基于模糊貝葉斯網(wǎng)絡(luò)的汽車軟關(guān)系統(tǒng)可靠性研究方法和優(yōu)化
發(fā)布時間:2018-10-25 06:42
【摘要】:為解決傳統(tǒng)方法在狀態(tài)多樣化的復(fù)雜系統(tǒng)可靠性分析中的局限性,通過貝葉斯網(wǎng)絡(luò)的推理功能得到系統(tǒng)故障概率與可靠度評估、后驗概率及根節(jié)點重要度的計算和分析的方法,充分利用了貝葉斯網(wǎng)絡(luò)不確定性推理和圖形化表達的優(yōu)勢.文章以汽車軟關(guān)系統(tǒng)為研究對象,在系統(tǒng)可靠性框圖模型的基礎(chǔ)上,應(yīng)用新方法計算了各根節(jié)點失效概率和重要度并進行了排序,針對系統(tǒng)的薄弱環(huán)節(jié),提出了相應(yīng)的改進方案,為系統(tǒng)的產(chǎn)品和類似系統(tǒng)的可靠性研究提供了理論參考,具有較強的工程實用價值.
[Abstract]:In order to solve the limitation of traditional methods in the reliability analysis of complex systems with diversified states, the methods of system fault probability and reliability evaluation, posteriori probability and root node importance calculation and analysis are obtained through the reasoning function of Bayesian network. The advantages of uncertain reasoning and graphical representation of Bayesian networks are fully utilized. Based on the system reliability block diagram model, the failure probability and importance degree of each root node are calculated and sorted by a new method, aiming at the weak links of the system. The corresponding improvement scheme is put forward, which provides a theoretical reference for the study of the reliability of the system products and similar systems, and has a strong practical value in engineering.
【作者單位】: 上海大學(xué)機電工程及其自動化學(xué)院;
【分類號】:TP18;U463.854
本文編號:2292933
[Abstract]:In order to solve the limitation of traditional methods in the reliability analysis of complex systems with diversified states, the methods of system fault probability and reliability evaluation, posteriori probability and root node importance calculation and analysis are obtained through the reasoning function of Bayesian network. The advantages of uncertain reasoning and graphical representation of Bayesian networks are fully utilized. Based on the system reliability block diagram model, the failure probability and importance degree of each root node are calculated and sorted by a new method, aiming at the weak links of the system. The corresponding improvement scheme is put forward, which provides a theoretical reference for the study of the reliability of the system products and similar systems, and has a strong practical value in engineering.
【作者單位】: 上海大學(xué)機電工程及其自動化學(xué)院;
【分類號】:TP18;U463.854
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