Absolute multilateration between spheres
Absolute multilateration between spheres
复制标题
球体之间的绝对多边测量
DOI：
10.1088/1361-6501/aa5a37
复制
发表时间：
2017
影响因子：
2.4
通讯作者：
Muelaner J
中科院分区：
文献类型：
--
作者：
Muelaner J
环境效应通常限制了在诸如飞机生产和粒子加速器对准等应用中的大尺度坐标测量的准确性。本文提出了一种新的测量技术的初步设计与分析和模拟表明，它可以克服环境的限制，提供一个大规模的坐标测量精度的阶跃变化。被称为绝对球面测量（AMS），它涉及使用绝对距离干涉测量法直接测量普通钢球对之间的距离。每个球体的大部分仍然可以作为参考基准，而激光路径可以免受环境干扰。作为一个单一的比例尺，这可以提供准确的比例信息，用于仪器验证或网络测量缩放。由于球体可以同时从多个方向进行测量，因此还允许高度精确的基于多边形的坐标测量作为大规模基准结构进行局部测量，或集成在装配工具、坐标测量机或机器人机械中。分析和模拟表明，AMS可以自校准，以实现约0.49 µm的单个1 m标尺的独立不确定度的理论组合标准不确定度。它还表明，与中央参考系统中的1 µm− 1标准不确定度相结合，这可能导致在细长的1 m × 20 m网络上的坐标标准不确定度量值为42 µm。这将是一个足够的精度阶跃变化，使下一代航空航天结构与自然层流和部分到部分的可互换性。
Environmental effects typically limit the accuracy of large scale coordinate measurements in applications such as aircraft production and particle accelerator alignment. This paper presents an initial design for a novel measurement technique with analysis and simulation showing that that it could overcome the environmental limitations to provide a step change in large scale coordinate measurement accuracy. Referred to as absolute multilateration between spheres (AMS), it involves using absolute distance interferometry to directly measure the distances between pairs of plain steel spheres. A large portion of each sphere remains accessible as a reference datum, while the laser path can be shielded from environmental disturbances. As a single scale bar this can provide accurate scale information to be used for instrument verification or network measurement scaling. Since spheres can be simultaneously measured from multiple directions, it also allows highly accurate multilateration-based coordinate measurements to act as a large scale datum structure for localized measurements, or to be integrated within assembly tooling, coordinate measurement machines or robotic machinery. Analysis and simulation show that AMS can be self-aligned to achieve a theoretical combined standard uncertainty for the independent uncertainties of an individual 1 m scale bar of approximately 0.49 µm. It is also shown that combined with a 1 µm m− 1 standard uncertainty in the central reference system this could result in coordinate standard uncertainty magnitudes of 42 µm over a slender 1 m by 20 m network. This would be a sufficient step change in accuracy to enable next generation aerospace structures with natural laminar flow and part-to-part interchangeability.
双色激光二极管干涉测量的合成波长稳定。
影响因子：
1.9
作者：
P. D. de Groot;S. Kishner
通讯作者：
S. Kishner
影响因子：
3.8
作者：
Dale, John;Hughes, Ben;Warden, Matthew S.
通讯作者：
Warden, Matthew S.