Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Multimachine Stability01:25

Multimachine Stability

532
Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
532
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

677
Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
677
Three-Phase Short Circuit—Unloaded Synchronous Machine01:21

Three-Phase Short Circuit—Unloaded Synchronous Machine

641
Conducting a three-phase short circuit test on an unloaded synchronous machine helps understand its impact on the system. The AC fault current's oscillogram, with the DC offset removed, reveals that the waveform amplitude decreases from an initially high value to a steady-state level for one phase of the machine.
This behavior occurs due to the magnetic flux produced by the short-circuit armature currents. Initially, these currents follow high-reluctance paths but eventually shift to...
641
Sequence Networks of Rotating Machines01:24

Sequence Networks of Rotating Machines

467
A Y-connected synchronous generator, grounded through a neutral impedance, is designed to produce balanced internal phase voltages with only positive-sequence components. The generator's sequence networks include a source voltage that is exclusively in the positive-sequence network. The sequence components of line-to-ground voltages at the generator terminals illustrate this configuration.
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...
467
Node Analysis for AC Circuits01:14

Node Analysis for AC Circuits

612
Consider an angioplasty system featuring a catheter equipped with a turbine, a critical tool for removing plaque deposits from coronary arteries. This intricate medical device operates using a circuit model reminiscent of a dual-node RLC circuit powered by a current-controlled voltage source.
To unravel the complexities of this system, nodal analysis is employed, a powerful technique founded on Kirchhoff's current law (KCL), which remains valid for phasors. AC circuits can effectively be...
612
Distributed Loads: Problem Solving01:21

Distributed Loads: Problem Solving

1.1K
Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
1.1K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

A case report of synchronous bilateral breast cancer with distinct histological subtypes and favorable long-term survival.

Frontiers in oncology·2026
Same author

The impact of drought stress on the physiological biochemical indexes and metabolites in Panax notoginseng.

Scientific reports·2026
Same author

Impact of Evolving Antiemetic Prophylaxis on Chemotherapy-Induced Nausea and Vomiting (CINV): A Five-Year Comparative Study in Sichuan, China (2018-2023).

Cancer management and research·2026
Same author

SGMR-LPR: A Semantic-Guided Network Robust to Movable Objects for LiDAR-Based Place Recognition.

Sensors (Basel, Switzerland)·2026
Same author

Reinventing Cellulose into Sustainable and Versatile Bioplastics via Molecular-Scale Design.

Research (Washington, D.C.)·2026
Same author

Case Report: Serum IgG4-negative multifocal IgG4-related hepatic inflammatory pseudotumor: dissociation between circulating IgG4 and local immune activation.

Frontiers in immunology·2026

相关实验视频

Updated: Jan 8, 2026

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
06:45

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

2.1K

基于旋转机械多图形卷积的域自适应故障诊断算法.

Yixiang Lu1, Yuelong Huang1, De Zhu1

  • 1Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education, Anhui Engineering Laboratory of Human-Robot Integration System and Intelligent Equipment, School of Electrical Engineering and Automation, Anhui University, Hefei 230601, China.

ISA transactions
|December 18, 2025
PubMed
概括
此摘要是机器生成的。

一个新的域适应多图形卷积网络 (DAM-GCN) 在可变条件下改善轴承故障诊断. 这种方法捕获复杂的数据结构,增强概括性和优于当前最先进的技术.

关键词:
相反的学习学习.域名适应领域适应错误诊断是一个错误的诊断.图形的卷积可以表示.

更多相关视频

Author Spotlight: Efficient Image Recognition Using Directional Gradient Histogram Technique and Support Vector Machines
08:27

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

Published on: January 5, 2024

1.6K
Design, Instrumentation and Usage Protocols for Distributed In Situ Thermal Hot Spots Monitoring in Electric Coils using FBG Sensor Multiplexing
10:52

Design, Instrumentation and Usage Protocols for Distributed In Situ Thermal Hot Spots Monitoring in Electric Coils using FBG Sensor Multiplexing

Published on: March 8, 2020

6.1K

相关实验视频

Last Updated: Jan 8, 2026

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
06:45

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

2.1K
Author Spotlight: Efficient Image Recognition Using Directional Gradient Histogram Technique and Support Vector Machines
08:27

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

Published on: January 5, 2024

1.6K
Design, Instrumentation and Usage Protocols for Distributed In Situ Thermal Hot Spots Monitoring in Electric Coils using FBG Sensor Multiplexing
10:52

Design, Instrumentation and Usage Protocols for Distributed In Situ Thermal Hot Spots Monitoring in Electric Coils using FBG Sensor Multiplexing

Published on: March 8, 2020

6.1K

科学领域:

  • 机械工程 机械工程
  • 人工智能的人工智能
  • 信号处理 信号处理

背景情况:

  • 工业轴承面临着变化的操作条件,挑战现有的故障诊断方法.
  • 当前的深度学习方法往往无法捕捉故障数据中的复杂结构关系,限制了概括.
  • 缺乏领域适应性阻碍了不同工作环境中的模型性能.

研究的目的:

  • 提出一个新的域调整多图形卷积网络 (DAM-GCN),用于稳固的轴承故障诊断.
  • 提高深度学习模型的概括能力,以在不同条件下进行故障检测.
  • 提高工业环境中轴承故障诊断的准确性和可靠性.

主要方法:

  • 使用卷积神经网络 (CNN) 提取特征.
  • 多图形构造 (Top-k,k-NN,半径图) 来捕获局部,相似性和密度数据特征.
  • 进行对比学习以提高特征的区分能力和表现力.
  • 联合优化分类和域调整损失,用于域调整.

主要成果:

  • DAM-GCN有效地捕捉了多视角断层结构特征.
  • 对比式学习增强了特征的区分能力,以便更好地进行比较.
  • 域调整最小化了源域和目标域之间的分布和图形结构差异.
  • 实验结果表明,与现有的最先进的方法相比,性能优越.

结论:

  • 拟议的DAM-GCN方法在可变的操作条件下显著提高了轴承故障诊断.
  • 多图形方法与对比学习和域调整相结合,可以提高概括性.
  • 这种方法为工业轴承故障诊断提供了更强大,更有效的解决方案.