摘要 |
The object of the invention relates to an encoder for a rotary position sensor, including a multipolar magnetic ring driven into rotation around its axis, and provided at its circumference with magnetic poles of a given sign, alternately positioned with magnetic poles of an opposite sign, so as to form at least one series of pairs of magnetic poles with a determined period, each magnetic pole of a given sign having a width I<SUB>i </SUB>and a magnetic polarisation value M<SUB>i </SUB>whereas each magnetic pole of opposite sign has a width I<SUB>i+1 </SUB>different from width I<SUB>i </SUB>and a magnetic polarisation value M<SUB>i+1</SUB>, characterized in that the polarization of the magnetic poles is such that M<SUB>i</SUB>xI<SUB>i</SUB>=M<SUB>i+1</SUB>xI<SUB>+1</SUB>.
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