Electric power steering system having failure detection...

Details Electric power steering system having failure detection... Electric power steering system having failure detection...

2006-12-26

2006-12-26

Pham, Toan N. (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S517000, C340S664000, C180S402000, C318S432000, C318S254100

Reexamination Certificate

active

07154404

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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