System identification and damage detection are one of the major building blocks of structural health monitoring for critical infrastructure. Using measured vibration response of structure, the unknown structural parameters can be extracted by any traditional system identification approach. However when there is a damage, these parameters vary with time which makes the signal nonstationary. In this paper, a simple yet effective method is proposed under the framework of blind source separation (BSS) method to identify the instant and severity of damage. Several time-frequency decompositions including Hilbert transform and time-varying auto-regressive modeling are explored to improve source separation capability of the BSS method.
CITATION STYLE
Musafere, F., Sadhu, A., & Liu, K. (2016). Time-varying system identification using a hybrid blind source separation method. In Conference Proceedings of the Society for Experimental Mechanics Series (Vol. 7, pp. 99–104). Springer New York LLC. https://doi.org/10.1007/978-3-319-29956-3_11
Mendeley helps you to discover research relevant for your work.