Device for contactless detection of rotation angle changes, multiple revolutions, especially for steering angle sensors, has two coils spatially offset on stator for definite separation and evaluation of antenna signals for rapid rotation

摘要

The device has a permanent magnet (2) mounted on a rotor and two associated coils (4,5) on a stator (1) as antennas that are spatially offset with respect to each other so that definite separation and evaluation of the antenna signals (S1,S2) is guaranteed for rapid rotation and the signals always overlap for slow rotation. It has an evaluation circuit on a stator (3) for antenna signal evaluation.