基于Ion-Channel的故障多态安全关键系统可靠性研究

通过分析安全关键系统的特点,综合考虑了不同的部件失效模式、维修模式导致系统的不同安全性,建立了部件故障三态、系统故障多态模型.由于系统中每一个部件有工作、安全和危险3种状态,系统状态数随着部件数的增加急剧增加,此情况与生物学中离子通道模型极为相似,作者利用生物学中Ion-Channel理论来聚合系统状态,从而得出一些重要的系统分布和可靠性指标,该模型对系统故障进行了更为细致的划分,提高了分析的准确性.

The Reliability Research on Multi-State Failure of Safety Critical System Based on Ion-Channel

Safety critical system is different from the general system for its multi-state failure particularity. It also has high requirements for maintenance on the grounds of its high safety and high precision particularity. By analyzing the characteristics of safety critical system and comprehensively considering the various securities caused by different components failure modes and maintenance modes, the model of tri-state component failure and multi-state system failure is established. As there are work, safety and danger three states for each component, when taking into account the complexity of system architecture, the system state number increases dramatically with the increase of the component number. The same situation is in the study of ion channels in biology. Based on Ion-Channel theory of biology, the states of safety critical system presented in this paper are aggregated and some important system dispersion and reliability indicators are drawn. The established model has carried on a more careful division to the system failure and enhanced the analysis accuracy.