An Online and Vision-Based Method for Fixtured Pose Measurement of Nondatum Complex Component

The nondatum complex component is a complex component and does not have reliable positioning/measurement datum during the modification process. With the rapid development of the aerospace industry, the manual manner of shape trimming for the nondatum complex component needs to be replaced by laser a...

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Bibliographic Details
Published in:IEEE transactions on instrumentation and measurement 2020-06, Vol.69 (6), p.3370-3376
Main Authors: Hou, Dongxiang, Mei, Xuesong, Huang, Wangwang, Li, Jiang, Wang, Chunjie, Wang, Xu
Format: Article
Language:English
Subjects:
Aerospace industry
Burrs
Coordinate measuring machines
Deformable models
Deformation
Deformation effects
Deformation mechanisms
Error analysis
Error reduction
Feature extraction
Iterative methods
iterative optimization
laser automatic shape trimming
Measurement by laser beam
Measurement uncertainty
Model accuracy
nondatum complex component (NDCC)
online pose measurement
Optimization
Strain
Three-dimensional displays
Trimming
Vision
vision based
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Summary:The nondatum complex component is a complex component and does not have reliable positioning/measurement datum during the modification process. With the rapid development of the aerospace industry, the manual manner of shape trimming for the nondatum complex component needs to be replaced by laser automatic shape trimming. This study develops a vision-based, online, and high-precision method for measuring the fixtured pose error of the component. Limited by burrs, deformation, and complex structure, the feature-based method is not applicable to this component. The present method is based on iterative optimization and not required feature extraction. To improve pose measurement efficiency and accuracy, the optimization of the reference model can effectively reduce the error caused by deformation. The experiment results showed that the proposed method is fast and accurate, and satisfied the measurement requirement of the fixtured component's pose in six degrees-of-freedom.
ISSN:0018-9456
1557-9662
DOI:10.1109/TIM.2019.2937530