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基于故障模式与影响分析（FMEA）和故障树分析（FFTA）的海底控制系统可靠性分析

Reliability analysis of subsea control system using FMEA and FFTA.

作者信息

Liu Chao, Li Guangxin, Xiao Wensheng, Liu Jian, Tan Liping, Li Changjiang, Wang Teng, Yang Fengran, Xue Chengzhi

机构信息

College of Electromechanical Engineering, Qingdao University of Science & Technology, Qingdao, 266061, China.

College of Mechanical and Electrical Engineering, China University of Petroleum (East China), Qingdao, 266580, China.

出版信息

Sci Rep. 2024 Dec 2;14(1):21353. doi: 10.1038/s41598-023-42030-3.

DOI:10.1038/s41598-023-42030-3
PMID:39622920
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11612448/
Abstract

Reliability technology plays a significant role in ensuring the safe operation of the subsea control system. To perform a comprehensive analysis of the reliability of complex systems, a combination of Failure Mode and Effects Analysis (FMEA) and Fuzzy Fault Tree Approach (FFTA) is introduced. Firstly, the FMEA method is used to analyze the potential failure modes and causes of system failure by completing the qualitative analysis of system reliability from the perspective of multi-factor failure modes. And the risk matrix diagram is applied to determine the degree of harm of different failure modes to the system. Then, the system reliability is quantitatively analyzed using FFTA, and a fault tree model is established by dividing the system into "system-subsystem-component" and solving for the minimum cut set. In addition, the failure probability of the top-level event is quantitatively calculated by introducing fuzzy set theory, and the probabilistic importance of the bottom-level event is analyzed to find out the weak points of each subsystem. Finally, a qualitative and quantitative reliability analysis is conducted by using FMEA-FFTA method for subsea control system. Effective measures should be taken to focus on preventive protection and regular testing for the high risk, medium-high risk and medium risk modes for subsea control system.

摘要

可靠性技术在确保海底控制系统的安全运行方面发挥着重要作用。为了对复杂系统的可靠性进行全面分析，引入了故障模式与影响分析（FMEA）和模糊故障树方法（FFTA）相结合的方式。首先，FMEA方法用于从多因素故障模式的角度完成系统可靠性的定性分析，以分析系统潜在的故障模式和故障原因。并应用风险矩阵图来确定不同故障模式对系统的危害程度。然后，使用FFTA对系统可靠性进行定量分析，通过将系统划分为“系统 - 子系统 - 组件”并求解最小割集来建立故障树模型。此外，通过引入模糊集理论定量计算顶层事件的失效概率，并分析底层事件的概率重要度，找出各子系统的薄弱环节。最后，利用FMEA - FFTA方法对海底控制系统进行定性和定量的可靠性分析。对于海底控制系统的高风险、中高风险和中风险模式，应采取有效措施，重点进行预防性保护和定期测试。

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