相关实验视频

Updated: May 21, 2025

Author Spotlight: Efficient Image Recognition Using Directional Gradient Histogram Technique and Support Vector Machines

Author Spotlight: Efficient Image Recognition Using Directional Gradient Histogram Technique and Support Vector Machines

Published on: January 5, 2024

滚动轴承故障诊断的振动信号分析基于深浅的融合特征

Ahmed Chennana¹, Ahmed Chaouki Megherbi², Noureddine Bessous³

¹Dept. Electrical Engineering, Laboratory of LI3C, University of Mohamed Khider, Biskra, Algeria. ahmed.chennana@univ-biskra.dz.

Scientific reports

|March 19, 2025

概括

这项研究引入了一种先进的轴承故障诊断系统,将新的手工制作功能 (MBH-LPQ) 与深度学习 (VGGish) 结合起来,以提高机器的可靠性. 混合模型在杂的数据集上实现了非常高的准确性,高达100%,防止了工业停机.

科学领域:

工程工程师工程师工程师
机器学习机器学习
信号处理信号处理

背景情况:

轴承故障诊断对于工业机械的可靠性和防止停机时间至关重要.
传统方法与不同的操作条件和不断变化的工业需求作斗争.
需要改进,强大的轴承故障诊断系统.

研究的目的:

提出一个高效和强大的系统来诊断轴承故障,使用深层和浅层特征的组合.
为了提高诊断性能,利用手工制作和深度学习功能的互补优势.
解决复杂工业环境中现有的故障检测方法的局限性.

主要方法:

开发了一种新的手工制作的浅特征描述器:局部相量化的多块组图 (MBH-LPQ).
使用音频谱图,利用从经过音频训练的VGGish卷积神经网络 (CNN) 模型中的深度特征.
在使用加权总和 (WS) 的得分水平上,结合浅 (MBH-LPQ) 和深 (VGGish) 的特征.

主要成果:

拟议的混合型号在轴承故障诊断方面实现了高分类准确性.
MBH-LPQ 浅层描述器表现出色的性能.
经过音频训练的VGGish模型在任务中表现出最佳表现,在CWRU数据集上达到98.95%,在PU数据集上达到100%.
综合方法显著提高了噪音数据集的诊断准确性.

结论:

混合式方法有效地结合了浅层和深层特征,用于优越的轴承故障诊断.
拟议的系统提供了一个强大的解决方案,用于在具有挑战性的,杂的工业条件下识别轴承故障.
这项研究有助于加强机械维护,减少停机时间和提高工业生产率.

关键词:

轴承故障诊断轴承故障诊断轴承故障诊断轴承故障诊断在美国,CNN是CNN.深度功能功能功能功能深度功能在MBH-LPQQ中使用.浅浅的描述符是一个浅浅的描述符.转移学习转移学习 VGGish 的意思是什么?振动信号表示振动.

更多相关视频

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

Published on: October 28, 2022

Design and Analysis for Fall Detection System Simplification

Design and Analysis for Fall Detection System Simplification

Published on: April 6, 2020

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...

Discrete Fourier Transform

Discrete Fourier Transform

The Discrete Fourier Transform (DFT) is a fundamental tool in signal processing, extending the discrete-time Fourier transform by evaluating discrete signals at uniformly spaced frequency intervals. This transformation converts a finite sequence of time-domain samples into frequency components, each representing complex sinusoids ordered by frequency. The DFT translates these sequences into the frequency domain, effectively indicating the magnitude and phase of each frequency component present...

IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations

IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations

Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single...

Residual Stresses in Circular Shafts

Residual Stresses in Circular Shafts

In materials that exhibit elastic and plastic behavior, known as elastoplastic materials, residual stresses can accumulate when these materials experience plastic deformation. This deformation arises from either high levels of shearing stress or significant strains. Residual stresses are internal stresses that persist within a material after removing the external force causing deformation. This phenomenon is demonstrated when observing the behavior of a shaft under torque; notably, the...

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...

Relative Motion Analysis using Rotating Axes

Relative Motion Analysis using Rotating Axes

Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...