本文選題：多階段系統(tǒng) + 多狀態(tài)系統(tǒng)��； 參考：《電子科技大學(xué)》2011年碩士論文

【摘要】：在航天、核能、通信、交通運(yùn)輸、網(wǎng)絡(luò)等領(lǐng)域越來越多的系統(tǒng)呈現(xiàn)出多階段任務(wù)的特征,例如同步通信衛(wèi)星發(fā)射過程包括火箭發(fā)射,星箭分離,衛(wèi)星起旋,遠(yuǎn)地發(fā)動機(jī)點(diǎn)火,入軌,定點(diǎn)等階段。這類系統(tǒng)需要在連續(xù)的階段執(zhí)行不同任務(wù),可能經(jīng)歷不同的工作環(huán)境,因此系統(tǒng)配置、元件的失效行為、任務(wù)成功的標(biāo)準(zhǔn)在各階段都可能不同。相較于單一階段任務(wù)的系統(tǒng),在計算多階段任務(wù)系統(tǒng)的可靠性時,不僅需要對各階段進(jìn)行單獨(dú)的分析,而且充分需要考慮跨階段依賴性以計算整個系統(tǒng)的可靠性。 多階段任務(wù)系統(tǒng)可以分為不可維修系統(tǒng)和可維修系統(tǒng)。本文在已有文獻(xiàn)的成果之上就兩類系統(tǒng)的建模和可靠性計算方法分別進(jìn)行討論。首先介紹了不可維修的系統(tǒng)可靠性分析方法。以完成一次飛行過程的飛機(jī)為分析對象,將現(xiàn)有的不可維修的多階段任務(wù)系統(tǒng)分析方法應(yīng)用到飛機(jī)的可靠性分析中。 對于可維修的多階段任務(wù)系統(tǒng),本文采用二值決策圖和馬爾科夫過程相結(jié)合的方法來分析系統(tǒng)的可靠性。避免了已有文獻(xiàn)采用馬爾科夫過程的進(jìn)行全局建模方法在建立復(fù)雜系統(tǒng)模型時存在狀態(tài)爆炸的問題,減輕了系統(tǒng)分析的復(fù)雜性, 最后研究了可維修的多狀態(tài)多階段任務(wù)系統(tǒng)的分析方法,引入多值決策圖法分析多狀態(tài)多階段任務(wù)系統(tǒng)并詳細(xì)介紹了生成過程,提出一種運(yùn)用馬爾科夫過程計算系統(tǒng)可靠性的方法
[Abstract]:A growing number of systems in the fields of space, nuclear energy, communications, transportation, and networks are characterized by multistage missions. For example, synchronous communication satellite launch processes include rocket launch, rocket separation, satellite rotation, remote engine ignition, Step into orbit, fixed point, etc. This kind of system needs to perform different tasks in successive stages, and may experience different working environment. Therefore, the system configuration, the failure behavior of components, and the criteria for mission success may vary from stage to stage. Compared with single-phase task systems, in computing the reliability of multi-stage task systems, not only individual analysis of each phase is needed, but also cross-phase dependencies should be fully considered in order to calculate the reliability of the whole system. Multi-stage mission system can be divided into non-maintainable system and maintainable system. In this paper, the methods of modeling and reliability calculation of two kinds of systems are discussed based on the results of previous literatures. Firstly, the system reliability analysis method which can not be maintainable is introduced. The existing multistage mission system analysis method which can not be maintainable is applied to the reliability analysis of the aircraft. For the maintainable multistage task system, the reliability of the system is analyzed by combining the binary decision graph and Markov process. The problem of state explosion in the global modeling method of Markov process is avoided, and the complexity of system analysis is reduced. Finally, the analysis method of the maintainable multi-state multi-stage task system is studied, and the method of multi-value decision graph is introduced to analyze the multi-state multi-stage task system and the generating process is introduced in detail. A method of calculating system Reliability by Markov process
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TH186

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本文編號：1851427