EXTENDED BLOCK REPLACEMENT POLICY OF A SYSTEM SUBJECT TO SHOCKS

Authors
Citation
Sh. Sheu, EXTENDED BLOCK REPLACEMENT POLICY OF A SYSTEM SUBJECT TO SHOCKS, IEEE transactions on reliability, 46(3), 1997, pp. 375-382
Citations number
38
Categorie Soggetti
Computer Sciences","Engineering, Eletrical & Electronic","Computer Science Hardware & Architecture","Computer Science Software Graphycs Programming
ISSN journal
00189529
Volume
46
Issue
3
Year of publication
1997
Pages
375 - 382
Database
ISI
SICI code
0018-9529(1997)46:3<375:EBRPOA>2.0.ZU;2-F
Abstract
A generalization of the block replacement (BR) policy is proposed & an alyzed for a system subject to shocks, Under such a policy, an operati ng system is preventively replaced by new ones at times i . T (i = 1,2 ,3,...) independently of its failure history, If the system fails in: ((i-1) . T, (i-1) . T + T-0), it is either replaced by a new one or mi nimally repaired, [(i-1) . T + T-0, i . T), it is either minimally rep aired or remains inactive until the next planned replacement. The choi ce of these two actions is based on some mechanism (modeled as random) which depends on the number of shocks since the latest replacement, T he average cost rate is obtained using the results of renewal reward t heory, The model with two variables is transformed into a model with o ne variable and the optimum policy is discussed, Various special cases are considered. The results extend many of the well-known results for BR policies.