Patent ID: 8925380
Filing Date: 2015-01-06
Classification: G01M

Abstract:
1. A method for determining quality of a gearing system having at least two gear wheels comprising: setting within a measuring interval a sequence of target angles of rotation of a first gear wheel; measuring for each of the target angles of rotation an output angle of rotation of a second gear wheel; calculating a plurality of theoretical output angles of rotation upon the basis of the plurality of target angles of rotation using at least one transmission ratio of the first gear wheel and the second gear wheel; obtaining angle of rotation differences between the plurality of output angles of rotation and the plurality of theoretical output angles of rotation; forming a sequence of cumulative values which are associated with the angle of rotation differences, a cumulative value, which is associated with a present angle of rotation difference, comprising a total of angle of rotation differences which precede the present angle of rotation difference within the measuring interval; determining, based on the sequence of cumulative values, at least one of: wherein the at least one amplitude value, which is associated with the first, second or third frequency component, constitutes a quality measure of the gear wheel arrangement.