Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle diagnosis or maintenance indication
Reexamination Certificate
2006-11-07
2006-11-07
Beaulieu, Y. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle diagnosis or maintenance indication
C701S033000, C701S034000, C340S438000
Reexamination Certificate
active
07133755
ABSTRACT:
A system and method for providing state of health monitoring and fault diagnostics for a vehicle stability system. The system includes at least one primary sensor and at least one secondary sensor for sensing the operation of at least one vehicle characteristic. The system calculates an estimated output of the primary sensor using at least one estimate model, and generates at least one residual as the difference between a measured output of the primary sensor and the estimated output of the estimate model. The system uses a residual pattern to determine if the primary sensor is faulty. The system compares the measured output of the primary sensor to a measured output of the secondary sensor if the residual is less than a threshold, and determines that the secondary sensor is faulty if the comparison between the measured outputs of the primary and secondary sensors is greater than a predetermined threshold.
REFERENCES:
patent: 5707117 (1998-01-01), Hu et al.
patent: 6625527 (2003-09-01), Ding et al.
patent: 6925796 (2005-08-01), Nieuwstadt et al.
Howell Mark N.
Salman Mutasim A.
Beaulieu Y.
General Motors Corporation
Marra Kathryn A.
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