초록 ▼

Method and apparatus for non-contact evaluation of wheel alignment for vehicles utilizes laser-based range-finders mounted at locations between which the vehicle is driven for test purposes. Range-finding at three locations on the wheel enables wheel attitude to be determined. Locations are chosen s

Method and apparatus for non-contact evaluation of wheel alignment for vehicles utilizes laser-based range-finders mounted at locations between which the vehicle is driven for test purposes. Range-finding at three locations on the wheel enables wheel attitude to be determined. Locations are chosen so that range-finding is carried out where a significant contour in the wheel assembly occurs, thereby enabling a clear and characteristic signal to be obtained from relatively simple apparatus.

대표청구항 ▼

[ We claim:] [1.] A method of vehicle wheel alignment testing comprising the steps of:a) providing a light source and sensor apparatus at a known location and known attitude;b) locating a wheel to be tested with respect to the source and sensor apparatus; andc) carrying out range-finding steps with

[ We claim:] [1.] A method of vehicle wheel alignment testing comprising the steps of:a) providing a light source and sensor apparatus at a known location and known attitude;b) locating a wheel to be tested with respect to the source and sensor apparatus; andc) carrying out range-finding steps with respect to the wheel at spaced locations thereon to determine the attitude of the wheel;said range-finding steps including range-finding at plural locations on the wheel where a significant abrupt range-affecting contour change occurs;said locations all being at known radial distances from the center of the wheel, whereby the attitude of the wheel can be determined.