Scheduled System Maintenance:
Some services will be unavailable Sunday, March 29th through Monday, March 30th. We apologize for the inconvenience.
By Topic

System Fault Diagnosis: Masking, Exposure, and Diagnosability Without Repair

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

The purchase and pricing options are temporarily unavailable. Please try again later.
2 Author(s)
Russell, J.D. ; Collins Avionics Division, Rockwell International ; Kime, C.R.

Diagnosability without fault repair of a digital system containing at most t faults is considered. A system-level diagnostic model defined in an earlier paper [1] is employed. The model is to an extent independent of the means used to implement diagnostic procedures, i.e., whether the tests are accomplished via hardware, software, or combinations thereof. Two parameters, the masking and exposure indices, are defined. Conjoined with the previously defined closure index, the parameters fundamentally characterize the capability for executing valid tests in a multiple-fault environment. Necessary and sufficient conditions for a system to be t-fault diagnosable without repair are derived in terms of these parameters. Examples are presented to illustrate the application of the model for systems close to those encountered in actual practice.

Published in:

Computers, IEEE Transactions on  (Volume:C-24 ,  Issue: 12 )