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Proceedings Paper

Measurement error analysis of the 3D four-wheel aligner
Author(s): Qiancheng Zhao; Tianlong Yang; Dongzhao Huang; Xun Ding
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Paper Abstract

Positioning parameters of four-wheel have significant effects on maneuverabilities, securities and energy saving abilities of automobiles. Aiming at this issue, the error factors of 3D four-wheel aligner, which exist in extracting image feature points, calibrating internal and exeternal parameters of cameras, calculating positional parameters and measuring target pose, are analyzed respectively based on the elaborations of structure and measurement principle of 3D four-wheel aligner, as well as toe-in and camber of four-wheel, kingpin inclination and caster, and other major positional parameters. After that, some technical solutions are proposed for reducing the above error factors, and on this basis, a new type of aligner is developed and marketed, it’s highly estimated among customers because the technical indicators meet requirements well.

Paper Details

Date Published: 10 October 2013
PDF: 7 pages
Proc. SPIE 8916, Sixth International Symposium on Precision Mechanical Measurements, 89162C (10 October 2013); doi: 10.1117/12.2035870
Show Author Affiliations
Qiancheng Zhao, Hunan Univ. of Science and Technology (China)
Tianlong Yang, Hunan Univ. of Science and Technology (China)
Dongzhao Huang, Hunan Univ. of Science and Technology (China)
Xun Ding, Hunan Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 8916:
Sixth International Symposium on Precision Mechanical Measurements
Shenghua Ye; Yetai Fei, Editor(s)

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