基于递归图和张量分解的故障可诊断性评价方法
Acta Armamentarii（2023）
Abstract
可诊断性反映了系统故障诊断的难易程度,对系统进行可诊断性评价是开展故障诊断工作的前提条件.针对可诊断性评价问题,将测点信号考虑在内,提出了一种基于递归图和张量分解的故障可诊断性评价方法.利用相空间重构技术对装备在不同状态下的测点信号进行图形化表示,形成递归图;对递归图进行分析以提取其中的特征,并将该特征视为原信号特征;通过张量分解的方法,计算不同状态下信号特征之间的相似程度,作为故障诊断难易程度的基本度量.通过仿真实验对所提出的方法与仅考虑系统模型的D矩阵的可诊断性评价方法进行对比,结果表明该方法在评价可诊断性方面具有准确性和客观性.
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