A Frequency Domain Interpolation Method for Damping Ratio Estimation

被引：0
|
作者：
Xue, Jiawei [1 ]
Diao, Ruipeng [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Peoples R China
来源：
2014 IEEE INTERNATIONAL CONFERENCE ON CONTROL SYSTEM COMPUTING AND ENGINEERING | 2014年
关键词：
damping ratio; damping factor; damped exponential signals; frequency domain interpolation; MODAL IDENTIFICATION;
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
Damping ratio is usually needed for structure dynamics analysis. To improve the accuracy of damping ratio estimation and make it benefit for engineering application has been a difficult problem. A new method for the estimation of damping ratio which is necessary for structure dynamics analysis is presented. Under-damped free vibration response and damped exponential signals have the same expression. At first, the frequency spectrum of a damped exponential signal is obtained by Fast Fourier Transformation (FFT); then the damping factor and frequency deviation are calculated by frequency domain interpolation, which employ the ratio of two neighboring spectral samples. The damping ratio is easily determined from the definite relationship between the damping ratio and damping factor. Experiment shows the good accuracy, compared with traditional methods, proving the reliability of the proposed method in engineering application. Thus, this frequency domain interpolation method provides an alternative way for damping ratio estimation.
引用
收藏
页码：251 / 255
页数：5
相关论文
共 50 条
  • [1] Damping estimation by frequency domain decomposition
    Brincker, R
    Ventura, CE
    Andersen, P
    PROCEEDINGS OF IMAC-XIX: A CONFERENCE ON STRUCTURAL DYNAMICS, VOLS 1 AND 2, 2001, 4359 : 698 - 703
  • [2] Damping Ratio Identification Through Orthogonal Separation Frequency Domain Decomposition Method
    Qu C.-X.
    Liu Y.-F.
    Zhou Y.
    Cui C.-Y.
    Yi T.-H.
    Zhongguo Gonglu Xuebao/China Journal of Highway and Transport, 2022, 36 (07): : 80 - 89
  • [3] A damping estimation method based on power ratio
    Wu, Baisheng
    Liu, Weijia
    Wu, Xiaoyang
    ARCHIVE OF APPLIED MECHANICS, 2018, 88 (11) : 1919 - 1927
  • [4] A damping estimation method based on power ratio
    Baisheng Wu
    Weijia Liu
    Xiaoyang Wu
    Archive of Applied Mechanics, 2018, 88 : 1919 - 1927
  • [5] An average inverse power ratio method for the damping estimation from a frequency response function
    Yin, H. P.
    MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 2010, 24 (03) : 617 - 622
  • [6] A frequency domain Distributed Pilot Interpolation based channel estimation method for SOFDM system
    System Department, China Academy of Space Technology, Beijing 100094, China
    Yuhang Xuebao, 2008, 2 (679-682):
  • [7] DETERMINATION OF TRANSDUCER DAMPING RATIO BY FREQUENCY-DOMAIN ANALYSIS
    SIMONEN, P
    OLKKONEN, H
    KORHONEN, T
    REVIEW OF SCIENTIFIC INSTRUMENTS, 1983, 54 (10): : 1392 - 1393
  • [8] Efficient 2-D Frequency and Damping Estimation by Interpolation on Fourier Coefficients
    Ye, Shanglin
    Aboutanios, Elias
    IEEE SIGNAL PROCESSING LETTERS, 2013, 20 (02) : 137 - 140
  • [9] Damping identification in frequency domain using integral method
    Guo, Zhiwei
    Sheng, Meiping
    Ma, Jiangang
    Zhang, Wulin
    JOURNAL OF SOUND AND VIBRATION, 2015, 338 : 237 - 249
  • [10] Frequency estimation for underwater CW pulse by interpolation on fractional Fourier coefficients based on amplitude ratio method
    Lin Li
    JingWei Yin
    Xiao Han
    Wei Ge
    EURASIP Journal on Advances in Signal Processing, 2023
12345