As NASA and the space community, in general, strive to push the boundaries of space travel with planned deep-space missions, increased system autonomy and resiliency have inevitably become key technology needs. Designing these complex systems requires a multi-disciplinary approach that connects fault management (FM) with model-based systems engineering (MBSE) to ensure that resilient, fault-tolerant systems are architected and modeled during the design phase. NASA has been using TEAMS® as their fault management tool of choice for several decades. NASA also uses Systems Modeling Language (SysML) for systems engineering, including the design, specification, verification, and validation of systems.
SysML v2 is the upcoming revision of the SysML, and QSI is working with SysML v2 Submission Team (SST), a diverse group of end users, vendors, academics, and government liaisons involved in the development of SysML v2 specifications, to extend the SysML v2 for Fault Management and Diagnostics. In a SBIR project funded by NASA, QSI demonstrated translation capabilities from a SysML v2 model to a TEAMS® model, which will enable Systems Engineers to analyze the fault management aspects of a system design captured in SysML v2 using QSI’s Model based reasoning COTS product, TEAMS®-Designer. Using TEAMS®-Designer, analysts may perform Fault Modes, Effects, and Criticality Analysis (FMECA) and Fault Tree Analysis to analyze, quantify and improve the diagnostics and availability of the system. The improvements resulting from such analysis can be brought back into SysML in industry standard formats such as the Risk Analysis and Assessment Modeling Language (RAAML), facilitating broader stakeholder visibility.
Recently, the DoD SysML v2 Transition Project hosted a 1-day SysML v2 Transition Information Session at the INCOSE 2024 IW in Torrance, California. The project, led by the DoD Digital Engineering, Modeling, and Simulation Office, provides guidance to assist organizations in their transition to SysML v2. QSI’s multidisciplinary approach to integrate Fault Management analysis with Systems Engineering was presented in INCOSE 24.
For further information, please contact QSI.
