Title :
Model parameter identification of discharge structure based on HHT
Author :
Huang, Jinlin ; Su, Yawen
Author_Institution :
Sch. of Civil Eng., Tianjin Univ., Tianjin, China
Abstract :
The application of Hilbert-Huang Transform method for modal parameters identification to hydraulic structure is investigated in this paper, according to measurement data of the response time histories under discharge excitation. To avoid mode mixing, the signal is band-pass filter firstly. Then the natural frequencies and modal damping ratios of the arch dam are identified using HHT method in combination with measurement. The results are demonstrated that HHT is effective to extract a more intensive two-order of the arch dam for hydraulic structures.
Keywords :
Hilbert transforms; band-pass filters; damping; dams; hydraulic systems; structural engineering computing; HHT; Hilbert-Huang Transform; arch dam; band-pass filter; discharge structure; flood discharge excitation; hydraulic structure; measurement data; modal damping; model parameter identification; natural frequencies; Civil engineering; Floods; History; Hydroelectric power generation; Parameter estimation; System identification; Transforms; HHT; arch dam; flood discharge excitation; parameter identification;
Conference_Titel :
Multimedia Technology (ICMT), 2011 International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-61284-771-9
DOI :
10.1109/ICMT.2011.6003291
