Wheel alignment measuring appts. for motor vehicle - has angle pick=ups providing signals which indicate wheel offset angle in relation to driving axis

摘要

The appts.for aligning automobile wheels has six angle pickups (1-6) of which four (3,-6) are fixed to the wheels (7-10) lined up with their axes, while two pickups (1,2) are fixed to the front wheels (7,8) by rigid support arms (17,18). The pickups give electrical outputs and are joined together by springs (19-21) running between pairs of pickups which have equal and opposite effects on each other. By processing the signals from the pickups, readings are produced for total tracking angle of the front wheels, total tracking angle of the rear wheels, single-wheel tracking angle of the front wheels in relation to the geometrical driving axis, and single-wheel tracking angle of the rear wheels in relation to the axis of symmetry, as well as for the geometrical driving axis, the wheel offset angle of the front wheels with respect to the geometrical driving axis, and the wheel offset angle of the front wheels w.r.t. the axis of symmetry.