Angular position sensor

An angular position sensor for sensing the angular position of a rotor rotating on an axis relative to a stator, comprising:

• a ferromagnetic target, of substantially ovoid cross section, rotating together with one from among the rotor or the stator;
• and
• a sensitive element comprising a first set of coils that are angularly evenly distributed, rotating together with the other from among the rotor or the stator, the coils being arranged in line with the target in order to be able to measure a distance from the target so as to deduce therefrom an angular position of the rotor relative to the stator, wherein
• a cardinality of the first set or of the second set, is equal to 4, and the coils of the first set or the coils of the second set, respectively, are connected in a Wheatstone bridge,
• said sensor also comprises a resonator, designed to achieve self-excitation through resonance of the coils, comprising a first capacitor arranged between the two second diagonal points used for excitation of a set, and a second capacitor arranged between the first two diagonal points used for measurements of the signals to produce an angular position,
• each set has a resonant frequency, and
• an excitation signal applied to a Wheatstone bridge has a frequency equal to said resonant frequency.