EFFECTIVE VIBRATION ANALYSIS OF IC ENGINES USING CYCLOSTATIONARITY. PART I-A METHODOLOGY FOR CONDITION MONITORING
EFFECTIVE VIBRATION ANALYSIS OF IC ENGINES USING CYCLOSTATIONARITY. PART I-A METHODOLOGY FOR CONDITION MONITORING
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DOI：
10.1006/jsvi.2002.5062
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发表时间：
2002-11
影响因子：
4.7
通讯作者：
J. Antoni;J. Daniere;F. Guillet
中科院分区：
文献类型：
--
作者：
J. Antoni;J. Daniere;F. Guillet
通过分析内燃机的振动来监测内燃机的状态已被认为是一个困难的问题，主要是因为所涉及的信号的复杂性。本文介绍了一种原始的方法，明确考虑到振动信号的非平稳性。其关键思想是将问题重新表述为循环平稳过程的框架，这非常适合描述在循环基础上产生的物理现象。介绍了一种基于角度采样和循环信号处理的通用方法。它是设计特设诊断指标的坚实基础。
Condition monitoring of IC engines through the analysis of their vibrations has been recognized to be a difficult issue, essentially because of the complexity of the signals that are involved. This paper introduces an original approach which explicitly takes into account the non-stationary nature of the vibration signals. The key idea is to rephrase the issue into the framework of cyclostationary processes, which is perfectly suited for describing physical phenomena generated on a cyclic basis. A general methodology is introduced that is based on angular sampling and cyclic signal processing. It serves as a strong basis for designing ad hoc diagnostic indicators.