/Measuring Arrangement And Method For Determining An Angular Position Of A Target That Is Rotatable About An Axis
Abstract

A measuring arrangement for determining an angular position of a target that is rotatable about an axis is described, having a stationary coil arrangement comprising a transmitter coil and at least two receiver coils, and having a rotatable, electrically conductive target, wherein the transmitter coil is acted on by a transmission current that induces voltage signals in the receiver coils as a function of the angular position of the target. A measurement and evaluation unit is configured to determine the angular position of the target from the amplitudes of the voltage signals. According to the invention, an expected value for the phases of the voltage signals is additionally determined from the phase of the transmission current, and the determined angular position of the target is designated as error-free if the phases of the voltage signals match the expected value within a defined tolerance range.

Full Text

What is claimed is:

A measuring arrangement for determining an angular position of a target that is rotatable about an axis is described, having a stationary coil arrangement comprising a transmitter coil and at least two receiver coils, and having a rotatable, electrically conductive target, wherein the transmitter coil is acted on by a transmission current that induces voltage signals in the receiver coils as a function of the angular position of the target. A measurement and evaluation unit is configured to determine the angular position of the target from the amplitudes of the voltage signals. According to the invention, an expected value for the phases of the voltage signals is additionally determined from the phase of the transmission current, and the determined angular position of the target is designated as error-free if the phases of the voltage signals match the expected value within a defined tolerance range.
Timeline
Filed
04/13/2026
Published
08/13/2026
Granted
Not Available
IPC Codes(2)
G01B 7/30:for measuring angles or tapers; for testing the alignment of axes
G01D 5/20:by varying inductance, e.g. by a movable armature