Title :
Using functional maintenance to improve fault tolerance
Author :
Umeda, Yohtaro ; Tomiyama, Tetsuo ; Yoshikawa, Hiroyuki ; Shimomura, Yoshiki
Author_Institution :
Tokyo Univ., Japan
fDate :
6/1/1994 12:00:00 AM
Abstract :
A machine can be made self-maintaining by taking advantage of functionally similar components when faults occur. The performance of the machine might degrade, but the required functions will continue. A self-maintenance machine should: constantly monitor its state; judge normal or faulty status using monitor data; diagnose even unknown faults by itself; generate a repair plan (based on the diagnostic results) that would enable the machine to perform at least some of the required functions; and execute the repair plan.<>
Keywords :
engineering computing; maintenance engineering; model-based reasoning; planning (artificial intelligence); real-time systems; redundancy; reliability; Functional Redundancy Designer; fault diagnosis; fault tolerance; faulty status judgement; functional maintenance; functionally similar components; model-based reasoner; performance degradation; repair plan generation; self-maintenance machine; state monitoring; unknown faults; Aircraft; Condition monitoring; Control systems; Degradation; Design engineering; Fault tolerance; Fault tolerant systems; Maintenance; Prototypes; Redundancy;
Journal_Title :
IEEE Expert
