of structure. Modal mass of real structure differs from that of analytic mathematical model due to the error induced from analytical assumption and construction. In this study, a identification method is proposed to calculate the modal mass of real structure based on H∞ optimal model reduction. The modal mass is obtained from the relationship between observability, controllability matrix of realized from S.I. and typical 2-degree state space model. The proposed method is verified thorough the three examples. |