Optics: measuring and testing – Angle measuring or angular axial alignment – Wheel alignment with photodetection
Patent
1995-12-28
1998-03-03
Hellner, Mark
Optics: measuring and testing
Angle measuring or angular axial alignment
Wheel alignment with photodetection
356155, 33288, 3320318, G01B 11275
Patent
active
057241287
ABSTRACT:
Apparatus and method for determining the alignment positions and orientations of vehicle wheels includes optical targets mounted on the wheels and optical targets mounted in a fixed relationship with respect to the surface on which the wheels are disposed. Video cameras are used to obtain images of the various optical targets and a computer is responsive to the images of the targets to determine values of wheel alignment parameters of the vehicle relative to said surface on which the vehicle wheels roll. Methods of calibrating such an apparatus and methods using such apparatus to determine the flatness of the surface on which the wheels roll are also disclosed.
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Daniel B. January, SAE Technical Paper Series, Steering Geometry and Caster Measurement Feb. 25-Mar. 1, 1985.
Hellner Mark
Hunter Engineering Company
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