TY - GEN
T1 - Research on identification of narrow bandwidth
AU - Qiao, Qian
AU - Tang, Wei
AU - Bao, Bin
AU - Cheng, Youxin
PY - 2012
Y1 - 2012
N2 - This paper addresses numerical problem when using poly-reference least square complex frequency-domain identification (p-LSCF) in narrow bandwidth. To solve this problem, a transformation using frequency scaling and shifting is proposed, which enable us to have a well conditioned p-LSCF algorithm. Finally, the cantilever test measurements are used to validate the conclusions of the paper. The results show that the enhanced p-LSCF algorithm with great numerical stability, clearer stabilization diagram and better modal identification.
AB - This paper addresses numerical problem when using poly-reference least square complex frequency-domain identification (p-LSCF) in narrow bandwidth. To solve this problem, a transformation using frequency scaling and shifting is proposed, which enable us to have a well conditioned p-LSCF algorithm. Finally, the cantilever test measurements are used to validate the conclusions of the paper. The results show that the enhanced p-LSCF algorithm with great numerical stability, clearer stabilization diagram and better modal identification.
KW - Modal identification
KW - Narrow bandwidth
KW - Numerical stability
KW - Stabilization diagram
UR - https://www.scopus.com/pages/publications/84868370151
U2 - 10.4028/www.scientific.net/AMR.542-543.1238
DO - 10.4028/www.scientific.net/AMR.542-543.1238
M3 - 会议稿件
AN - SCOPUS:84868370151
SN - 9783037854488
T3 - Advanced Materials Research
SP - 1238
EP - 1241
BT - Automatic Manufacturing Systems II
T2 - 2nd International Conference on Advanced Engineering Materials and Technology, AEMT 2012
Y2 - 6 July 2012 through 8 July 2012
ER -