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Blind separation of internal combustion engine vibration signals by a deflation method

Identifieur interne : 002A44 ( PascalFrancis/Curation ); précédent : 002A43; suivant : 002A45

Blind separation of internal combustion engine vibration signals by a deflation method

Auteurs : XIANHUA LIU [Australie] ; Robert B. Randall [Australie] ; Jérome Antoni [France]

Source :

RBID : Pascal:08-0237959

Descripteurs français

English descriptors

Abstract

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.
pA  
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A05       @2 22
A06       @2 5
A08 01  1  ENG  @1 Blind separation of internal combustion engine vibration signals by a deflation method
A11 01  1    @1 XIANHUA LIU
A11 02  1    @1 RANDALL (Robert B.)
A11 03  1    @1 ANTONI (Jérome)
A14 01      @1 School of Mechanical Engineering, The University of Western Australia @2 Perth 6009 @3 AUS @Z 1 aut.
A14 02      @1 School of Mechanical and Manufacturing Engineering, The University of New South Wales @2 Sydney 2052 @3 AUS @Z 2 aut.
A14 03      @1 Laboratoire Roberval de Mécanique, Universitè de Technologie de Compiegne @2 60205 Compiègne @3 FRA @Z 3 aut.
A20       @1 1082-1091
A21       @1 2008
A23 01      @0 ENG
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A60       @1 P
A61       @0 A
A64 01  1    @0 Mechanical systems and signal processing
A66 01      @0 GBR
C01 01    ENG  @0 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.
C02 01  X    @0 001D12F01
C02 02  X    @0 001B40F30M
C02 03  X    @0 001B40F30R
C03 01  X  FRE  @0 Vibration @5 06
C03 01  X  ENG  @0 Vibration @5 06
C03 01  X  SPA  @0 Vibración @5 06
C03 02  X  FRE  @0 Source vibration @5 07
C03 02  X  ENG  @0 Vibration source @5 07
C03 02  X  SPA  @0 Fuente vibración @5 07
C03 03  X  FRE  @0 Basse fréquence @5 08
C03 03  X  ENG  @0 Low frequency @5 08
C03 03  X  SPA  @0 Baja frecuencia @5 08
C03 04  X  FRE  @0 Haute fréquence @5 09
C03 04  X  ENG  @0 High frequency @5 09
C03 04  X  SPA  @0 Alta frecuencia @5 09
C03 05  X  FRE  @0 Moteur combustion interne @5 15
C03 05  X  ENG  @0 Internal combustion engine @5 15
C03 05  X  SPA  @0 Motor explosión interna @5 15
C03 06  X  FRE  @0 Combustion @5 16
C03 06  X  ENG  @0 Combustion @5 16
C03 06  X  SPA  @0 Combustión @5 16
C03 07  X  FRE  @0 Cliquetis moteur @5 17
C03 07  X  ENG  @0 Knock(engine) @5 17
C03 07  X  SPA  @0 Golpeteo motor @5 17
C03 08  X  FRE  @0 Identification aveugle @5 23
C03 08  X  ENG  @0 Blind identification @5 23
C03 08  X  SPA  @0 Identificación ciega @5 23
C03 09  X  FRE  @0 Méthode séparation @5 24
C03 09  X  ENG  @0 Separation method @5 24
C03 09  X  SPA  @0 Método separación @5 24
C03 10  X  FRE  @0 Traitement signal @5 25
C03 10  X  ENG  @0 Signal processing @5 25
C03 10  X  SPA  @0 Procesamiento señal @5 25
C03 11  X  FRE  @0 Méthode moindre carré @5 26
C03 11  X  ENG  @0 Least squares method @5 26
C03 11  X  SPA  @0 Método cuadrado menor @5 26
C03 12  X  FRE  @0 . @4 INC @5 82
N21       @1 154
N44 01      @1 OTO
N82       @1 OTO

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Pascal:08-0237959

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