Fault trees and sequence dependenciesOne of the frequently cited shortcomings of fault-tree models, their inability to model so-called sequence dependencies, is discussed. Several sources of such sequence dependencies are discussed, and new fault-tree gates to capture this behavior are defined. These complex behaviors can be included in present fault-tree models because they utilize a Markov solution. The utility of the new gates is demonstrated by presenting several models of the fault-tolerant parallel processor, which include both hot and cold spares.
Document ID
19910046436
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Dugan, Joanne Bechta (Duke Univ. Durham, NC, United States)
Boyd, Mark A. (Duke University Durham, NC, United States)
Bavuso, Salvatore J. (NASA Langley Research Center Hampton, VA, United States)