Blind Separation of Internal Combustion Engine Vibration Signals by a Deflation
MetadataShow full item record
Internal combustion engines have several vibration sources, such as combustion, fuel injection, piston slap and valve operation. It is necessary to separate the different vibration sources and then analyze each of them individually. This paper attempts to separate the vibration sources by blind source separation techniques and proposes a combination of the Blind Least Mean Square algorithm with a deflation method to separate several sources. The combined methods are first verified on simulated sources and then applied to engine signals. Separation results show that cylinder pressure consists of two sources—one is a smooth low frequency part due to compression and expansion caused by piston movement; the other is the high frequency part due to combustion.
Showing items related by title, author, creator and subject.
Liu, Xianhua; Randall, R.; Antoni, J. (2005)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 ...
Gao, Xiangpeng (2011)Coal is an important part of Australia's energy mix and is expected to continue to play an essential role in supplying cheap and secure energy for powering the Australian economy in the foreseeable future. However, ...
δ13C and δD measurements of volatile organic compounds in a variety of emissions by thermal desorption compound specific isotope analysisVitzthum von Eckstaedt, Christiane D. (2011)Volatile organic compounds (VOCs) can be related to different compound classes but they all have a distinct vapour pressure allowing them to enter the atmosphere under ambient conditions. VOCs can undergo various reactions ...