Coverage Modelling for Reliability Assessment Self-Repairing Flight Control Systems

This paper reports a coverage model for assessing the overall reliability of self-repairing flight control systems where the performance of an FDIA (Failure Detection, Isolation and Accommodation) logic is involved. Provided that each of the N parallel redundant components is of the same exponential failure probability and non-repairable on-line, it has been proved that the resulting failure process can be described by a homogeneous Markov chain model if the failure can be identified perfectly by the FDIA scheme used, otherwise the process is non-homogeneous. Furthermore, for either homogeneous or non-homogeneous case approximation of computing the failure transition probability and the corresponding error have been derived.