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相关概念视频

Distance Corrections01:15

Distance Corrections

24
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
24

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Reamed and unreamed intramedullary nailing for the treatment of open and closed tibial fractures: a subgroup analysis of randomised trials.

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Selective COX-2 inhibitor versus nonselective COX-1 and COX-2 inhibitor in the prevention of heterotopic ossification after total hip arthroplasty: a meta-analysis of randomised trials.

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[Study on evaluating sex determining region of the Y as an engrafting track of BMSCs transplantation for repairing osteonecrosis of the femoral head of rabbit].

Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery·2009
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Positive association between benign familial infantile convulsions and LGI4.

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Catalytic enantioselective synthesis of chiral phthalides by efficient reductive cyclization of 2-acylarylcarboxylates under aqueous transfer hydrogenation conditions.

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Significance of urinary liver-fatty acid-binding protein in cardiac catheterization in patients with coronary artery disease.

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Detection of underground objects from GPR data using a lightweight YOLO-based approach.

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Early systemic inflammatory-metabolic trajectory phenotypes are associated with survival outcomes in metastatic renal cell carcinoma treated with nivolumab.

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Water balance components in a dry-seeded rice-wheat system: Untangling the effects of tillage and mulching practices.

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Topological approaches to quantum tensor train compression via ZX-calculus and SVD.

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determinants of flood impacts and adaptive capacity among market vendors in Walukuba-Masese, Jinja city, Uganda.

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相关实验视频

Updated: May 16, 2025

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

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基于多束激光干扰仪的空间精度补偿方法的开发.

Lihua Lei1,2, Changjian Sun3, Zhangning Xie1,2

  • 1Shanghai Institute of Measurement and Testing Technology, Shanghai, 201203, China.

Scientific reports
|May 14, 2025
PubMed
概括
此摘要是机器生成的。

一个新的多束激光干扰仪系统同时测量CNC机床的6度自由度误差. 这种空间误差补偿显著提高了机床的精度和定位精度.

关键词:
准确度 准确度 准确度 准确度 准确度错误补偿 错误补偿 错误补偿 错误补偿激光干扰仪的激光干扰仪.空间定位是指空间定位.

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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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Implementation of a Reference Interferometer for Nanodetection
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相关实验视频

Last Updated: May 16, 2025

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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Implementation of a Reference Interferometer for Nanodetection
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科学领域:

  • 计量学 计量学 计量学
  • 机械工程 机械工程
  • 光学仪器仪器仪器仪器仪器仪器仪器仪器仪器仪器仪器仪器

背景情况:

  • 机床在多个自由度中表现出错误,影响精度.
  • 精确测量和补偿这些错误对于先进制造至关重要.

研究的目的:

  • 开发一个数学模型用于机床的空间错误.
  • 提出一个多束激光干扰仪,用于同时测量六度自由度误差.
  • 为数控机器创建一个空间误差测量和精度补偿系统.

主要方法:

  • 建立了运动轴误差的数学模型,并结合了12行方法校正.
  • 设计了一个多束激光干扰仪,使用四个激光进行多功能参数测量.
  • 基于干扰仪数据实现了一个基于空间精度补偿的软件算法.
  • 通过在不同空间坐标上的测量轴进行验证的角误差校正.

主要成果:

  • 实现了对六个自由度的同时测量误差.
  • 在线性定位精度 (96%),水平直度 (89%) 和垂直直度 (55%) 中显著改善.
  • 平均和最大定位偏差分别减少了88%和91%.

结论:

  • 拟议的多束激光干扰仪和空间误差补偿系统有效地提高了CNC机床的精度.
  • 该系统提供了一个可行的解决方案,通过先进的计量技术实现高精度制造.
  • 实验验证证证实了各种准确度指标的大幅改善.