Patent ID: 8948444
Filing Date: 2015-02-03
Classification: G01B,G01M,G06K

Abstract:
1. A method for determining at least one of tumbling motion of a vehicle wheel and tumbling motion of a measurement object attached to the vehicle wheel in the context of an axle measurement, the tumbling motion being executed relative to a precise wheel axis of rotation of the vehicle wheel, at least one orientation value being determined by an evaluation device between the precise wheel axis of rotation and a reference axis, the method comprising: acquiring during travel of the vehicle, by at least one image recording unit, at least two wheel features that are present on the vehicle wheel or are attached for the measurement; determining, by the evaluation device, a wheel coordinate system and a feature coordinate system using the recorded wheel features, the evaluation device situated downstream from the image recording unit; and setting, by the evaluation device, the wheel coordinate system and the feature coordinate system into relation to one another to determine the orientation value; wherein the orientation value is determined by at least one angle that defines the position of the reference axis and the precise wheel axis of rotation to one another; and wherein the angle is defined by at least one of an opening angle δ of a cone that is defined by the reference axis, and a phase direction α that describes the position of the reference axis on the cone.