Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Atsushi Sato0
Date of Patent
December 26, 2006
0Patent Application Number
110192840
Date Filed
December 23, 2004
0Patent Primary Examiner
Patent abstract
An electric power steering system comprises a three-phase brushless DC motor, a steering torque detector, a resolver for detecting a resolver rotation angle of the three-phase brushless DC motor, a processing unit and a failure detection apparatus. The processing unit supplies a motor rotation angle and a rotational direction command value to the failure detection apparatus. The failure detection apparatus determines whether the processing unit is normal based on the motor rotation angle and the rotational direction command value.
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