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相关概念视频

Relative Motion Analysis - Acceleration01:10

Relative Motion Analysis - Acceleration

815
A slider-crank mechanism 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. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...
815
Relative Motion Analysis using Rotating Axes - Acceleration01:22

Relative Motion Analysis using Rotating Axes - Acceleration

754
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.
Time differentiation is...
754
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

704
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...
704
Relative Motion Analysis using Rotating Axes01:25

Relative Motion Analysis using Rotating Axes

880
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.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
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Distance Measurements by Taping01:18

Distance Measurements by Taping

415
Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
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相关实验视频

Updated: Jan 16, 2026

Evaluation of an Exclusive Spur Dike U-Turn Design with Radar-Collected Data and Simulation
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基于激光雷达的安全信封检测与加速仪和DTW用于入侵定位在过山车.

Huajie Wang1,2, Zhao Zhao1,2, Yifeng Sun1,2

  • 1Technology Innovation Center of Health Management of Large-Scale Amusement Device, State Administration for Market Regulation, Beijing 100029, China.

Micromachines
|September 27, 2025
PubMed
概括

这项研究引入了一种用于过山车的新型安全信封探测器 (SE-detector). 它使用LiDAR和加速度计来改善碰撞检测并提高安全检查的效率.

关键词:
李达尔 (LiDAR) 是一种激光雷达.动态时间扭曲.过山车 过山车 过山车安全信封安全信封

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Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
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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:

  • 机器人和自动化 机器人和自动化
  • 运输安全运输安全
  • 传感器技术 传感器技术

背景情况:

  • 自动驾驶系统的传统安全周边因乘客移动和环境变化而不同于过山车的需求.
  • 目前使用移动框架的过山车安全检查效率低下,容易出现错误.
  • 标准安全体积不能准确地反映与过山车运营相关的动态风险.

研究的目的:

  • 开发一款用于过山车安全的新型安全信封探测器 (SE-探测器).
  • 为了提高入侵的检测和改善安全距离测量.
  • 提高过山车安全检查的效率和可靠性.

主要方法:

  • 在过山车辆周围实施客户定义的虚拟安全包裹.
  • 使用光检测和测距 (LiDAR) 来测量安全距离和检测障碍物.
  • 集成加速度计与动态时间扭曲 (DTW) 算法,以根据车辆加速精确确定入侵位置.
  • 采用广角摄像头来增强环境感知.

主要成果:

  • 该SE检测器成功地创建了一个虚拟的安全包裹,并测量安全距离.
  • 使用LiDAR数据检测到障碍物入侵.
  • 用DTW处理的车辆加速数据有助于确定入侵地点.
  • 该系统记录了检查结果,提供了全面的安全评估.

结论:

  • 开发的SE检测器在过山车安全检查方面取得了重大进展.
  • 这项技术提高了检测潜在碰撞的准确性和效率.
  • 综合系统通过提供详细可靠的检查数据来提高整体安全性.