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Modeling Off-Nominal Behavior in SysML

Show simple item record Day, John C. Donahue, Kenneth Ingham, Michel Kadesch, Alex Kennedy, Andrew K. Post, Ethan 2013-01-18T17:30:25Z 2013-01-18T17:30:25Z 2012-06-21
dc.identifier.citation AIAA Infotech 2012: Garden Grove, California, June 19-21, 2012 en_US
dc.identifier.clearanceno 12-2279
dc.description.abstract Specification and development of fault management functionality in systems is performed in an ad hoc way - more of an art than a science. Improvements to system reliability, availability, safety and resilience will be limited without infusion of additional formality into the practice of fault management. Key to the formalization of fault management is a precise representation of off-nominal behavior. Using the upcoming Soil Moisture Active-Passive (SMAP) mission for source material, we have modeled the off-nominal behavior of the SMAP system during its initial spin-up activity, using the System Modeling Language (SysML). In the course of developing these models, we have developed generic patterns for capturing off-nominal behavior in SysML. We show how these patterns provide useful ways of reasoning about the system (e.g., checking for completeness and effectiveness) and allow the automatic generation of typical artifacts (e.g., success trees and FMECAs) used in system analyses. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2012. en_US
dc.subject System Modeling Language (SysML). en_US
dc.subject fault protection en_US
dc.title Modeling Off-Nominal Behavior in SysML en_US
dc.type Preprint en_US

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