中文摘要：

不完全覆盖问题对冗余系统可靠性有极大影响,因此在系统可靠性评估过程中必须予以考虑。提出了一种新颖的冗余系统不完全覆盖模型,在建模过程中能够综合考虑共因失效和差异冗余因素对于系统诊断覆盖率的影响。使用一个基于自检查对结构实现冗余管理功能的双通道冗余系统阐明了所提出的方法。

英文摘要：

Imperfect coverage（ IPC） has to be considered in course of reliability assessment of a redundant system because IPC has a negative effect on system reliability. Therefore,a novel method is proposed in this paper to model IPC for a redundant system. Diagnostic coverage can be determined considering both of the common cause failure and diversity. A dual channel system in which redundancy management is implemented based on self- checking pairs is used to illustrate the novel model.