Robert Boschgmbh

Dmg Mori Bielefeld Gmbh

Daniel Muhle

Steffen Abraham

Christian Knoll

Axel Wendt

Matthias Roland

Anke Svensson

Andreas Haja

Matthias Gebhard

Andreas Gruetzmann

Timo Wissbrock

In a method for determining a wheel or axle geometry of a vehicle, the following steps are provided: illuminating a wheel region with structured and with unstructured light during a motion of at least one wheel and/or of the vehicle; acquiring multiple images of the wheel region during the illumination, in order to create a three-dimensional surface model having surface parameters, a texture model having texture parameters, and a motion model having motion parameters of the sensed wheel region; calculating values for the surface parameters, the texture parameters, and the motion parameters using a variation computation as a function of the acquired images, in order to minimize a deviation of the three-dimensional surface model, texture model, and motion model from image data of the acquired images; and determining a rotation axis and/or a rotation center of the wheel as a function of the calculated values of the motion parameters.

Method and measuring assembly for determining the wheel or axle geometry of a vehicle

A chassis measuring system comprises an illumination device for producing a structured illumination (), which is developed in such a way that it produces a structured image on a measuring head () situated opposite in the transverse vehicle direction, a reference surface () facing in the same direction as the illumination device (), on which a structured image produced by an illumination device () of the measuring head () situated opposite in the transverse vehicle direction may be projected, and at least one measuring camera () facing in the same direction as the illumination device (), which is developed in such a way that it detects the structured image on the reference surface () of the opposite measuring head () in order to determine the position parameters of the measuring head ().

Measuring head for a chassis measuring system, chassis measuring system and method for determining the position parameters of measuring heads of a chassis measuring system

A method for checking the referencing of at least two measuring heads of a contactless chassis measuring system includes: detecting at least one geometry detail of a vehicle using the measuring heads; determining an initial position of the geometry detail in the coordinate system associated with each measuring head; transforming the initial position into a shared coordinate system; executing a relative movement between the measuring heads and the vehicle; determining a final position of the at least one geometry detail in the coordinate system associated with each measuring head; transforming the final position of the geometry detail into the shared coordinate system; determining the movement vectors from the difference between the final position and the initial position of the at least one geometry detail; checking the movement vectors for coincidence.

Method and device for checking the referencing of measuring heads in a chassis measuring system

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Herford, Germany

Daniel Muhle