Adjustment of a magneto-resistive angle sensor
First Claim
1. An angle sensor comprising:
- two bridge circuits at which a pair of voltage values (U1, U2) is measurable during an angle measurement, which pair of voltage values is used together with at least one correction value for the computation of an angle, and an analysis circuit for computing the at least one correction value from several of the pairs of voltage values (U1, U2), which pairs of voltage values lie on the periphery of a circle or an ellipse when respectively plotted against each other, and which at least one correction value is derived from a center point computation of the circle or the ellipse, wherein the pairs of voltage values (U1, U2) used for the computation of the correction value lie in a mechanical angle range of 10°
on the periphery of the circle or ellipse; and
wherein a corrective adjustment to the angle sensor by the correction value occurs during said angle measurement by said angle sensor.
4 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to an angle sensor and a method for adjustment of an angle sensor.
The angle sensor has two bridge circuits (1, 2), at which a pair of voltage values (U1, U2) is measurable during an angle measurement. The pair of voltage values are used together with at least one correction value for the computation of an angle.
The angle sensor also has an analysis circuit that is provided for the computation of the correction value from several of the pairs of voltage values (U1, U2). The pairs of voltage values lie on the periphery of a circle or an ellipse when respectively plotted against each other, and the correction value is derived from a center point computation of the circle of the ellipse.
22 Citations
5 Claims
-
1. An angle sensor comprising:
-
two bridge circuits at which a pair of voltage values (U1, U2) is measurable during an angle measurement, which pair of voltage values is used together with at least one correction value for the computation of an angle, and an analysis circuit for computing the at least one correction value from several of the pairs of voltage values (U1, U2), which pairs of voltage values lie on the periphery of a circle or an ellipse when respectively plotted against each other, and which at least one correction value is derived from a center point computation of the circle or the ellipse, wherein the pairs of voltage values (U1, U2) used for the computation of the correction value lie in a mechanical angle range of 10°
on the periphery of the circle or ellipse; and
wherein a corrective adjustment to the angle sensor by the correction value occurs during said angle measurement by said angle sensor. - View Dependent Claims (2, 3, 4)
-
-
5. A method of adjusting an angle sensor, comprising the steps of:
-
measuring a pair of voltage values (U1, U2) at two bridge circuits during an angle measurement; and
computing an angle using the pair of voltage values and at least one correction value, determining the correction value from several of the pairs of voltage values (U1, U2), which values lie on the periphery of a circle or an ellipse when respectively plotted against each other, using a center-point computation of the circle or tie ellipse, wherein the pairs of voltage values (U1, U2) used for the computation of the correction value lie in a mechanics angle range of 10°
on the periphery of the circle or ellipse; and
including the step of making a corrective adjustment to the angle sensor by the correction value during said angle measurement by said angle sensor.
-
Specification