Vorrichtung und Verfahren zur berührungslosen Erfassung eines Drehwinkels bzw. einer Torsionsverdrehung

摘要

The invention relates to a measuring device and to a method for the contactless measurement of an angle of rotation or a torsion angle. The measuring device comprises a first resonator (2) and a second resonator (4). The two resonators (2, 4) have a substantially circular periphery on which at least one projection and/or one recess are disposed. The two resonators (2, 4) are arranged in a coplanar relation to each other that allows their rotation with respect to each other. An exciter (6) excites the resonators and a receiver (6) measures the back-scattered signals. An alteration of the resonance frequency which occurs when the two resonators (2, 4) are rotated relative to each other is used as a measure for detecting the angle of rotation.