Patent ID: 6761075
Filing Date: 2004-07-13
Classification: G01L

Abstract:
A method for determining a rotation angle (&PHgr;) and/or an angular difference (&dgr;) in a divided shaft (3) with phase tracks (1a, 1b, 2a, and 2b) and an interposed torque rod, wherein associated sensors (5) and an evaluation unit are used to obtain respective ambiguous phase signals (&agr;1, &agr;2) with regard to a rotation of the shaft (3), characterized inthat at least two phase signals (&agr;1, &agr;2) are added up in a weighted fashion to produce a signal S, that a non-integer portion D of the signal S is calculated, wherein the portion D is proportional to the angular difference (&dgr;), and that the torque (M) acting on the shaft (3) is determined from the angular difference (&dgr;) through multiplication with the spring rate (C) of the interposed torque rod.