摘要
应用混合Petri网建立故障诊断模型,应用广义随机Petri网建立Boe ing 777非相似余度飞控计算机故障行为模型.描述了非相似余度系统的结构以及故障的产生和传播的动态过程,分析了该系统的可靠度和容错度,并有效地消除了瞬态故障对分析系统可靠性的影响.
Hybrid Petri nets（HPN） is adopted to develop the model of failure detection and identification（FDI）, and generalized stochastic Petri nets（GSPN） is applied to describe and analysis the dissimilar redundant flight control computers of Boeing 777. By using Petri nets, static architectures of the dissimilar redundant system and dynamic behaviors of fault generation and promulgation are properly described. And the effect of transient error on reliability analysis of redundant system can also be eliminated. GSPN model is converted to Markov chain to calculate the reliability of the system, and the incidence matrix is used to compute the ability of fault-tolerance.
出处
《控制与决策》
EI
CSCD
北大核心
2005年第10期1173-1176,共4页
Control and Decision
基金
国家自然科学基金重大研究计划项目(90205011)
