Abstract
In this study, we proposed a new method to calculate the fractal dimension by using a wavelet transform which is a time-frequency analysis method and try to evaluate the change of the similar structure in an unsteady signal. The procedure of our method is: 1) carrying out wavelet transform of the unsteady signal and obtaining the information about both time and frequency. 2) calculating the fractal dimension at each time from the wavelet transform of the unsteady signal. 3) evaluating change of the similar structure in the unsteady signal by using the fractal dimension obtained. Then the unsteady turbulence, such as jet flow and tumble flow in an engine were analyzed by using our approach. As a result, the change of the eddy structure can be shown very well.
| Original language | English |
|---|---|
| Pages (from-to) | 204-211 |
| Number of pages | 8 |
| Journal | Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C |
| Volume | 68 |
| Issue number | 1 |
| Publication status | Published - Jan 2002 |
Fingerprint
Keywords
- Fractal Analysis
- Signal Analysis
- Similar Structure
- Unsteady Turbulence
- Wavelet Transform
ASJC Scopus subject areas
- Mechanical Engineering
Cite this
A study of fractal analysis of the unsteady signal using wavelet transform. / Zhang, Zhong; Ishibashi, Kengo; Kawabata, Hiroaki; Tomita, Eiji.
In: Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, Vol. 68, No. 1, 01.2002, p. 204-211.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A study of fractal analysis of the unsteady signal using wavelet transform
AU - Zhang, Zhong
AU - Ishibashi, Kengo
AU - Kawabata, Hiroaki
AU - Tomita, Eiji
PY - 2002/1
Y1 - 2002/1
N2 - In this study, we proposed a new method to calculate the fractal dimension by using a wavelet transform which is a time-frequency analysis method and try to evaluate the change of the similar structure in an unsteady signal. The procedure of our method is: 1) carrying out wavelet transform of the unsteady signal and obtaining the information about both time and frequency. 2) calculating the fractal dimension at each time from the wavelet transform of the unsteady signal. 3) evaluating change of the similar structure in the unsteady signal by using the fractal dimension obtained. Then the unsteady turbulence, such as jet flow and tumble flow in an engine were analyzed by using our approach. As a result, the change of the eddy structure can be shown very well.
AB - In this study, we proposed a new method to calculate the fractal dimension by using a wavelet transform which is a time-frequency analysis method and try to evaluate the change of the similar structure in an unsteady signal. The procedure of our method is: 1) carrying out wavelet transform of the unsteady signal and obtaining the information about both time and frequency. 2) calculating the fractal dimension at each time from the wavelet transform of the unsteady signal. 3) evaluating change of the similar structure in the unsteady signal by using the fractal dimension obtained. Then the unsteady turbulence, such as jet flow and tumble flow in an engine were analyzed by using our approach. As a result, the change of the eddy structure can be shown very well.
KW - Fractal Analysis
KW - Signal Analysis
KW - Similar Structure
KW - Unsteady Turbulence
KW - Wavelet Transform
UR - http://www.scopus.com/inward/record.url?scp=0036410323&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036410323&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0036410323
VL - 68
SP - 204
EP - 211
JO - Nippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
JF - Nippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
SN - 0387-5024
IS - 1
ER -