Reliability Importance Analysis of Generalized Phased-Mission Systems
Volume 3, Number 3, July 2007 - Paper 1 - pp. 303 - 318
LIUDONG XINGElectrical and Computer Engineering Department.
University of Massachusetts Dartmouth
285 Old Westport Road, North Dartmouth, MA 02747, USA
(Received on June 8, 2006)
Reliability importance analysis is usually used to detect design weakness, to identify which components contribute the most to the failure of a system, and thus to help find the most cost-effective way for upgrading the system. In this paper, we consider the reliability importance analysis of components in a generalized phased-mission system using the Birnbaum's measure. Our method is based on multi-state binary decision diagrams. In addition, it accounts for two-level modular imperfect coverage that arises from the combination of traditional imperfect coverage and more general than OR-ed combinatorial phase requirements. An example three-phased mission system is analyzed to illustrate the applications and advantages of the proposed approach.
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