An energy operator approach to joint application of amplitude and frequency-demodulations for bearing fault detection
An energy operator approach to joint application of amplitude and frequency-demodulations for bearing fault detection
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DOI：
10.1016/j.ymssp.2009.12.007
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发表时间：
2010-07-01
影响因子：
8.4
通讯作者：
Bozchalooi, I. Soltani
中科院分区：
文献类型：
--
作者：
Liang, Ming;Bozchalooi, I. Soltani
轴承是最常用的部件之一。轴承故障可能导致机械系统完全失速、生产设施无法预测的生产率损失或关键任务设备的灾难性后果。因此，轴承故障检测和诊断是大多数预防性维护程序的重要组成部分。本文提出了一种与参数无关但实现简单的故障检测技术。Teager能量运算器是为提取机械系统测量的振动信号的幅度和频率调制而量身定做的。将调频信息结合到所提出的轴承故障检测方法中，消除了干扰消除步骤的需要。由于幅度解调(AD)也是能量算子所固有的，因此可以从能量变换信号的频谱中检测故障频率。仿真数据和实验数据均验证了该方法的有效性。(C)2010爱思唯尔有限公司。保留所有权利。
Bearings are among the most frequently used components. Bearing failure could lead to complete stall of a mechanical system, unpredicted productivity loss for production facilities or catastrophic consequence for mission-critical equipment. As such, bearing fault detection and diagnosis is an imperative part of most of preventive maintenance procedures. This paper presents a parameter independent yet simple to implement fault detection technique. The Teager energy operator is tailored to extract both the amplitude and frequency modulations of the vibration signals measured from mechanical systems. The incorporation of the frequency modulation information into the proposed bearing fault detection method has eliminated the need for interference removal steps. As the amplitude demodulation (AD) is also inherent in the energy operator, the fault frequency can be detected from the spectrum of the energy-transformed signal. The effectiveness of the proposed method has been validated using both simulated and experimental data. (C) 2010 Elsevier Ltd. All rights reserved.