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为解决位置不可访问故障的有效注入问题,在深入分析影响故障注入有效性主要因素的基础上,建立了基于贝叶斯信度传播算法的故障-状态、故障-故障之间传递特性分析模型,并以故障传递特性为依据,研究建立了包含故障传递特性的故障模型,提出了基于该故障模型的位置不可访问故障注入方法。研究表明基于故障传递特性的故障注入方法能在保证较高的故障样本注入率,有效节省试验费用的情况下,较好地解决装备位置不可访问故障的注入问题,具有重要的理论意义和工程指导作用。
In order to solve the problem of effectively injecting inaccessible location, the paper analyzes the main factors that affect the effectiveness of fault injection, and establishes the analysis model of fault-state, fault-fault based on Bayesian belief propagation algorithm. Based on the fault transfer characteristics, a fault model including fault transfer characteristics is established and a location-based fault injection method based on this fault model is proposed. The research shows that the fault injection method based on fault transfer characteristics can well solve the problem of injecting inaccessible equipment in the condition of ensuring a high injection rate of fault samples and saving test costs effectively, which has important theoretical significance and engineering guidance effect.