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相关概念视频

Flat Belts: Problem Solving01:28

Flat Belts: Problem Solving

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Flat belts are crucial in many industrial applications as they help transmit power from one pulley to another. The concept of forces and moments is used to determine the maximum moment on a pulley. For instance, consider a flat belt that wraps around two pulleys, A and B, with radii of 30 cm and 10 cm, respectively. The angle between the belt and the horizontal is 20 degrees at the pulleys. As pulley B rotates clockwise and drives pulley A, tension T2 is caused at one end of the belt, while...
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Frictional Forces on Flat Belts01:28

Frictional Forces on Flat Belts

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Flat belts are commonly used in various industrial applications for transmitting power from one pulley to another. When a flat belt is wrapped around a set of pulleys, it experiences different tensions at the driving pulley ends due to the friction between the belt and pulley surface. When the pulley moves in a counterclockwise direction, the tension T2 on the opposite side of the pulley where the belt is moving away from is higher than the tension T1 on the side where the belt is moving...
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Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

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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.
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Relative Motion Analysis - Velocity01:24

Relative Motion Analysis - Velocity

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A stroke engine has a slider-crank mechanism that converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider.
When an external force is exerted, it sets the crank into a rotational movement. This, in turn, instigates the motion of the connecting rod, leading to what is referred to as a general plane motion. This process involves two key points - point A on the connecting rod...
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Relative Motion Analysis using Rotating Axes01:25

Relative Motion Analysis using Rotating Axes

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Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
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Relative Motion Analysis using Rotating Axes - Acceleration01:22

Relative Motion Analysis using Rotating Axes - Acceleration

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Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame. The absolute velocity of point B is determined by adding the absolute velocity of point A, the relative velocity of point B in the rotating frame, and the effects caused by the angular velocity within the rotating frame.
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相关实验视频

Updated: Jun 8, 2025

Fabrication and Operation of a Nano-Optical Conveyor Belt
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基于改进的YOLOv8算法检测输送带偏差的研究.

Yunfeng Ni1, Haixin Cheng2, Ying Hou1

  • 1Affiliation College of Xi'an University of Science and Technology, Xian, China.

Scientific reports
|November 6, 2024
PubMed
概括

这项研究引入了改进的YOLOv8算法,用于检测输送带偏差. 改进后的模型实现了高精度和速度,使实时监控和减少带故障造成的经济损失.

关键词:
双FPN_双重注意力输送带的偏差 输送带的偏差偏差判断方法的偏差判断方法.有效的SESE有效的SESE在MHSASA中,MHSA是MHSA.这就是YOLOv8的意义.

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

  • 工业自动化 工业自动化
  • 机器视觉 机器视觉 机器视觉
  • 故障检测系统 故障检测系统

背景情况:

  • 输送带偏差是带式输送系统中常见且严重的故障,造成重大经济损失和环境污染.
  • 传统的检测方法在故障定位和分析方面缺乏精度,无法满足复杂工业环境中的实时检测需求.

研究的目的:

  • 开发一种改进的基于YOLOv8的算法,以高效,准确地实时检测输送带偏差.
  • 增强特征提取,特征融合和注意力机制,以提高检测性能.

主要方法:

  • 将增强式挤压激发 (ESE) 模块集成到C2f中,以改进滚筒和皮带的特征提取.
  • 在子网络中开发BiFPN_DoubleAttention模块,以增强功能融合和注意力.
  • 在头部网络中集成多头自我注意 (MHSA) 机制,以捕捉小目标的位置特征.

主要成果:

  • 在自建数据集上,获得了98.1%的准确性和99.0%的平均平均精度 (mAP0.5).
  • 证明了每秒46 (FPS) 的检测速度,满足实时要求.
  • 有效地处理环境变化和干扰,以进行可靠的检测.

结论:

  • 建议改进的YOLOv8算法显著提高了输送带偏差检测的准确性和效率.
  • 这种方法为工业带式输送系统的实时诊断提供了可行的解决方案.
  • 这些进步解决了传统方法的局限性,提供了更好的故障定位和分析准确性.