Abstract
Designing systems that satisfy target reliability is a challenge because of complex assembly structures and logical connections, numerous components and associated failure modes, and multi-disciplinary considerations. To overcome these difficulties and to design reliable systems in a systematic way, we have developed a knowledge representation for system design-for-reliability (SDfR). It is called reliability object model (ROM). ROM includes (1) a new reliability analysis structure, (2) reliability metrics that consider both random failures and wear-out failures, (3) algorithms that allocate, predict, and assess reliability, and (4) rules for reliability-oriented design change recommendations. These capabilities of ROM are demonstrated by prototype SDfR tools and three electronic system case studies. The results show that ROM is an effective unified method for SDfR, providing richer semantics and increasing the chances of developing reliable designs.
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