Results 21 to 30 of about 3,631,896 (245)

Validation of the network method for evaluating uncertainty and improvement of geometry error parameters of a laser tracker

open access: yesPrecision engineering, 2021
Five National Metrology Institutes (NMIs) worked together to validate the assessment of laser tracker’s (LT) uncertainty for large scale dimensional metrology in subsequent measurements using the network method.
Octavio Icasio-Hernández   +4 more
semanticscholar   +1 more source

Optimization Method for Solution Model of Laser Tracker Multilateration Measurement

open access: yesMeasurement Science Review, 2016
Multilateration measurement using laser trackers suffers from a cumbersome solution method for high-precision measurements. Errors are induced by the self-calibration routines of the laser tracker software.
Chen Hongfang   +4 more
doaj   +1 more source

Data processing error accumulation of accelerator alignment control network

open access: yesHe jishu, 2021
BackgroundCompared with 2D+1D adjustment, three dimensional adjustment has a more rigorous theoretical basis. However, when the unconstrained three dimensional adjustment is applied to the observation values processing of the accelerator alignment ...
WANG Xiaolong   +20 more
doaj   +1 more source

Study of a transferring system for measurements in aircraft assembly [PDF]

open access: yesJournal of Intelligent Manufacturing and Special Equipment, 2022
Purpose – Aircraft assembly is the crucial part of aircraft manufacturing, and to meet the high-precision and high-efficiency requirements, cooperative measurement consisting of multiple measurement instruments and automatic assisted devices is being ...
Shuanggao Li   +3 more
doaj   +1 more source

Laser Tracker-Based on-the-Fly Machine Tool Calibration without Real-Time Synchronization

open access: yesJournal of Manufacturing and Materials Processing, 2023
Consistent high volumetric performance of machine tools is an essential requirement for high-quality machining. Periodic machine tool calibration ensures said performance and allows for timely corrective actions preventing scrap or rework.
Mark P. Sanders   +5 more
doaj   +1 more source

Application of laser tracker in the industrial measurement field

open access: yes, 2021
In recent years, with the rapid development of modern three-dimensional space technology, laser tracker has become a mature technology, high efficiency, stable and reliable performance of high-precision large-size measurement instruments in the ...
Chang’an Hu   +4 more
semanticscholar   +1 more source

Analysis of the effects of Eye-Tracker performance on the pulse positioning errors during refractive surgery

open access: yesJournal of Optometry, 2012
Purpose: To analyze the effects of Eye-Tracker performance on the pulse positioning errors during refractive surgery. Methods: A comprehensive model, which directly considers eye movements, including saccades, vestibular, optokinetic, vergence, and ...
Samuel Arba-Mosquera   +1 more
doaj   +1 more source

Application of genetic algorithm to multilateration measurement of the volumetric error in machine tools

open access: yesAdvances in Mechanical Engineering, 2016
The multilateration measurement with laser tracker has become a popular method for measuring the volumetric error of machine tools, owing to its advantages of high efficiency and large measurement range.
Haitong Wang   +4 more
doaj   +1 more source

A Method for Rapid Measurement of the Deformation and Spatial Attitude of Large Radar Antennas Inside Radomes

open access: yesIEEE Access, 2021
It is challenging to measure, analyze, and control the deformation and space attitude of antennas in narrow radomes through geometric measurement to ensure the accuracy of phased array radar application. In this manuscript, a method for rapid measurement
Xiao Guan, Yaming Xu, Cheng Xing
doaj   +1 more source

Laser tracker adaptive tuning.

open access: yesCoRR, 2020
The goal of the automatic tuning algorithm is to compute suitable values for the controller gains, including the proportional (Kp), integral (Ki), and derivative (Kd), as well as the tachometer feedback gain (Kv).
openaire   +4 more sources

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