As the end point of power delivery, a distribution system is directly connected with the consumers. It has complex structures and various operation modes which make the reliability even more important. However, the traditional FMEA cannot be applied to the complex distribution system which contains ring networks. Taking the capacity constraint of distribution system into consideration, this paper analyzes the reliability of IEEE DRTS system with FMEA based on the minimum cut set.
Reliability is one of the critical attributes for long life and high performance satellite. To deal with the limitation on satellite reliability analysis confronted in the past decades, a series of papers has been published recently by Saleh et al. In these papers, thousands of Earth-orbiting satellites successfully launched between 1990 and 2008 have been analyzed. This paper extends the statistical analysis of satellite reliability based on the same database. The satellite reliability is modeled using a modified Weibull extension distribution. The parametric estimation is carried out by utilizing the nonlinear least squares method. Finally, a comparative analysis is conducted on the fitting results of Weibull and modified Weibull extension distribution. The results demonstrate that the modified Weibull extension distribution is more accurate and flexible in modeling the satellite reliability than the traditional Weibull distribution. The accuracy and convenience of the modified Weibull extension distribution indicates its practical application in engineering designs.
Redundancy technology is widely used as an effective design technique in improving task reliability and safety of system. However, the increasing units result in depression of basic reliability. To keep a balance between these two targets is one of the main aspects in redundancy design. In this paper, we establish game model of FCS reliability using static game theory with incomplete information, and generate corresponding Bayesian Nash Equilibrium, with which we can define redundant configuration under limited maintenance cost approximately. This paper provides the theoretical reference for FCS redundancy design.
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