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Multi-stage mission system priority method of BDD

Author: WangZuo
Tutor: DuSuGuo
School: Shanghai Jiaotong University
Course: Management Science and Engineering
Keywords: Multi-stage mission system Fault Tree Binary Decision Diagram Bottom event ordering
CLC: TB114.3
Type: Master's thesis
Year: 2010
Downloads: 79
Quote: 1
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Abstract


Reliability engineering stage, widely applied to the nuclear industry , aerospace , machinery, electronics and other fields, and these fields there are many highly secure system is a part of a multi-stage mission system (Phased Mission System, PMS). For multiple phases of PMS , the whole life cycle of the reliability of the study will help develop appropriate system design and maintenance programs . Fault tree analysis is the security of the system , reliability analysis is an effective method . And now all of the fault tree analysis method, the binary decision diagram (Binary Decision Diagram, BDD) is one of the most effective ways . In recent years , BDD analytical methods are increasingly being used in a multi-stage mission system reliability analysis . BDD approach is the application of a critical fault tree from the transition to the BDD to sort events of the bottom , of the selected sort order will affect the structure of the nodes of BDD . Compared with single- phase systems , multi-stage mission system reliability analysis of the dependence of the cross- stage and become more complex, the general BDD sorting methods applied directly to the system of multi-stage task analysis is difficult to obtain satisfactory BDD size the BDD. In considering the structure and characteristics of PMS on the basis of this paper, based on a common failure component adjacent the bottom and the smallest event BDD sorting method. Introduction of the concept of common component failures can not only multi-stage mission system fault tree simplification and prioritization of common failure components can also reduce duplication of BDD nodes. By the end of the event on the minimum between adjacent neighboring sort, reduce duplication of BDD nodes and increase the BDD nodes can be shared , thereby generating a smaller BDD. BDD by sorting with the general method of comparison , this new method can produce more desirable PMS BDD structure .

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CLC: > Industrial Technology > General industrial technology > Engineering and basic science > Engineering Mathematics > The application of probability theory, mathematical statistics > Reliability theory
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