| 主权项 |
1. A method for chassis measurement, the method comprising:
providing a chassis measurement system having four measurement heads situated in known positions relative to one another, each of which has a monocular image recording device, the position of the measurement heads relative to one another being known, and a distance of front measurement heads from one another differing from a distance of rear measurement heads from one another; recording one of a respective front wheel and a measurement target attached thereto, in at least one run-in position of the vehicle, using the rear measurement heads; recording each of (i) the four wheels and (ii) the measurement targets attached thereto, using each of the four measurement heads, in a first main measurement position and in at least one second main measurement position of the vehicle, wherein each of (i) the four wheels or (ii) the measurement targets attached thereto is recorded by the same respective measurement head in the first main measurement position and in the at least one second main measurement position, and wherein each of (i) the four wheels and (ii) the measurement targets attached thereto moves relative to its respective measurement head between the first main measurement position and the at least one second main measurement position of the vehicle; executing local 3D reconstructions using a local scale to determine translation vectors, rotation vectors, and wheel angles of rotation between these positions, as well as centers of rotation and axes of rotation of the wheels, from one of (i) recorded images of the wheels and (ii) the measurement targets attached thereto; adapting the four local scales of the main measurement positions to a common, global scale through compensation of the vehicle movement; transferring the global scale to the 3D reconstruction of the run-in measurement positions via compensation of the identical geometry of the front axle;determining an absolute scale for the measurement heads from one of (i) the measurements of the front wheels and (ii) the measurement targets attached thereto in the run-in positions and in the main measurement positions; anddetermining the chassis measurement parameters of the vehicle, including at least one of a camber, a partial toe, and a total toe;
wherein at least one of (a) and (b) is satisfied, wherein (a) includes image sequences made up of one of (i) a plurality of images of the front wheels and (ii) the measurement targets attached thereto, which are recorded during each of the recordings made by the rear measurement heads in the run-in positions of the vehicle, and wherein (b) includes image sequences made up of one of (i) a plurality of images of the wheels and (ii) the measurement targets attached thereto being recorded during each of the recordings made by the measurement heads in the main measurement positions of the vehicle. |
