Application of Wavelet Packet De-noising in Time-Frequency Analysis of the Local Wave MethodOA
Application of Wavelet Packet De-noising in Time-Frequency Analysis of the Local Wave Method
The local wave method is a very good time-frequency method for nonstationary vibration signal analysis. But the interfering noise has a big influence on the accuracy of time-frequency analysis. The wavelet packet de-noising m…查看全部>>
The local wave method is a very good time-frequency method for nonstationary vibration signal analysis. But the interfering noise has a big influence on the accuracy of time-frequency analysis. The wavelet packet de-noising method can eliminate the interference of noise and improve the signal-noise-ratio. This paper uses the local wave method to decompose the de-noising signal and perform a time-frequency analysis. We can get better characteristics. Finally,…查看全部>>
LI Hong-kun;MA Xiao-jiang;WANG Zhen;ZHU Hong
Institute of Vibration Engineering, Dalian University of Technology, Dalian 116024, P.R.ChinaInstitute of Vibration Engineering, Dalian University of Technology, Dalian 116024, P.R.ChinaInstitute of Vibration Engineering, Dalian University of Technology, Dalian 116024, P.R.ChinaInstitute of Vibration Engineering, Dalian University of Technology, Dalian 116024, P.R.China
机械制造
local wavetime-frequency analysiswavelet packetDe-noisingsignal-noise-ratio
local wavetime-frequency analysiswavelet packetDe-noisingsignal-noise-ratio
《国际设备工程与管理（英文版）》 2003 (4)
233-238,6
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