Method and device for determining a position of an actuating element

A positioning system, comprising:

• an actuating drive (5) for driving an actuating element (3);
• an acceleration sensor (7), coupled to the actuating drive (5), for providing a sensor signal, wherein the acceleration sensor (7) is mounted on an electric-motor actuating drive (5) of the positioning system (1) in order to detect an acceleration based on a force excitation by (a) a detent torque, (b) an imbalance of a rotor of the electric-motor actuating drive, or a combination of both (a) and (b);
• and
• a control unit (6) configured to
• receive a signal profile of a sensor signal of an acceleration sensor (7) mounted on an electric-motor actuating drive (5) of the positioning system (1) to detect an acceleration based on a force excitation by (a) a detent torque, (b) an imbalance of a rotor of the electric-motor actuating drive, or a combination of both (a) and (b);
• evaluate the signal profile to detect a completed oscillation;
• and
• determine the position of the actuating element based on the detecting of the completed oscillation.