基于牙根菌株和GAF伪图像的行星变速箱故障分类
Dongyang Hu1, Hang Niu1, Guang Wang1
1School of Control and Computer Engineering, North China Electric Power University, Baoding 071003, China.
ISA transactions
|August 17, 2024
概括
这项研究引入了一种使用根系数据和伪图像的新变速器故障分类方法,在行星变速箱故障识别中达到96.84%的准确性. 该技术克服了加速信号中常见的干扰问题.
科学领域:
- 机械工程 机械工程
- 状态监控 状态监控
- 机器学习 机器学习
背景情况:
- 传统的加速信号分析用于行星变速箱故障检测受到干扰的阻碍.
- 精确识别变速箱的故障对于防止灾难性故障和确保运行可靠性至关重要.
研究的目的:
- 为行星变速箱开发和验证一个强大的轮故障分类方法.
- 通过利用应变数据和先进的机器学习来克服基于加速的方法的局限性.
主要方法:
- 使用光纤传感器直接获取环形轮轮根菌株数据.
- 通过重新采样和时间域同步平均计算预处理应变信号.
- 将应变数据编码为格拉米安角场 (GAF) 图像进行分析.
- 使用CN-EfficientNet与对比学习进行特征提取和分类.
主要成果:
- 在行星变速箱的各种故障类型中实现了96.84%的分类准确度.
- 与其他常见分类模型相比,表现出优越的性能.
- 梯度CAM可视化提供了故障识别网络决策的可解释性.
结论:
- 拟议的方法有效地使用根菌株和伪图像对行星变速箱的故障进行分类.
- 应变数据,GAF和CN-EfficientNet的整合为增强变速箱状况监测提供了一个有前途的方法.
- 该研究强调了深度学习与对比学习的潜力,用于复杂的机器故障诊断.
相关概念视频
Transmission Shafts: Problem Solving
218
Designing a solid shaft that transmits power from a motor to a machine tool involves a series of calculations to ensure the shaft can withstand the stresses applied by bending moments and torques. First, calculate the torque exerted on the gear, considering the power transmitted by the shaft and its rotational speed. Following this, compute the tangential forces acting on the gears, which directly relate to the torque and the gear radius.
Next, use bending moment diagrams for the shaft to...
Next, use bending moment diagrams for the shaft to...
218
Design of Transmission Shafts - Stress Analysis
332
Designing a transmission shaft requires a thorough understanding of the stresses induced by bending moments and torques, especially in systems where power is transferred through gears. These forces create force-couple systems at the centers of the shaft's cross-sections, leading to both transverse and torsional loading. Although shearing stresses from transverse loads are typically smaller than those from torques and are often overlooked, the significant normal stresses from these loads...
332
Screw: Problem Solving
408
In mechanical engineering, the interaction between a threaded screw shaft and a plate gear involves analyzing the resisting torque on the plate gear that can be overpowered when a specific torsional moment is applied to the shaft. To better comprehend this concept, consider a generic situation with a threaded screw shaft with a given mean radius and lead and a plate gear with a specified mean radius. The coefficient of static friction between the screw and gear is also provided.
To evaluate the...
To evaluate the...
408
Design of Transmission Shafts
287
The design of a transmission shaft is governed by two primary specifications: the power it transmits and its rotational speed. These parameters guide the selection of the shaft's material and cross-sectional dimensions, ensuring that the material's maximum shearing stress remains within the elastic limit while transmitting the desired power at the given speed. The system's power is intrinsically linked to the applied torque. The torque applied to the shaft can be calculated by...
287
Plastic Deformation in Circular Shafts
182
When materials are subjected to forces that surpass their yield strength, they undergo a process known as plastic deformation. This results in a permanent alteration or strain in their structure. This concept can be specifically applied to circular shafts, where the deformation leads to a change in its shape. The precise evaluation of this plastic deformation requires understanding the stress distribution within the circular shaft, which is achieved by calculating the maximum shearing stress in...
182
Stresses in a Shaft
358
The shaft PQ is subjected to a twisting force when equal and opposite torques are applied on either side. A section that cuts perpendicular to the shaft's axis at any arbitrary point R is examined to understand this. When the free-body diagram of the QR segment is analyzed, it reveals the shearing forces exerted by the PR portion onto the QR segment as the shaft experiences twisting.
Applying equilibrium conditions to the QR segment establishes that the internal shearing forces within the...
Applying equilibrium conditions to the QR segment establishes that the internal shearing forces within the...
358


