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相关概念视频

Gyroscope: Precession01:24

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Precession can be demonstrated effectively through a spinning top. If a spinning top is placed on a flat surface near the surface of the Earth at a vertical angle and is not spinning, it will fall over due to the force of gravity producing a torque acting on its center of mass. However, if the top is spinning on its axis, it precesses about the vertical direction, rather than topple over due to this torque. Precessional motion is a combination of a steady circular motion of the axis and the...
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Global Positioning System (GPS) technology has revolutionized navigation and positioning, but its accuracy is often compromised by various errors. These errors, stemming from environmental, satellite, and receiver-related factors, require careful mitigation to ensure reliable performance across applications.Atmospheric ErrorsGPS signals travel through the Earth’s ionosphere and troposphere, introducing delays which affect accuracy. The ionosphere is strongly influenced by charged particles,...
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Pipe Flowrate Measurement: Problem Solving

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A spray tank system is engineered to uniformly distribute a pest-control liquid across plants by using a pressurized mechanism. The tank, pressurized to 150 kPa, holds the pesticide at a height of 0.80 meters. Liquid flows from the tank through a 1.9 meter pipe with a diameter of 0.015 meters, angled at 0.698 radians, ultimately reaching a 0.007 meter nozzle that sprays the pesticide. Accurate calculation of the system's flow rate is crucial to ensure uniform application, and this is...
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In pipe flow measurement, orifice, nozzle, and Venturi meters are commonly used to determine fluid flowrates by constricting the flow area, which increases fluid velocity and reduces pressure. This pressure difference, governed by Bernoulli's principle and adjusted for real-world conditions, is essential for calculating flowrate. Each meter type is suited to specific applications based on accuracy, efficiency, and compatibility with various flow conditions.
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Instantaneous Center of Zero Velocity

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General plane motion, often observed in a rolling wheel, refers to a type of movement where the wheel is simultaneously rotating and translating. This complex motion can be understood by breaking it down into individual components.
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The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
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相关实验视频

Updated: Jun 11, 2025

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
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基于光纤陀螺仪的自动导航系统为管道杆的零速度校正方法.

Wenbo Zhang1, Lu Wang1, Yutong Zu1

  • 1School of Engineering and Technology, China University of Geosciences, Beijing 100083, China.

Sensors (Basel, Switzerland)
|September 28, 2024
PubMed
概括
此摘要是机器生成的。

一个新的算法准确地检测到管道提升中的静止期,显著减少光纤陀螺仪 (FOG) 惯性导航系统 (INS) 的累积错误. 这提高了自动道开采操作的引导精度.

关键词:
雾里面的人卡尔曼过器可以过.TCZVDVD 在线播放管道上升的管道上升.

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科学领域:

  • 地质技术工程 地质技术工程
  • 导航系统 导航系统
  • 信号处理 信号处理

背景情况:

  • 使用光纤陀螺仪 (FOG) 的管道提升引导系统提供高安全性和自主性.
  • 惯性导航系统 (INS) 随着时间的推移而遭受累积错误.
  • 准确的零速度更新 (ZUPU) 对于错误补偿至关重要,但在缓慢的管道提升操作中具有挑战性.

研究的目的:

  • 开发一个强大的零速度检测算法用于FOG-INS在管道提升.
  • 为了应对在缓慢运行过程中区分移动和静止状态的挑战.
  • 为了提高管道提升引导系统的定位精度和可靠性.

主要方法:

  • 建立了一个采用零速度更新 (ZUPT) 的卡尔曼波器模型.
  • 设计了一个三条件零速度检测 (TCZVD) 算法,结合了加速的移动方差 (MV),角度速率能量 (ARE) 和立场假设最佳估计 (SHOE).
  • 进行实验室和现场实验以验证算法的性能.

主要成果:

  • 该TCZVD算法实现了99.18%的零速度检测精度.
  • 定位误差减少到总距离的不到2%.
  • 现场实验证实了该算法在实际的管道提升环境中的适用性.

结论:

  • 拟议的TCZVD算法有效地抑制了FOG-INS.中的累积错误.
  • 该方法显著提高了管道提升操作的定位精度.
  • 这为管道提升自动引导技术提供了强大的解决方案.