本文關(guān)鍵詞： 安全性指標(biāo)分配 Petri Net故障模型 Petri Net方法 故障嚴(yán)酷等級　出處：《國防科技大學(xué)學(xué)報》2015年06期 　論文類型：期刊論文

【摘要】：為解決動態(tài)故障樹抽象而不利于交流的問題,利用Petri Net直觀、易用且適用范圍廣的優(yōu)點(diǎn),提出基于Petri Net的飛機(jī)系統(tǒng)安全性指標(biāo)分配方法。通過整理安全性指標(biāo)及其相關(guān)的可靠性指標(biāo),選取失效率作為安全性指標(biāo),對比動態(tài)故障樹及Petri Net建模方法,選取后者建立靜態(tài)邏輯變遷和動態(tài)邏輯變遷的Petri Net指標(biāo)分配模型。在此基礎(chǔ)上,提出考慮嚴(yán)酷等級的系統(tǒng)安全性指標(biāo)分配方法,經(jīng)過算例分析,構(gòu)建Petri Net層次系統(tǒng)故障模型進(jìn)行指標(biāo)分配。結(jié)果表明,分配值均在相應(yīng)安全性指標(biāo)內(nèi),該方法能夠克服動態(tài)故障樹法不直觀、等分配法分配過于粗糙等缺陷,為飛機(jī)安全性設(shè)計(jì)與評估提供參考。
[Abstract]:In order to solve the problem that dynamic fault tree is abstract and unfavorable to communication, the advantages of Petri Net are intuitionistic, easy to use and wide range of application. This paper presents a method of aircraft system safety index allocation based on Petri Net. By sorting out the safety index and its related reliability index, the failure rate is selected as the safety index, and the dynamic fault tree and Petri Net modeling method are compared. The latter is selected to establish the Petri Net index allocation model of static logic transition and dynamic logic transition. On this basis, a system security index allocation method considering the severity of the system is proposed. The Petri Net hierarchical system fault model is constructed for index allocation. The results show that the allocation values are all within the corresponding safety index, and the method can overcome the shortcomings of dynamic fault tree method which is not intuitionistic and the equal allocation method is too rough. It provides reference for aircraft safety design and evaluation.
【作者單位】： 空軍工程大學(xué)裝備管理與安全工程學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(71171199)
【分類號】：V267;V328
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本文編號：1525298