An integrated method of extended STPA and BN for safety assessment of man-machine phased-mission system

IF 9.4 1区工程技术 Q1 ENGINEERING, INDUSTRIAL

Reliability Engineering & System Safety Pub Date : 2024-10-11 DOI:10.1016/j.ress.2024.110569

Xin Lu , Shengkui Zeng , Jianbin Guo , Wei Deng , Mingjun He , Haiyang Che

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引用次数: 0

Abstract

Man-Machine Phased-Mission System (MMPMS) usually demands the cooperation of operators with different responsibilities and machines to accomplish multi-phase missions. Its machine configuration and human organization structure may change across phases, and phase dependencies of machine failures and human errors may exist. In current studies, the safety of man-machine system is usually analyzed qualitatively by System Theoretic Process Analysis (STPA) and assessed quantitatively by the integration of STPA with Bayesian Networks (BN). These studies only focus on single-phase systems and conduct single-phase BN while cannot address the features of MMPMS. In this paper, a qualitative analysis and quantitative assessment method for phase dependencies is proposed and integrated into the method that combines STPA and BN. Firstly, four types of phase dependencies in MMPMS are identified. Secondly, new mapping rules for phase dependencies are proposed to integrate single-phase BN into a multi-phase BN. Thirdly, the quantitative assessment method for phase dependencies considering the effects of human organization structure changes are proposed to quantify the parameters of multi-phase BN. Fourthly, the safety of MMPMS can be assessed through multi-phase BN. Finally, an Unmanned Aerial Vehicle system with three-phase missions is presented as a case study to demonstrate the effectiveness of the proposed method.

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用于人机相控任务系统安全评估的扩展 STPA 和 BN 综合方法

人机分阶段任务系统（MMPMS）通常要求不同职责的操作员与机器合作完成多阶段任务。其机器配置和人员组织结构可能在不同阶段发生变化，机器故障和人为错误可能存在阶段依赖性。目前的研究通常通过系统理论过程分析法（STPA）对人机系统的安全性进行定性分析，并通过系统理论过程分析法与贝叶斯网络（BN）的结合对人机系统的安全性进行定量评估。这些研究仅关注单相系统，并进行单相贝叶斯网络，而无法解决人机管理系统的特点。本文提出了相依性的定性分析和定量评估方法，并将 STPA 和 BN 结合在一起。首先，确定了 MMPMS 中的四种相位依赖关系。其次，提出了新的相依性映射规则，将单相 BN 整合到多相 BN 中。第三，提出了考虑人体组织结构变化影响的相依性定量评估方法，以量化多相 BN 的参数。第四，通过多相 BN 评估多用途军事管理信息系统的安全性。最后，以一个三阶段任务的无人机系统为例，展示了所提方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Reliability Engineering & System Safety 管理科学-工程：工业

CiteScore

15.20

自引率

39.50%

发文量

621

审稿时长

67 days

期刊介绍： Elsevier publishes Reliability Engineering & System Safety in association with the European Safety and Reliability Association and the Safety Engineering and Risk Analysis Division. The international journal is devoted to developing and applying methods to enhance the safety and reliability of complex technological systems, like nuclear power plants, chemical plants, hazardous waste facilities, space systems, offshore and maritime systems, transportation systems, constructed infrastructure, and manufacturing plants. The journal normally publishes only articles that involve the analysis of substantive problems related to the reliability of complex systems or present techniques and/or theoretical results that have a discernable relationship to the solution of such problems. An important aim is to balance academic material and practical applications.