Patent ID: 8188728
Filing Date: 2012-05-29
Classification: G01B

Abstract:
1. A method for determining a relative position of two elements that are mobile with respect to one another, the method comprising applying a field source to a first of the two elements and a meter to a second of the two elements for supplying, according to a measurement of a field of forces from the field source, a response identifying the relative position of the first element with respect to the second element; wherein measuring the field of forces is executed by using at least three sensors (s 1 , s 2 , s 3 ) arranged in respective distinct points (P 1 , P 2 , P 3 ) of the second element that supply respective outputs (x 1 , x 2 , x 3 ) representing values of the field of forces at the points (P 1 , P 2 , P 3 ); wherein the method includes computing, for each sensor (s 1 , s 2 , s 3 ), a respective iso-output surface formed by a locus of the points that, if occupied by the source, would result in the sensor (s 1 ; s 2 ; s 3 ) issuing a same output (x 1 , x 2 , x 3 ).