CPC H03M 13/31 (2013.01) [G01D 5/24471 (2013.01); G01D 5/24495 (2013.01); G11B 20/1833 (2013.01); G01D 5/2451 (2013.01)] | 21 Claims |
1. A method for signal error correction of a position signal relating to a relative position of at least one sensor with respect to a position reference, comprising:
determining a set of parameter values of a parameterized approximation of a corrected relative position with respect to time based on measurements of the position signal over a duration of at least one period of a periodic signal error of the position signal;
estimating a first corrected relative position at a first time based on the parameterized approximation using the determined set of parameter values and the first time, the estimating including forming a weighted average of a set of previous speeds relating to a change of the relative position of the at least one sensor with respect to the position reference and a current speed relating to a change of the relative position of the at least one sensor with respect to the position reference; and
outputting a compensated signal related to the first corrected relative position.
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