适应性盲色解卷分解及其应用在滚动轴承的复合故障诊断中
Wei Dong1,2, Bin Feng3, Yulun Liu3
1School of Machinery and Automation, Weifang University, Weifang, 261061, China. 1962899053@qq.com.
Scientific reports
|April 30, 2025
概括
一种自适应性盲解卷法有效地检测复合材料滚动轴承的故障,即使有强烈的噪音. 该技术改进了现有的方法,提高了机器的运行安全.
科学领域:
- 机械工程 机械工程
- 信号处理 信号处理
- 状态监控 状态监控
背景情况:
- 检测滚动轴承故障对于旋转机械的运行安全至关重要.
- 最大二次循环静止性盲解卷 (CYCBD) 可以提取弱断层特征,但与复合断层和噪声作斗争.
- 现有的盲目解卷方法在复杂的故障场景中经常失败,背景干扰很大.
研究的目的:
- 提出一种自适应性盲解卷 (ABDD) 方法,以克服复合轴承故障诊断中CYCBD的局限性.
- 为了增强弱故障的提取周期脉冲特征在强大的背景噪声的存在.
- 准确诊断滚动轴承的单一和复合故障.
主要方法:
- 开发了一种基于改进的CYCBD的自适应性盲解卷 (ABDD) 方法.
- 构建了一个有限冲动响应 (FIR) 过器银行,用于在信号的整个频段中对故障频率进行细分.
- 利用改进的CYCBD获得故障频率锁定过器模式,按相关性曲解 (CK) 排序,以进行最佳模式选择和频谱分析.
主要成果:
- 通过ABDD方法成功地提取了轴承复合材料故障特征.
- 模拟和实验结果验证了ABDD在噪音条件下的有效性.
- 与经典特征分解和盲目解卷方法相比,ABDD在单个和复合故障方面表现出优异的性能.
结论:
- 拟议的ABDD方法为诊断滚动轴承故障,特别是噪音环境中的复合故障提供了强大的解决方案.
- ABDD显著提高了旋转机械中故障特征提取的准确性和可靠性.
- 这一进步有助于提高机械的运行安全性和预测性维护策略.
相关概念视频
Bearings: Problem Solving
255
Understanding the calculations and concepts related to double-collar bearings is essential for engineers and designers to optimize the performance of these components in various applications. By analyzing the bearing under different conditions, one can ensure that it can withstand the forces and moments experienced during operation. This knowledge enables better decision-making when designing and selecting bearings for specific purposes and configurations. Consider a double-collar bearing with...
255
Deconvolution
113
Deconvolution, also known as inverse filtering, is the process of extracting the impulse response from known input and output signals. This technique is vital in scenarios where the system's characteristics are unknown, and they must be inferred from the observable signals.
Deconvolution involves several mathematical techniques to derive the impulse response. One common approach is polynomial division. In this method, the input and output sequences are treated as coefficients of...
Deconvolution involves several mathematical techniques to derive the impulse response. One common approach is polynomial division. In this method, the input and output sequences are treated as coefficients of...
113
Journal Bearings
598
Journal bearings are mechanical components that support and provide lateral stability to rotating shafts and axles. They are crucial in reducing friction, wear, and vibration in machinery such as engines, turbines, and pumps. The principle behind journal bearings is forming a thin lubricant film between the bearing surface and the rotating shaft, which minimizes direct contact and reduces frictional forces.
To better understand the concept of journal bearings, consider a rope winch with dry or...
To better understand the concept of journal bearings, consider a rope winch with dry or...
598
Collar Bearings
1.2K
Collar bearings are essential in various machines designed to support axial loads on rotating shafts. Depending on the specific application and requirements, they can be found with single or multiple collars.
1.2K


