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。
A failure propagation characteristics-based failure model and such a model-based injection method of failures resulting from inaccessible location fault are studied to deal with the incapability of effective injection of such failures. This is achieved by a detailed analysis on the major factors affecting the effectiveness of failure injection in light of failure propagation characteristics, such as fault and condition, fault and fault. The study demonstrates that the failure propagation characteristics-based failure injection method can effectively deal with the issue of injection incapability of failures resulting from inaccessible locations while considerably reducing the fault injection cost. The study is of theoretical interest and may find wide engineering applications.
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