摘要
针对大型网络系统故障模式间存在相关性,所导致的系统可靠性定量计算过程复杂且计算量大的问题,提出了网络系统可靠性定量计算的一种有效方法。通过定义故障模式之间的相关度,有效地考虑故障模式之间的相关性,给出了相关度的计算方法。从而可通过各故障模式的故障概率和故障模式之间的相关度综合确定系统的故障概率或可靠度。实例计算表明,该方法有较高的计算效率和精度。
An efficient method for computing the fault probability of network systems is presented. In the method, a concept called degree of dependence between fault modes is given, by which the correlation between fault modes can be taken into account efficiently, and a method to calculate the degree of dependence is proposed. The fault probability of systems can be determined by means of the fault probability of each fault mode and the degree of dependence between fault modes. Some detailed formulations and steps of computational realization are developed. Two numerical examples are provided to illustrate the effectiveness of the proposed method. It is shown that the method has a considerable efficiency and accuracy, and applicable for large-scale systems.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2005年第4期744-747,共4页
Systems Engineering and Electronics
基金
中国博士后科学基金 (2 0 0 3 0 3 4410 )
空军工程大学学术基金 (2 0 0 2X10 )资助课题
关键词
网络系统
可靠性
故障模式
故障概率
network system
reliability
fault mode
fault probability
