Invention Grant
US08150144B2 Method for determining the rotational axis and the center of rotation of a vehicle wheel 有权
用于确定车轮的旋转轴线和旋转中心的方法

  • Patent Title: Method for determining the rotational axis and the center of rotation of a vehicle wheel
  • Patent Title (中): 用于确定车轮的旋转轴线和旋转中心的方法
  • Application No.: US12160354
    Application Date: 2007-07-02
  • Publication No.: US08150144B2
    Publication Date: 2012-04-03
  • Inventor: Guenter NobisSteffen AbrahamVolker Uffenkamp
  • Applicant: Guenter NobisSteffen AbrahamVolker Uffenkamp
  • Applicant Address: DE Stuttgart
  • Assignee: Robert Bosch GmbH
  • Current Assignee: Robert Bosch GmbH
  • Current Assignee Address: DE Stuttgart
  • Agent Michael J. Striker
  • Priority: DE102006035924 20060731
  • International Application: PCT/EP2007/056621 WO 20070702
  • International Announcement: WO2008/015063 WO 20080207
  • Main IPC: G06K9/00
  • IPC: G06K9/00
Method for determining the rotational axis and the center of rotation of a vehicle wheel
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 at least one bodywork feature in the evaluation undergo an analysis with respect to the effects of at least one of the influencing variables, steering lock angle, steering motion, driving surface unevenness, and change of speed, and that from the analysis, correction factors or compensation functions are obtained for correcting the effects.
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