Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Bertrand Legrand0
Date of Patent
September 4, 2007
0Patent Application Number
113493360
Date Filed
February 8, 2006
0Patent Primary Examiner
Patent abstract
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 Ii and a magnetic polarisation value Mi whereas each magnetic pole of opposite sign has a width Ii+1 different from width Ii and a magnetic polarisation value Mi+1, characterized in that the polarization of the magnetic poles is such that Mi×Ii=Mi+1×Ii+1.
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