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Erschienen in:
2012 | OriginalPaper | Buchkapitel
Formal Development and Assessment of a Reconfigurable On-board Satellite System
verfasst von : Anton Tarasyuk, Inna Pereverzeva, Elena Troubitsyna, Timo Latvala, Laura Nummila
Erschienen in: Computer Safety, Reliability, and Security
Verlag: Springer Berlin Heidelberg
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Ensuring fault tolerance of satellite systems is critical for achieving goals of the space mission. Since the use of redundancy is restricted by the size and the weight of the on-board equipments, the designers need to rely on dynamic reconfiguration in case of failures of some components. In this paper we propose a formal approach to development of dynamically reconfigurable systems in Event-B. Our approach allows us to build the system that can discover possible reconfiguration strategy and continue to provide its services despite failures of its vital components. We integrate probabilistic verification to evaluate reconfiguration alternatives. Our approach is illustrated by a case study from aerospace domain.