Patent ID: 8754600

Claim:
A method for identifying a reversing operation in an electric actuating unit of a vehicle, the method comprising: moving the electric actuating unit in a closing direction with an electromotive drive, changing a value of a position counter as a function of output signals from a sensor system including a single Hall sensor, which interacts with a sensor wheel secured to a rotor shaft of the electromotive drive and having equidistant coding sectors, verifying whether trapping is occurring, if trapping is detected, switching the direction of rotation of the electromotive drive, and responsive to switching the direction of rotation of the electromagnetic drive, writing successive pulse interval count values determined from the output signals of the sensor system or data derived therefrom, the pulse interval count values representing an actual data pattern related to actual reversal of the direction of rotation of the electromagnetic drive, into a ring buffer, comparing the pulse interval count values written into the ring buffer or the data derived therefrom with predefined reference data patterns which are characteristic for different reversal situations and stored in a reference data storage, identifying a correspondence of the pulse interval count values or the data derived therefrom written into the ring buffer to one of the predefined reference impulse or data patterns stored in the reference data storage; and correcting the position counter as a function of the identified corresponding predefined reference data pattern in order to correct for a deviation of the position counter due to a mechanical inertia of the electric actuating unit.