多尺度的动态并行收缩网络用于航空液压的故障诊断及其可泛化的应用
1School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, China.
ISA transactions
|August 16, 2024
概括
一个新的多尺度动态并行收缩网络 (MDPSN) 有效地处理航空液压的振动信号. 这种方法通过在多个信号尺度上通过自适应性去除噪声来提高故障诊断的准确性.
科学领域:
- 机械工程 机械工程
- 信号处理 信号处理
- 人工智能的人工智能
背景情况:
- 来自航空液压的振动信号经常受到多尺度特征和噪声的影响.
- 准确的故障诊断对于航空安全和维护至关重要.
研究的目的:
- 开发一个新的深度学习网络,以加强航空液压的故障诊断.
- 为了应对多尺度特征和振动信号中的噪声腐败所带来的挑战.
主要方法:
- 开发一个多层次的动态并行收缩网络 (MDPSN).
- 引入一个动态并行收缩模块 (DPSM) 适应软值.
- 聚合多尺度特征,用于全球表示和值生成.
主要成果:
- 在不同的尺度上,MDPSN可自适应地将与噪声相关的特征缩小到零.
- 与其他五种方法相比,该方法实现了更高的诊断准确性.
- 对航空液压和轴承数据集的验证,具有不同类型的噪音.
结论:
- 拟议的MDPSN有效地学习了互补的多尺度故障特征.
- 在DPSM中,自适应值显著提高了降噪和诊断准确度.
- MDPSN为旋转机械的可靠故障诊断提供了一个有希望的方法.
相关概念视频
Design Example: Creating a Hydraulic Model of a Dam Spillway
148
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
148
Typical Model Studies
352
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
352
Multiple Pipe Systems
729
Multipipe systems consist of complex configurations of interconnected pipes designed to transport fluids efficiently across intricate networks. They are essential in engineering applications requiring precise control over flow distribution, pressure, and head loss. They are categorized into series, parallel, loop, and network configurations, each distinguished by unique flow characteristics and applications.
Series Configuration
In a series configuration, fluid flows sequentially from one pipe...
Series Configuration
In a series configuration, fluid flows sequentially from one pipe...
729
Application of Pascal's Law
8.4K
Pascal's experimentally proven observations—that a change in pressure applied to an enclosed fluid is transmitted undiminished throughout the fluid and to the walls of its container—provide the foundations for hydraulics, one of the most important developments in modern mechanical technology.
Hydraulic systems are used to operate automotive brakes, hydraulic jacks, and numerous other mechanical systems. We can derive a relationship between the forces in a simple hydraulic system...
Hydraulic systems are used to operate automotive brakes, hydraulic jacks, and numerous other mechanical systems. We can derive a relationship between the forces in a simple hydraulic system...
8.4K


