关键词: 可靠性, 系统Signature, 模块化, 备份系统

Abstract: System Signature is a set of vectors reflecting the superiority of structural design that can describe the impact of system design on system failure rates. It shows powerful features such as system reliability analysis, system design, system life comparison, system life-limit behavior and system design optimization, and has become an increasingly important research method in reliability research. The difficulty of Signature calculation increases exponentially with the increase of the components number as the system is large and complex, which undoubtedly poses a huge obstacle to subsequent analysis, so the key step in the analysis is to solve a system signature. This paper establishes algorithms of system Signature based on ideas of modularization, and gives algorithms of Signature of modular series or parallel system and modular redundancy system. Compared with conventional ways, using ideas of modularization can efficiently reduce the time and the complexity and amount of calculation in computing Signature, and expand the system range that can be solved for system Signature.

Key words: reliability, system Signature, modularization, redundancy system