Patent ID: 11879755
Assignee: CONTINENTAL AUTOMOTIVE GMBH
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for determining the position of a rotary element of a motor vehicle based on a position sensor configured to measure the position of the rotary element, to simultaneously generate a sine-type output signal and a cosine-type output signal reflecting an angular position of said rotary element as it rotates and to deliver these output signals to a control module of the vehicle, said method, implemented by said control module, comprising:
rotating the rotary element;
receiving the sine-type output signals and the cosine-type output signals generated by the position sensor as the rotary element rotates;
determining an average period of the sine-type output signals and the cosine-type output signals received within a predetermined time range;
correcting both received sine-type output signals and cosine-type output signals by at least one of correcting an amplitude, an offset, and an orthogonality of the respective output signals, such that a period of each of the signals is equal to the determined average period; and
determining the angular position of the rotary element based on the corrected sine-type output signals and cosine-type output signals,
wherein prior to determining the average period of the received output signals, determining an acceleration of the rotation of the rotary element by calculating a difference in rotational speed of the rotary element between two consecutive revolutions, determining the average period of and correcting the received output signals, and determining the angular position of the rotary element are implemented only when the acceleration value is lower than a predetermined acceleration threshold characterizing a steady state.