Method for determining the rotational axis and the center of rotation of a vehicle wheel

US8150144B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Guenter Nobis · Wissen, DE
• Steffen Abraham · Hildesheim, DE
• Volker Uffenkamp · Ludwigsburg, DE

Key dates

• Filing date: Jul 2, 2007
• Grant date: Apr 3, 2012
• Expiry date: Jan 24, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G01B2210/30
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a method for determining the rotational axis and the rotating center of a vehicle wheel by means of at least two image capture units assigned to each other in position and situation during the journey of the vehicle, and by means of an analysis unit arranged downstream of said units, processing the recorded image information, taking into account multiple wheel features (10) present on the wheel or attached for the measurement, and by means of at least one bodywork feature present on the bodywork or attached for the measurement, wherein 2D-coordinates of the wheel features (10) and of the at least one bodywork feature are synchronously detected, and from these the 3D-coordinates of the features are calculated at certain time intervals and counted back to a previously established reference time point or corresponding reference position of the vehicle wheel, taking into account the distance traveled by the at least one bodywork feature relative to the reference position. To achieve measurement results that are as error free as possible, especially also when traveling on a real driving surface, it is provided that the paths of the wheel features (10) and of the…