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Abstract

A method for operating a capacitive position sensor includes providing excitation signals driving each conductive element. The excitation signals are periodic in 2π, with each set of conductive elements being provided with n different excitation signals. The different excitation signals differ in phase, wherein in a functionality check mode, the excitation signal that in a measurement mode is applied to one of the conductive elements in the functionality check mode is applied to a different one of the conductive elements. The different conductive element is the k-th conductive element counted from the one of the conductive elements, with k being an integer of 1 to n−1 and this shift of excitation signals is applied to all conductive elements. The capacitive position sensor includes a stator having a transmitter with N sets of conductive elements, each set having n conductive elements formed in a linear or circular arrangement thereon.

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First Claim