基于矩独立重要度的电路系统容错设计方法

Circuit failure is inevitable during operation and fault-tolerant design can significantly reduce the risk of failure. The traditional fault-tolerant method of circuit system is to analyze and improve the system mainly based on the designer's experience and cognition. However, it is usually difficult to determine accurately the important components that have significant impact on the system performance. Therefore, a fault-tolerant design method of circuit system based on importance analysis is proposed in this paper. Firstly, the definition and calculation method of moment-independent importance of circuit system are proposed to calculate and rank the moment-independent importance of components in the circuit system. Secondly, the quantitative relationship between redundancy coefficient and redundancy number is introduced, and the mapping rule of importance-redundancy coefficient is developed, based on which fault-tolerant design of circuit system can be optimized. Finally, a space power regulator is taken as an example to verify the effectiveness of the proposed method. The fault-tolerant design method of circuit system based on moment-independent importance presented in this paper is of great significance for improving the fault-tolerant ability of circuit system and improving the reliability of circuit system.