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Computationally-efficient phased-mission reliability analysis for systems with variable configurations

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3 Author(s)
A. K. Somani ; Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA ; J. A. Ritcey ; S. H. L. Au

Several techniques and a software tool for reliability analyses that generally apply to fault-tolerant systems operating in phased-missions are given. Efficient models, using Markov chains without an explosion of the state space, are provided for missions consisting of multiple phases, during which the system configuration or success criteria can change. In different phases, the failure rates and the fault and error handling models can also change, and the duration of any phase can use deterministic or random models. An efficient reconfiguration procedure that is computationally more efficient than any existing technique is developed. The technique is demonstrated using a numerical example to show the effects of mission phases on the system reliability

Published in:

IEEE Transactions on Reliability  (Volume:41 ,  Issue: 4 )