噪声与振动控制Issue(3)：52-56,5.DOI:10.3969/j.issn.1006-1335.2014.03.011
基于希尔伯特变换结构模态参数识别
Modal Parameter Identification of Structures Based on Hilbert Transform
范兴超 1纪国宜1
作者信息
- 1. 南京航空航天大学 机械结构力学及控制国家重点实验室，南京 210016
- 折叠
摘要
Abstract
The HHT method is applied to the modal parameter identification of GARTEUR plane model. The multi-channel filter is applied to process the signal for solving the problem of modal aliasing. Meanwhile, the NExT method is adopted to get more accurate individual-order intrinsic mode functions (IMF) form the EMD decomposition. The mirror continuation method is applied to process extreme value points for suppressing the endpoint effect. Then, the natural frequency of each order and the damping ratio are identified with Hilbert transform and ITD method. The numerical simulation of a cantilever beam is carried out and the simulation results are compared with the theoretical results. Finally, the intrinsic modal parameters of the GARTEUR plane model are recognized with this method.关键词
振动与波/模态参数识别/Hilbert-Huang变换/模态阻尼比/镜像延拓Key words
vibration and wave/modal parameter identification/Hilbert-Huang transformation/modal damping ratio/mirror continuation分类
数理科学引用本文复制引用
范兴超,纪国宜..基于希尔伯特变换结构模态参数识别[J].噪声与振动控制,2014,(3):52-56,5.
