基于振动-温度融合的滚动轴承性能退化适应性识别技术的研究
Zhenghui Li1,2, Lixia Ying1, Liwei Zhan2
1College of Mechanical and Electrical Engineering, Harbin Engineering Univesity, Harbin 150500, China.
Sensors (Basel, Switzerland)
|August 14, 2025
概括
本研究引入了一种振动-温度融合方法,用于准确评估滚动轴承性能退化. 这种新的方法增强了健康指标的表征和生命阶段的识别,优于仅使用振动的方法.
科学领域:
- 机械工程 机械工程
- 状态监控 状态监控
- 数据科学数据科学数据科学
背景情况:
- 传统的滚动轴承性能降解评估严重依赖于振动信号,往往导致识别过渡状态的准确性较低.
- 整合多源传感器数据,如温度,可能会提高诊断能力.
研究的目的:
- 开发基于振动-温度融合的自适应方法,用于增强滚动轴承性能降解的评估.
- 提高识别轴承生命阶段过渡的准确性.
主要方法:
- 从振动和温度信号构建了一个多维的时间频率特征集.
- 引入了特征选的复合灵敏度指数 (CSI),随后进行了相互信息聚类和对参数重新选择的权优化.
- 使用自关核回归 (AFF-AAKR) 和时间残余分析来增强健康指标 (HI) 描述的适应性特征融合.
- 开发了一种双重标准的自适应式自下而上的合并算法 (DC-ABUM) 用于生命阶段识别.
主要成果:
- 拟议的振动-温度融合方法与传统的只有振动的方法相比,显示出更高的性能.
- 整合温度数据和先进的特征工程改善了轴承退化趋势的表征.
- 适应融合和生命阶段识别算法有效捕获过渡状态.
结论:
- 振动-温度融合为滚动轴承性能退化评估提供了更强大,更准确的方法.
- 开发的自适应方法,包括CSI,AFF-AAKR和DC-ABUM,显著提高了轴承健康和剩余使用寿命的识别.
- 这种融合战略为提高条件监测系统的可靠性提供了一个有希望的方向.
相关概念视频
01:24Bearings: Problem Solving
327
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...
327
01:12Temperature Dependent Deformation
192
In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
192
01:22Bearing Stress
1.1K
Bearing stress refers to the contact pressure between two separate bodies. To visualize this, imagine a bolt thrust through a plate. The bolt applies a force to the plate, which exerts an equal but opposite force back onto the bolt. This force isn't just a singular entity but a compilation of numerous smaller forces distributed across the contact surface between the bolt and the plate.
Due to the intricacy of these microforces, an average value, known as bearing stress, is often used by...
Due to the intricacy of these microforces, an average value, known as bearing stress, is often used by...
1.1K
01:09Thermal Stress
2.6K
If the temperature of an object is changed while it is prevented from expanding or contracting, the object is subjected to stress. The stress is compressive if the object expands in the absence of constraint and tensile if it contracts. This stress resulting from temperature change is known as thermal stress. It can be quite large and can cause damage. To avoid this stress, engineers may design components so they can expand and contract freely. For instance, on highways, gaps are deliberately...
2.6K
01:23Collar Bearings
1.4K
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.
1.4K
01:15Design of Transmission Shafts - Stress Analysis
499
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...
499