相关实验视频

Updated: Sep 8, 2025

A Novel Biaxial Testing Apparatus for the Determination of Forming Limit under Hot Stamping Conditions

A Novel Biaxial Testing Apparatus for the Determination of Forming Limit under Hot Stamping Conditions

Published on: April 4, 2017

基于ITD-ILBP-汉克尔矩阵的滚动轴承故障识别

Mingyue Yu¹, Ziru Ma¹, Yingdong Gao¹

¹School of Automation, Shenyang Aerospace University, Shenyang, Liaoning Province 110136, China.

ISA transactions

|September 6, 2025

概括

这项研究引入了使用内在时间尺度分解 (ITD) 和新一代1D局部二进制模式 (1D-LBP) 量子化的改进的轴承故障诊断方法. 通过减少噪声和提取关键故障特征,ITD-ILBP-Hankel方法提高了准确性.

科学领域:

机械工程
信号处理
错误诊断

背景情况:

轴承故障表现出非静态性和非线性,使故障特征的提取复杂化.
传统的1D局部二进制模式 (1D-LBP) 对噪声敏感,导致不准确的量化和诊断.
现有的方法难以有效地隔离和分析复杂的振动信号中的故障特征.

研究的目的:

通过解决噪声干扰和不精确的量化来提高轴承故障诊断的准确性.
提出一种新的联合方法,将改进的1D-LBP与内在时间尺度分解 (ITD) 和汉克尔矩阵分析结合起来.
开发一个可靠的信号处理策略,以可靠地识别轴承故障特征.

主要方法:

一个信号预处理策略,涉及到第一阶差异和ITD分解,以获得适当的旋转元件 (PRC).
一个改进的1D-LBP量化标准,使用平方根平均值 (RMS) 作为减轻噪声和极端值影响的门.
在低维空间中构建汉克尔矩阵并重建信号以减少干扰并提取隐藏的特征.

主要成果:

拟议的ITD-ILBP-汉克尔方法有效地降低了噪声,并提高了1D-LBP定量化的准确性.
组件智能信号处理和重建成功突出轴承故障特征.
错误的特征频率被准确地提取,使得可靠的错误类型判断.

结论:

与经典技术相比,开发的ITD-ILBP-Hankel方法在轴承故障诊断方面有了显著的改进.
新的量子化标准和信号处理策略提高了故障特征提取的稳定性和有效性.
这种方法为在复杂的工业环境中诊断轴承故障提供了可靠的工具.

关键词:

一个D-LBP 轴承共同差异性发现故障汉克尔矩阵本质时间尺度分解量化情况

更多相关视频

Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes

Knowledge Based Cloud FE Simulation of Sheet Metal Forming Processes

Published on: December 13, 2016

Biaxial Mechanical Characterizations of Atrioventricular Heart Valves

Biaxial Mechanical Characterizations of Atrioventricular Heart Valves

Published on: April 9, 2019

相关概念视频

Bearings: Problem Solving

Bearings: Problem Solving

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...

Thin-Walled Hollow Shafts

Thin-Walled Hollow Shafts

In analyzing a thin-walled hollow shaft subjected to torsional loading, a segment with width dx is isolated for examination. Despite its equilibrium state, this segment faces torsional shearing forces at its ends. These forces are quantitatively described by the product of the longitudinal shearing stress on the segment's minor surface and the area of this surface, leading to the concept of shear flow. This shear flow is consistent throughout the structure, indicating a uniform distribution...

Pivot Bearings

Pivot Bearings

In mechanical systems, bearings are crucial in facilitating relative motion between two components while minimizing friction and wear. They help distribute various loads (radial, axial or a combination of both loads) across machinery parts, ensuring smooth and efficient operation.
A pivot bearing is a specialized type of bearing designed to support axial loads on a rotating shaft. The bearing surface, or the pivot, is positioned at the end of a shaft to support the axial thrust. The pivot may...

Collar Bearings

Collar Bearings

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.

Internal Loadings in Structural Members: Problem Solving

Internal Loadings in Structural Members: Problem Solving

When designing or analyzing a structural member, it is important to consider the internal loadings developed within the member. These internal loadings include normal force, shear force, and bending moment. Engineers can ensure that the structural member can support the applied external forces by calculating these internal loadings.
To illustrate this, let's consider a beam OC of 5 kN, inclined at an angle of 53.13° with the horizontal and supported at both ends. Determine the internal...

Journal Bearings

Journal Bearings

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...