DocumentCode :
535079
Title :
A signal analysis method based on reassigned scalogram
Author :
Jun-an Liu ; Kexiang Wei ; Jiqiu Tan ; Jusheng Huang ; Xin Wu
Author_Institution :
Dept. of Mech. Eng., Hunan Inst. of Eng., Xiangtan, China
Volume :
6
fYear :
2010
fDate :
16-18 Oct. 2010
Firstpage :
2901
Lastpage :
2904
Abstract :
The acoustic signal of a mechanical watch movement consists of many modal frequencies of its escapement. However, the traditional methods neglected such valuable information which is in frequency domain. This paper presents a method for the signature analysis of mechanical watch movements by combining reassigned scalogram with finite element analysis (FEA). First, reassigned scalogram is applied to reveal the frequency components in different shocks by mapping the signal into a 2D domain of time and frequency. Then, FEA is introduced to find the modal frequencies of the mechanical watch movements. By comparing the frequencies obtained by two ways, the mechanical watch movement is easier to analyze and therefore to diagnose possible malfunctions robustly.
Keywords :
acoustic signal processing; fault diagnosis; finite element analysis; mechanical engineering computing; time-domain analysis; watches; 2D domain; FEA; acoustic signal; finite element analysis; frequency domain; mechanical watch movement; modal frequency; reassigned scalogram; signal analysis method; signature analysis; Continuous wavelet transforms; Electric shock; Time frequency analysis; Vibrations; Watches; Wheels; acoustic signal; fault diagnosis; finite element analysis; mechanical watch movement; reassigned scalogram;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Image and Signal Processing (CISP), 2010 3rd International Congress on
Conference_Location :
Yantai
Print_ISBN :
978-1-4244-6513-2
Type :
conf
DOI :
10.1109/CISP.2010.5646830
Filename :
5646830
Link To Document :
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