Patent ID: 8578765

Claim:
A method for wheel suspension alignment for a vehicle, comprising: providing a wheel suspension alignment system having four measuring heads situated in a known position with respect to one another, each having a monocular picture recording device, a relative position of the measuring heads with respect to one another being known; recording in each case one of one wheel or a measuring target mounted on one wheel in an initial position of the vehicle, using each of the four measuring heads; shifting the vehicle from the initial position to at least one further position; recording in each case one of one wheel or a measuring target mounted on one wheel of the vehicle standing in the further position, using each of the four measuring heads; recording a reference target having a known pattern mounted on the vehicle, using one of the four measuring heads in at least one of the initial position and the further position of the vehicle; measuring a geometrical dimension of the recorded reference target; comparing the measured geometrical dimension to an actual geometrical dimension of the recorded reference target; identifying from the comparing an absolute scale for obtaining an actual value from a measured value; carrying out local 3D reconstructions for determining translation vectors, rotation vectors and wheel rotational angles between the positions, as well as wheel rotational centers and wheel rotational axes of the wheels; and determining wheel suspension alignment parameters of the vehicle including at least one actual value of at least one of camber, single toe, total toe, wheelbase, and thread width using the absolute scale.