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Mission Reliability Assessment of Space TT&C System by Discrete Event System Simulation
Author(s) -
Yang Xiaosong,
Wu Xiaoyue
Publication year - 2014
Publication title -
quality and reliability engineering international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 62
eISSN - 1099-1638
pISSN - 0748-8017
DOI - 10.1002/qre.1546
Subject(s) - fault tree analysis , reliability (semiconductor) , reliability engineering , computer science , state space , discrete event simulation , event (particle physics) , reliability block diagram , process (computing) , fault (geology) , function (biology) , real time computing , simulation , engineering , programming language , power (physics) , statistics , physics , mathematics , quantum mechanics , evolutionary biology , seismology , biology , geology
Based on the analysis of system characteristics and mission process, space tracking, telemetry and command (TT&C) system can be viewed as a phased‐mission system (PMS). A general methodology using discrete event system simulation is proposed to quantitatively assess mission reliability of space TT&C system, because the traditional method is difficult to solve such complex problem. By dividing the time sequence of TT&C mission profile into several phases, the fault tree model of PMS is built to represent the system logical structure in each phase. In order to efficiently build simulation models, unified modeling language static class diagram is used to describe simulation model architecture. Extensible markup language is adopted to represent the mission reliability model in standard format for simulation input. By randomly generating the failure and repair events of the system components, the changes of the system state are simulated. The logic structure function of fault tree and observation data of the system state change jointly determines the mission reliability. A case study is given to illustrate the approach and validate its effectiveness. Copyright © 2013 John Wiley & Sons, Ltd.