该报告展示了Goddard航天飞行中心（GSFC）利用现有商业软件将可靠性学科纳入基于模型的系统工程（MBSE），并通过对实际项目中的子系统建模进行成果测试，最后指出了该项目下一阶段的发展方向。 导读. 本文译自NASA2020年度可靠性维修性研讨会（Annual Reliability & Maintainability Symposium ，RAMS）的一份报告。 该报告展示了Goddard航天飞行中心（GSFC）利用现有商业软件将可靠性学科纳入基于模型的系统工程（MBSE），并通过对实 …

本文为该系列的第二篇文章，介绍用于评估基于模型的安全和任务保证（MBSMA）可靠性的测试方法。 这个用于评估MBSMA可靠性的测试方法针对了此初始评估阶段的分析类型，该分析类型几乎用于所有的任务类别（FMECA，FTA，LLA，PA），用以在此研究的较短时间内实现完整的评估和人工制品的生产，在质量和兼容性的风险评估和危害报告上的初步发现，以及对建模进行指导。 出于相同的原因，在型号和子系统不同的情况下，每种型号的测试用例范围也仅限于一个 …

this recommended MBSMA process: 1) Establish a multi-discipline modeling team (Systems Engineering (SE) and Safety and Mission Assurance (SMA) at a minimum); 2) Establish modeling responsibilities (e.g., SE’s model requirements, Designer’s model structure (Functional Block Diagram/Wire Diagram), REs model failure behaviors

Safety Case (reference Wikipedia) – A structured argument, supported by evidence, intended to justify that a system is acceptable safe for a specific application in a specific operating environment.

2019年1月21日 · Determine if it is possible (and how) to transfer/incorporate SMA/MBSMA model findings (e.g., failure modes, fault events) into a DE/MBSE system model and emulate/attach artifacts (e.g., FMECA, Fault Tree).

Model-Based Safety and Mission Assurance Implementation (MBSMAI) will answer the questions: Is Model-Based Engineering/Digital Engineering (MBE/DE) valid and usable for all SMA Engineering disciplines? What is needed to enable model-based/digital SMA?

Office of Safety and Mission Assurance (OSMA) is supporting and working to develop several key strategies and approaches to address the complex assurance challenges of NASA’s upcoming missions. Together these will comprise an advanced framework for complex systems assurance, compatible with Model Based Systems Engineering (MBSE) approaches.

2024年5月1日 · Multidimensional coupling of indexes characterizing different subsystems is considered to achieve the quantification of inter-subsystem associations from the perspective of the entire system safety.

2024年3月1日 · Providing time-resolution for aerothermal-mechanical system safety analysis. System model contains inertia effects to reflect dynamic characteristics. Fault model incorporates modules for time-related parameters. Identifying Safety Critical Parameters for …

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