𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Time–energy density analysis based on wavelet transform

✍ Scribed by Cheng Junsheng; Yu Dejie; Yang Yu

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
119 KB
Volume
38
Category
Article
ISSN
0963-8695

No coin nor oath required. For personal study only.

✦ Synopsis

Energy is an important physical variable in signal analysis. The distribution of energy with the change of time and frequency can show the characteristics of a signal. A time-energy density analysis approach based on wavelet transform is proposed in this paper. This method can analyze the energy distribution of signal with the change of time in different frequency bands. Simulation and practical application of the proposed method to roller bearing with faults show that the time-energy density analysis approach can extract the fault characteristics from vibration signal efficiently.

📜 SIMILAR VOLUMES

AN ACOUSTIC DECAY MEASUREMENT BASED ON T
AN ACOUSTIC DECAY MEASUREMENT BASED ON TIME-FREQUENCY ANALYSIS USING WAVELET TRANSFORM
✍ S.-K. LEE 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 467 KB

In acoustic decay measurement using the third-octave band pass "lter, it is known that an inevitable experimental error is produced by &&ringing'' at the tail part of the impulse response of the third-octave band pass "lter. This ringing gives rise to distortion of the decay curve. In order to reduc

GEAR VIBRATION ANALYSIS BY B-SPLINE WAVE
GEAR VIBRATION ANALYSIS BY B-SPLINE WAVELET-BASED LINEAR WAVELET TRANSFORM
✍ S.T. Lin; P.D. McFadden 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 156 KB

The signature of the vibration generated by a fault on a gear is carried by the sidebands around the dominant tooth meshing harmonic. This paper applies the linear wavelet transform based on B-spline wavelets to reveal the spectrogram of the sidebands exactly. The proposed wavelet transform uses 1/a