By the same authors

Survivability Management for Integrated Modular Safety-Critical Space Systems

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Title of host publicationProceedings of the 3rd International Association for the Advancement of Space Safety (IAASS 2008). Roma (Italy). 21-23 October 2008
DatePublished - 2008
PublisherInternational Association for the Advancement of Space Safety
Original languageEnglish

Abstract

Survivability is a critical attribute for dependable systems, such as avionics, and it is tightly connected to system safety. Modern aircraft and spacecraft avionics are developed as integrated modular systems. We explore the possibility of using dynamic reconfiguration to augment the survivability of this specific kind of system in adverse operating scenarios, e.g. as a fault containment means. We propose an approach based on the Constraint Programming paradigm, as it is able to manage contextually several heterogeneous parameters that influence this complex operation. Key parameters involve task scheduling, hardware resources, operating mode, mission objectives, faults and dependability requirements. We also extend our framework to interactive scenarios, e.g. manned or remotely controlled spacecraft. In order to produce situation awareness for the operators, our system is able to automatically generate explanations of autonomous reconfiguration and fault containment actions in real-time. Our research is addressing ways of making the explanations readily understood.

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