Title: Instantaneous frequency extraction in harmonic wavelet domain
Abstract:In order to extract the (IF) of feature component from complex multi-components signals,the component IF extracting method in harmonic wavelet domain was proposed,and its realizing process was given i...In order to extract the (IF) of feature component from complex multi-components signals,the component IF extracting method in harmonic wavelet domain was proposed,and its realizing process was given in detail.Based on the analysis of harmonic wavelet transform principle and in light of its excellent properties,the frequency spectrum discontinuity point of harmonic wavelet was smoothed by adding certain windows and the attenuation rate of wavelet in time domain was improved.Aiming at the disadvantages of universal IF estimation,the techniques of linear regression,adaptive filtering,curve smoothing and resampling were applied in the process of deriving instantaneous phase.The simulation results of synthetic and gearbox fault signals were presented to verify the feasibility and validity of the method proposed.Read More
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
Access and Citation
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot