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Verification of the redundancy management system for space launch vehicle: a case study

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5 Author(s)
Sokolsky, O. ; Comput. Command & Control Co., Philadelphia, PA, USA ; Younis, M. ; Insup Lee ; Hee-Hwan Kwak
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Formal methods have been widely recognized as effective techniques to uncover design errors that could be missed by a conventional software engineering process. The paper describes the authors' experience with using formal methods in analyzing the redundancy management system (RMS) for a space launch vehicle. RMS is developed by AlliedSignal Inc. for the avionics of NASA's new space shuttle, called VentureStar, that meets the expectations for space missions in the 21st century. A process algebraic formalism is used to construct a formal specification based on the actual RMS design specifications. Analysis is performed using PARAGON, a toolset for formal specification and verification of distributed real-time systems. A number of real-time and fault-tolerance properties were verified, allowing some errors in the RMS pseudocode to be detected. The paper discusses the translation of the RMS specification into process algebra formal notation and results of the formal verification

Published in:

Real-Time Technology and Applications Symposium, 1998. Proceedings. Fourth IEEE

Date of Conference:

3-5 Jun 1998