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Modeling Off-Nominal Behavior in SysMLSpecification 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.
Document ID
20130009268
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Day, John C.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Donahue, Kenneth
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Ingham, Michel
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Kadesch, Alex
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Kennedy, Andrew K.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Post, Ethan
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 27, 2013
Publication Date
June 21, 2012
Subject Category
Quality Assurance And Reliability
Distribution Limits
Public
Copyright
Other
Keywords
fault protection
System Modeling Language (SysML).

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