Digital Fly-By-Wire (FBW) Flight Control System (FCS) is designed to achieve high level of reliability, frequently employ high level of redundancy. Dynamic redundancy employed in FEW system can realize complex fault and error diagnosis, recovery and reconfiguration. It is very difficult to analyze the reliability of the FEW system by traditional methods, such as Fault Tree Analysis (FTA) or Network Analysis. This paper describes dynamic fault-tree modeling techniques for handling these difficulties and provides a Markov Chain generation modeling method for coverting Dynamic Fault Tree to Markov Chain. The software failure of the FBW system can also be considered in the model. An example of a quadruple FEW redundant system and a Markov State Transition Chain software package (MSTCP) are given.
Dynamic fault tree analysis for digital fly-by-wire flight control system
01.01.1996
443000 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Dynamic Fault Tree Analysis for Digital Fly-by-Wire Flight Control Systems
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