METHOD AND DEVICE FOR DETERMINING THE ABSOLUTE POSITION OF A COMPONENT OF AN ACTUATOR ROTATING ABOUT A ROTATIONAL AXIS, IN PARTICULAR A CLUTCH ACTUATOR

摘要

The invention relates to a method for determining the absolute position of a component of an actuator rotating about a rotational axis, in particular a clutch actuator, wherein a co-rotating magnetic element (18) is arranged on the component (14), and the absolute position of the magnetic element (18) is detected by means of a multi-turn sensor (16) located opposite the magnetic element (18), which multi-turn sensor sensor (16) is supplied with a voltage. In a method in which a particularly robust and simple multi-turn sensor can be used, a Wiegand wire unit (19) monitors movement of a magnetic assembly (18, 22) of the rotating component (14) and generates energy when movement is detected from the magnetic field of the magnetic assembly (18, 22) of the rotating component (14) and converts this into electrical voltage, which is provided to supply the multi-turn sensor (16) with voltage.