Reliability of demand-based phased-mission systems subject to fault level coverage

In many real-world applications, a mission may consist of several different tasks or phases that have to be accomplished in sequence. Such systems are referred to as phased-mission systems (PMS). In this paper we consider the demand-based PMS with parallel structure, where the system components func...

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Vydané v:Reliability engineering & system safety Ročník 121; s. 18 - 25
Hlavní autori: Peng, Rui, Zhai, Qingqing, Xing, Liudong, Yang, Jun
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Oxford Elsevier Ltd 01.01.2014
Elsevier
Predmet:
Algorithmics. Computability. Computer arithmetics
Algorithms
Applied sciences
Computer science; control theory; systems
Construction
Decision theory. Utility theory
Exact sciences and technology
Fault level coverage
Faults
Mission demand
Missions
Multi-valued decision diagram
Operational research and scientific management
Operational research. Management science
Phased-mission system
Phases
Reliability engineering
Reliability evaluation
Reliability theory. Replacement problems
Risk theory. Actuarial science
Safety
Tasks
Theoretical computing
Multi-valued decision diagram
Reliability evaluation
Phased-mission system
Fault level coverage
Mission demand
Branching
Dependability
Multivalued logic
Coverage
Distributed system
Decision tree
Truncation
Multiphase system
Fault tolerance
Multi-valued decision diagrams
Reduction method
Parallel system
Reliability
ISSN:0951-8320, 1879-0836
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Popis
Shrnutí:In many real-world applications, a mission may consist of several different tasks or phases that have to be accomplished in sequence. Such systems are referred to as phased-mission systems (PMS). In this paper we consider the demand-based PMS with parallel structure, where the system components function in parallel with different capacities in each phase of the mission and the mission is successful if and only if the total system capacity meets the predetermined mission demand in each phase. The reliability of the demand-based PMS (DB-PMS) with parallel structure subject to fault-level coverage (FLC) is first studied using a multi-valued decision diagram (MDD) based technique. The traditional MDD is modified to accommodate the FLC mechanism and new MDD construction and evaluation procedures are proposed for DB-PMS. To reduce the size of the MDD, an alternative construction procedure applying the branching truncation method and new reduction rules are further proposed. An upwards algorithm is put forward to evaluate the reliability of DB-PMS subject to FLC. The proposed approaches are illustrated through examples. •Reliability of phased-mission systems subjected to fault level coverage is studied.•System demand and component stress change from phase to phase.•A combinatorial method based on multi-valued decision diagrams is proposed.
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ISSN:0951-8320
1879-0836
DOI:10.1016/j.ress.2013.07.013