Modal parameter identification using wavelet transform method

作者：Liu Ning^*; Wang Tai Yong; Zhao Jian

来源：Journal of Tianjin University, 2006, 39(7): 788-791.

• Damping identification
• Frequency domain modal analysis
• Modal parameter identification
• Responding signal

In order to study the application of continuous wavelet transform in modal analysis and validate it';s feasibility, a new modal parameter identification method was developed based on outstanding numerical character of wavelet transform. This method was used for simulation and the simulation result in accordance with the theoretical value. A cantilever beam was experimentally studied with this method and the result is consistent with theoretical result. This method is especially accurate in damping identification with the relative error less than 1% to theoretic values. The simulation and experiment show that this method has a character of simple calculation. Compared with the normal frequency-domain modal analysis method, it is more exact in parameter identification.

• 出版日期2006
• 单位天津大学