Method for determining two pseudo-sinusoidal signals in quadrature
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United States of America Patent
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Sep 14, 2010
Grant Date -
Jan 31, 2008
app pub date -
Jul 20, 2007
filing date -
Jul 27, 2006
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Abstract
A method for determining two pseudo-sinusoidal signals in quadrature from a pseudo-sinusoidal signal transmitted by an encoder is provided. The method using a sensor arranged within reading distance of the encoder, which sensor includes at least four sensing elements which are linearly equally distributed. The sensing elements are each capable of delivering a signal S.sub.i representative of the signal transmitted by the encoder. The method measuring the signals S.sub.i and combining the signals S.sub.i in order to form the signals U=(S.sub.1-S.sub.2)-(S.sub.3-S.sub.4) and V=(S.sub.2-S.sub.3), which signals U and V are in quadrature. A system for determining by implementing such a method, as well as a bearing including such a determination system, are provided.
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