Radiation Noise Separation of Internal Combustion Engine Based on Gammatone-RobustICA Method
Joint Authors
Wang, Shuai
Yao, Jiachi
Xiang, Yang
Qian, Sichong
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-11-26
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
In the internal combustion engine noise source separation process, the combustion noise and the piston slap noise are found to be seriously aliased in time-frequency domain.
It is difficult to accurately separate them.
Therefore, the noise source separation method which is based on Gammatone filter bank and robust independent component analysis (RobustICA) is proposed.
The 6-cylinder internal combustion engine vibration and noise test are carried out in a semianechoic chamber.
The lead covering method is adopted to isolate the interference noise from numbers 1 to 5 cylinder parts, with only the number 6 cylinder parts left bare.
Firstly, many mode components of the measured near-field radiated noise signals are extracted through the designed Gammatone filter bank.
Then, the RobustICA algorithm is utilised to extract the independent components.
Finally, the spectrum analysis, the continuous wavelet time-frequency analysis, the correlation function method, and the drag test are employed to further identify the separation results.
The research results show that the frequency of the combustion noise and the piston slap noise are, respectively, concentrated at 4025 Hz and 1725 Hz.
Compared with the EWT-RobustICA method, the separation results obtained by the Gammatone-RobustICA method have very fewer interference components.
American Psychological Association (APA)
Yao, Jiachi& Xiang, Yang& Qian, Sichong& Wang, Shuai. 2017. Radiation Noise Separation of Internal Combustion Engine Based on Gammatone-RobustICA Method. Shock and Vibration،Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1204982
Modern Language Association (MLA)
Yao, Jiachi…[et al.]. Radiation Noise Separation of Internal Combustion Engine Based on Gammatone-RobustICA Method. Shock and Vibration No. 2017 (2017), pp.1-14.
https://search.emarefa.net/detail/BIM-1204982
American Medical Association (AMA)
Yao, Jiachi& Xiang, Yang& Qian, Sichong& Wang, Shuai. Radiation Noise Separation of Internal Combustion Engine Based on Gammatone-RobustICA Method. Shock and Vibration. 2017. Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1204982
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1204982