Electric power steering system having failure detection apparatus
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United States of America Patent
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Dec 26, 2006
Issued Date -
N/A
app pub date -
Dec 23, 2004
filing date -
Feb 3, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
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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Family
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