Inductive rotational angle sensor and method for operating an inductive rotational angle sensor

Abstract

The invention relates to an inductive rotational angle sensor comprising a circuit board (1) with an excitation conduction path (1.4) and a first, second and third receiver conduction path (1.1 1, 1.12, 1.21, 1.22, 1.31, 1.32) attached thereto. The rotational angle sensor further comprises a partitioning element (2) with a first and second partitioning track (2.2). The first and second partitioning track (2.1, 2.2) and the first and second receiver conduction path (1.1 1, 1.12; 1.21, 1.22) are configured such that signals (S1.1 1, S1.12) with a first period number (n1) can be produced by the first receiver conduction path (1.1 1, 1.12) and signals (S1.21, S1.22) with a second period number (n2) can be produced by the second receiver conduction path (1.21, 1.22). The partitioning element (2) further comprises a third partitioning track (2.3) so that signals (S1.31, S1.32) with the first period number (n1) can be produced by the third receiver conduction path (1.31, 1.32). The invention also comprises a method for operating a rotational angle sensor.

Description

technical field [0001] The invention relates to an inductive rotational angle sensor for determining a relative angular position according to the preamble of claim 1 and a method for operating an inductive rotational angle sensor according to claim 8 . Background technique [0002] Inductive rotary angle sensors are used, for example, in rotary encoders to determine the angular position of two mechanical parts that can rotate relative to each other. In an inductive rotation angle sensor, the excitation winding (Erregerspule) and the receiving winding For example, it is applied in the form of conductor tracks on a common printed circuit board, which is fixedly connected, for example, to the stator of the rotary encoder. Opposite this circuit board there is a further printed circuit board (Platine), which is often constructed as a graduated disk, on which the conductive and non-conductive surfaces are applied alternately at periodic intervals As an indexing range or indexin...

AI Technical Summary

Problems solved by technology

For example, such mounting tolerances or mounting inaccuracies can lead to oscillating (Taumelbewegung) of the rotor or tilting (Schiefstellung) of the rotor and / or stator

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