Diagnostic system and method for an electric power steering system
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United States of America Patent
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Aug 11, 2015
Grant Date -
May 24, 2012
app pub date -
Jul 28, 2011
filing date -
Nov 23, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A diagnostic system and method for an electric power steering system are provided. The diagnostic system includes a first microprocessor that determines a first relative position value indicating the relative rotational position of the rotatable shaft at the first time based on the signals from first and second position sensors. A second microprocessor determines a second relative position value indicating the relative rotational position of the rotatable shaft at the first time based on the signals from third and fourth position sensors. The first microprocessor determines whether the first relative position value is an acceptable value based on a difference between the first relative position value and the second relative position value.
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