Noise source identification of diesel engine based on variational mode decomposition and robust independent component analysis
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- 作者：Jiachi Yao ; Yang Xiang ; yxiang@whut.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Sichong Qian ; Shuai Wang ; Shaowei Wu
- 关键词：VMD ; variational mode decomposition ; EMD ; Empirical Mode Decomposition ; EEMD ; Ensemble Empirical Mode Decomposition ; ICA ; independent component analysis ; CWT ; continuous wavelet transform ; FFT ; Fast Fourier Transform ; TDC ; top dead center
- 刊名：Applied Acoustics
- 出版年：2017
- 出版时间：15 January 2017
- 年：2017
- 卷：116
- 期：Complete
- 页码：184-194
- 全文大小：4318 K
文摘
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The lead wrapped method was adopted to isolate the No. 1–5 cylinders, only the No. 6 cylinder part was bared. In order to eliminate the aerodynamic noise, the exhaust main of diesel engine was connected to the outdoor by a long pipe.
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The diesel engine drag test was carried out, so that the piston slap noise can be measured separately. It can be used for comparison with separated results.
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The VMD-RobustICA-CWT method is proposed to separate and identify the noise sources of the 6-cylinder diesel engine. The results show that the VMD-RobustICA-CWT method has better performance than the EEMD-RobustICA-CWT method.