Failure detection system for electric power steering system

Details Failure detection system for electric power steering system Failure detection system for electric power steering system

2006-02-07

2006-02-07

Benson, Walter (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

For fault location

C318S293000

Reexamination Certificate

active

06995567

ABSTRACT:
The invention relates to a failure detection system for an electric power steering system. The system detects ON failure of one of first to fourth switching elements of an H-bridge circuit of the electric power steering system. The system detects ON failure by measuring the value of the current and the fluctuation in the value of the current. Therefore, the system can detect ON failures even when the value of the current is within normal ranges.

REFERENCES:
patent: 5303156 (1994-04-01), Matsuoka et al.
patent: 6439336 (2002-08-01), Noro et al.
patent: 2000-190861 (2000-07-01), None

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