Structural system identification by utilizing transmissibility coherence from limited measured data

Yun-Lai Zhou, Cao Hongyou, Ni Zhen, Li Zhang, Magd Abdel Wahab
2017 Journal of Physics, Conference Series  
A state space modeling and control method for multivariable smart structural systems Robert Butler and Vittal Rao Decentralized modal identification using sparse blind source separation A Sadhu, B Hazra, S Narasimhan et al. Holographic measurement of coherence I N Ross Structure-unknown non-linear dynamic systems: identification through neural networks S F Masri, A G Chassiakos and T K Caughey Separability of temporal coherence and spatial coherence in interferometric experiments A Marechal and
more » ... ents A Marechal and P Chavel Abstract. System identification performs as a core issue in structural dynamic analysis. In this study, transmissibility coherence is introduced for system identification with recalling the existing techniques based on transmissibility. Unlike previous approaches that require four-point measurement, the proposed methodology in this study only requires two-point measurement. The merit behind this approach is that the transmissibility coherence can be employed to estimate the subtraction of transmissibility between two reference points, by using auto-and crossspectrum analysis. Verification using experimental data proves the feasibility of the proposed technique.
doi:10.1088/1742-6596/842/1/012020 fatcat:z2toslhowvcmnmakagh4rj4kjy