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Proceedings Paper

Research on tangent plane algorithm for spatial position of vehicle wheel
Author(s): Wei Wei; Changku Sun; Yunxia Qu; Xiaodong Zhang; Shenghua Ye
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Paper Abstract

A non-contact vehicle wheel alignment parameters measurement system based on line-structured laser sensors is described. The spatial position of vehicle wheel is determined by the tangent plane of the vehicle wheel tire. Three line-structured sensors conduct each wheel, and the tangent plane is calculated by 3D coordinate of each point on three characteristic curves of the tire. Consequently it is important to ascertain the tangent plane of the tire precisely for this system. This paper details the working principle of the system and coordinates unification technique of multiple line-structured laser sensors. Furthermore it presents a specific method for determining the tangent plane according to the characteristic of the laser image. It is composed of ellipse fitting in 2D space and searching algorithm in 3D space. Experimental results show that the algorithm is reasonably efficient, practical and reliable. And the deviations of alignment parameters are less than 2'.

Paper Details

Date Published: 20 January 2005
PDF: 8 pages
Proc. SPIE 5633, Advanced Materials and Devices for Sensing and Imaging II, (20 January 2005); doi: 10.1117/12.573254
Show Author Affiliations
Wei Wei, Tianjin Univ. (China)
Changku Sun, Tianjin Univ. (China)
Yunxia Qu, Tianjin Univ. (China)
Xiaodong Zhang, Tianjin Univ. (China)
Shenghua Ye, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 5633:
Advanced Materials and Devices for Sensing and Imaging II
Anbo Wang; Yimo Zhang; Yukihiro Ishii, Editor(s)

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