METHOD AND ASSEMBLY FOR DETERMINING THE POSITION OF A MAGNETIC BODY BY MEANS OF MAGNETIC FIELD SENSORS

摘要

The invention relates to a method and to an assembly for determining the position of a magnetic body (3) by means of one or more magnetic field sensors (2), which magnetic body moves in relation to the one or more magnetic field sensors (2). In the method, one or more of three direction components of the magnetic flux density of the magnetic field produced by the magnetic body (3) are locally sensed repeatedly by means of the magnetic field sensors (2) and evaluated in order to determine the particular position of the magnetic body (3). The magnetic field sensors (2) are arranged in the near field of the magnetic body (3). The evaluation occurs at least partially by means of an optimal estimator on the basis of a magnetic field model. By means of the method and the associated assembly, up to six mechanical degrees of freedom of the magnetic body can be determined in a very small space.