Abstract Although the Spectral Correlation is one of the most versatile spectral tools to
analyze cyclostationary signals (ie signals comprising hidden periodicities or repetitive …

The last decade has witnessed spectacular advances in vibration-based fault detection of
rotating machines and, in particular, rolling element bearings. Nowadays, the related state of …

摘要变转速下, 传统的等时间间隔采样所获得的机械动态信号已不再保持原有的周期特性, 此时,
无法采用经典的基于傅里叶变换理论谱分析方法来分析信号. 为此, 各种针对变转速机械设备 …

Nowadays, the vibration analysis of rotating machine signals is a well-established
methodology, rooted on powerful tools offered, in particular, by the theory of cyclostationary …

Condition monitoring of rotating machines in speed-varying conditions remains a
challenging task and an active field of research. Specifically, the produced vibrations belong …

This paper provides an overview of the recent advances made in the field of fault diagnosis
of industrial machines operating under variable speed conditions. First, the shortcomings of …

In speed-varying conditions, the assumption of cyclostationarity of rolling-element bearing
vibrations is jeopardized. The emitted signal comprises an interaction between (i) time …

Vibration analysis of machines operating under non-stationary operational conditions
requires special attention. This refers to the necessity of use of order tracking algorithms …

Latest researches have asserted the eligibility of angle/time cyclostationarity in analyzing
machine signals when operating under variable speed conditions. A core descriptor in this …

In this paper, the authors propose a method for extracting second-order cyclostationary
components from a vibration signal. For a known cyclic frequency, the proposed algorithm …