| 摘要 |
The invention relates to a drive system (1) of an actuator (10) of a motor vehicle and to a method for controlling the drive system (1), wherein an electric motor (3) drives a drive element (21) by means of a gearbox (17, 18) and an output element (22) coupled to same by means of a rotary spring (23) about a common rotary axis (20). The rotary spring (23) transfers a torque acting on the drive element (21) to the output element (22) in both directions of rotation (R1, R2) and blocks a torque on the output side. Control electronics (25) are set up for saving a current position value of the actuator (10) using the motor speed (n) and/or the motor current (IM) and the direction of rotation (R1, R2) when the drive element (21) driven in one of the directions of rotation (R1,R2) is stopped after an adjusting motion. When the actuator (10) again makes an adjusting motion in the same or opposite direction, an exaggeration of the motor speed (n) or an increase in the motor current (IM) are captured until or at the moment of a non-positive coupling of the drive element (21) to the output element (22) by means of the rotary spring (23), and a correction value is determined for compensating for a shift in position of the drive element (21) relative to the saved position value. |
