基于振动的日志轴承的磨损状况估计使用卷积自动编码器
Cihan Ates1, Tobias Höfchen1,2, Mario Witt2
1Institute of Thermal Turbomachinery, Karlsruhe Institute of Technology (KIT), 76137 Karlsruhe, Germany.
Sensors (Basel, Switzerland)
|November 25, 2023
概括
本研究引入了一种数据驱动的方法,用于使用振动数据预测期刊轴承磨损. 使用卷积自编码器 (CAE) 的新方法可以准确地估计轴承状况,即使有有限的标记数据.
科学领域:
- 机械工程 机械工程
- 数据科学数据科学数据科学
- 状态监控 状态监控
背景情况:
- 预测性维护对于机械系统,特别是日志轴承至关重要,以防止故障并优化操作.
- 传统方法通常需要大量的标记数据或直接访问组件,这对实时监控构成了挑战.
- 振动分析是评估设备健康状况的关键非侵入性技术.
研究的目的:
- 利用振动数据开发数据驱动的方法来间接评估期刊轴承的磨损.
- 探索传感器配置,下方采样方法和采样率对预测准确度的影响.
- 利用深度学习,特别是卷积自动编码器 (CAE),用于磨损状态估计.
主要方法:
- 一个新的实验设置被用来加速日志轴承的磨损.
- 从17个轴承收集了振动数据,使用各种传感器和安装配置.
- 特征工程涉及探索下方采样技术和采样率.
- 使用卷积自编码器 (CAE) 来从处理的振动数据中提取潜态向量.
主要成果:
- 从CAE中提取的潜态向量与日志轴承的实际磨损状态有很强的相关性.
- 在四个实验设置中,CAE模型在估计磨损时获得了平均91%的皮尔森系数.
- 该方法证明了有效的磨损估计,即使有有限的标记训练数据.
结论:
- 拟议的数据驱动方法准确地估计了使用振动数据和CAE的日志轴承磨损.
- 这种方法为期刊轴承的预测性维护提供了具有成本效益和效率的解决方案.
- 这些发现突显了无监督深度学习在机械系统的状态监控方面的潜力.
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