Angular and temporal determinism of rotating machine signals: The diesel engine case

被引：16
作者：
Leclere, Q. [1 ]
Pruvost, L. [1 ]
Parizet, E. [1 ]
机构：
[1] INSA, Lab Vibrat Acoust, F-69621 Villeurbanne, France
来源：
MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2010年 / 24卷 / 07期
关键词：
Cyclostationarity; Diesel engine noise; Source separation; NOISE; SEPARATION; COMBUSTION;
D O I：
10.1016/j.ymssp.2010.05.006
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The aim of this work is to highlight theoretically and experimentally the effect of cyclic speed fluctuations on the temporal and angular deterministic parts of signals recorded on rotating machines operating in steady state conditions. The deterministic parts of such cyclostationary signals are defined by their periodic components, or their CS1 part (order 1 of cyclostationarity). It can be assessed by using cyclic averaging, using a time or angle sampling, leading to an estimation of the temporal or angular deterministic part. If the instantaneous speed of the machine is not purely periodic, the temporal and angular deterministic parts will be different. These differences are firstly theoretically considered, and then experimentally assessed in the case of a diesel engine. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2012 / 2020
页数：9
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