TY - GEN
T1 - Output-only time-frequency-domain modal identification of time-varying structures using a recursive two-stage least square method
AU - Zhou, S. D.
AU - Heylen, W.
AU - Sas, P.
AU - Liu, L.
PY - 2012
Y1 - 2012
N2 - Real-time acquisition of modal parameters may contribute to the on-line structural dynamic research of time-varying structures, such as the health monitoring, the damage detection, the vibration control, etc. The recursive algorithms of modal parameter estimation supply the fundamental of acquiring modal parameters in real-time. This paper presents a recursive method of modal parameter estimation for time-varying structures, including the recursive estimation of time-dependent power spectra using the recursive least square filter, modal parameter estimation at each time instant using the least square complex frequency-domain method, the modal parameter validation using the recursive fuzzy clustering and the continuous-time estimation of modal parameters using a recursive least square approach. An experimental example validate the proposed method finally.
AB - Real-time acquisition of modal parameters may contribute to the on-line structural dynamic research of time-varying structures, such as the health monitoring, the damage detection, the vibration control, etc. The recursive algorithms of modal parameter estimation supply the fundamental of acquiring modal parameters in real-time. This paper presents a recursive method of modal parameter estimation for time-varying structures, including the recursive estimation of time-dependent power spectra using the recursive least square filter, modal parameter estimation at each time instant using the least square complex frequency-domain method, the modal parameter validation using the recursive fuzzy clustering and the continuous-time estimation of modal parameters using a recursive least square approach. An experimental example validate the proposed method finally.
UR - http://www.scopus.com/inward/record.url?scp=84906333631&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84906333631
SN - 9781622768257
T3 - International Conference on Noise and Vibration Engineering 2012, ISMA 2012, including USD 2012: International Conference on Uncertainty in Structure Dynamics
SP - 2731
EP - 2743
BT - International Conference on Noise and Vibration Engineering 2012, ISMA 2012, including USD 2012
PB - Katholieke Universiteit Leuven
T2 - 25th International Conference on Noise and Vibration engineering, ISMA2012 in conjunction with the 4th International Conference on Uncertainty in Structural Dynamics, USD 2012
Y2 - 17 September 2012 through 19 September 2012
ER -