Failure diagnosis apparatus and a method thereof

Details Failure diagnosis apparatus and a method thereof Failure diagnosis apparatus and a method thereof

1994-10-13

1996-08-20

Canney, Vincent P.

Excavating

371 28, 39518306, G06F 1100

Patent

active

055485979

ABSTRACT:
A failure diagnosis apparatus for a control system at which plural sensors are provided, comprises a means for extracting correlations among output signals from the predetermined groups of the sensors based on the output signals in the normal operations of the control system by such a means as a quantization method of quantizing a signal space, a means for making up an abnormal degree of the output signals from each predetermined group of the sensors by comparing output signals to be examined from each predetermined group of the sensors and the correlation corresponding to the group of the sensors, and a means for estimating the reliability of each sensor by using the abnormal degrees and for identifying the sensor outputting an abnormal signal.

REFERENCES:
patent: 5148378 (1990-11-01), Shibayama

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