Method of fault diagnosis in an apparatus having sensors

Details Method of fault diagnosis in an apparatus having sensors Method of fault diagnosis in an apparatus having sensors

1992-10-23

1995-05-09

Zanelli, Michael

Boots, shoes, and leggings

395905, 36442403, 371 151, G06F 1520

Patent

active

054146453

ABSTRACT:
The relationships between part nodes, including all sensor nodes in an apparatus system are expressed by connecting relations and weighing factors indicating the correlation. Output signals of all the sensor nodes in the system are converted to a state quantity by a membership function using fuzzy reasoning. With a sensor as a starting point, the nodes which are sequentially connected are traced and state quantities of each node are determined. The state quantities of each node are unified in a subsystem comprising this apparatus system and the subsystem in which the value of the state quantity is large is inferred to be faulty.

REFERENCES:
patent: 5041976 (1991-08-01), Marko et al.
patent: 5079759 (1992-01-01), Kajiyama
Empirical and Functional Knowledge in an Expert System for Fault Diagnosis; G. Armano et al; IEEE; Dec. 31, 1988; pp. 109-114.

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