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Blind Source Separation of Internal Combustion Engine Vibration Signals

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Authors
Liu, Xianhua
Randall, R.
Antoni, J.
Date
2005
Type
Conference Paper

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Liu, X. and Randall, R.B. and Antoni, J. 2005. Blind Source Separation of Internal Combustion Engine Vibration Signals, in Xie, M. et al. (ed), Advances in Applied Mechanics: Proceedings of the 4th Australasian Congress on Applied Mechanics, Feb 16-18 2005, pp. 257-262. Melbourne, Australia: The Institute of Materials Engineering, Australasia Ltd.
Source Title
Proceedings of the 4th Australasian Congress on Applied Mechanics: Advances in Applied Mechanics
Source Conference
The 4th Australasian Congress on Applied Mechanics
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Abstract

Internal combustion engines have several vibration sources, such as combustion, fuel injection, piston slap and valve operation. For machine condition monitoring or design improvement purposes, it is necessary to separate the vibration signals caused by different sources and then analyse them separately. However, traditional frequency analysis techniques are not very useful due to overlap of different sources over a wide frequency range. This paper separates the vibration signals, especially piston slap, by using blind source separation techniques with the intention of reavealing the potential of the new technique for solving mechanical vibration problems. The BSS method is briefly described and separation results for both simulated and measured data are presented.