DocumentCode :
2501681
Title :
Ultrahigh reliability estimates for systems exhibiting globally time-dependent failure processes
Author :
Geist, R. ; Smotherman, M. ; Brown, M.
Author_Institution :
Dept. of Comput. Sci., Clemson Univ., SC, USA
fYear :
1989
fDate :
21-23 June 1989
Firstpage :
152
Lastpage :
158
Abstract :
A long-standing conjecture, that application of the instantaneous coverage technique to the time-dependent failure rate case also provides conservative reliability estimates, is resolved negatively. In particular, two examples are provided which show that even monotonic failure rates can lead to overly optimistic estimates. An alternative extension of the instantaneous coverage technique, consistent with the constant-rate approach, is then offered. The novel approach is shown to provide conservative estimates in the time-dependent case, provided fault-handling and recovery time distributions can be described by step functions.<>
Keywords :
fault tolerant computing; system recovery; HARP reliability estimation program; attendant warning; conservative reliability estimates; fault-handling; globally time-dependent failure processes; instantaneous coverage; life critical systems; monotonic failure rates; recovery time distributions; step functions; Aerospace control; Analytical models; Computer science; Failure analysis; Independent component analysis; Life estimation; NASA; Reliability; State-space methods; Yield estimation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Fault-Tolerant Computing, 1989. FTCS-19. Digest of Papers., Nineteenth International Symposium on
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-8186-1959-7
Type :
conf
DOI :
10.1109/FTCS.1989.105559
Filename :
105559
Link To Document :
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