Int J Performability Eng ›› 2019, Vol. 15 ›› Issue (8): 2062-2070.doi: 10.23940/ijpe.19.08.p5.20622070

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Reliability Analysis of Cold Standby Systems based on Supplement Events using Multiple-Valued Decision Diagrams

Ting Zeng*   

  1. Periodicals Press of Jianghan University, Jianghan University, Wuhan, 430056, China
  • Received:2019-05-27 Online:2019-08-20 Published:2019-09-10
  • Contact: * E-mail address: flora198234@jhun.edu.cn

Abstract: Multiple-valued decision diagrams (MDDs) have been widely used in reliability analysis for non-repairable fault-tolerant systems. Typically, multiple-valued decision diagrams are used to analyze the static fault tree (SFT) model since basic events in the SFT are non-sequence-dependent. However, a cold standby system belongs to the dynamic fault tree model; the traditional MDD cannot be directly applied in this system. Hence, a novel analytical method based on conditional events using multiple-valued decision diagrams for combinatorial reliability analysis of non-repairable cold standby systems is proposed. In the proposed method, a set of fault events with specific supplement events replaces cut sequences for qualitative analysis. The sets are converted to algebraic structure-based models for quantitative analysis. Additionally, the system MDD model and reliability evaluation expression can be reused for reliability analysis with different component failure parameters.

Key words: reliability, fault tree analysis (FTA), multiple-valued decision diagram (MDD)