Research on Tolerance Handling Method for Analog Fault Diagnosis
Research on Tolerance Handling Method for Analog Fault Diagnosis
复制标题
模拟故障诊断容差处理方法研究
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Long Bing
中科院分区：
文献类型：
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作者：
Yang Cheng-Lin;Tian Shu-Lin;Long Bing
基于坡度的故障建模方法是解决软、硬故障诊断问题的有效方法。但由于容差的影响，在实际的电路故障诊断中并不适用。本文给出了几种公差处理方法。首先，坡度特征曲线的公共点不是一个固定的值，而是由被测CUT的实际电路导出的。因此，容差信息包含在公共点中。其次，由于容差的影响，潜在断层分量的坡度特征不是一个单一的值，而是一个扇形区域。该扇形区域可用解析法或模拟法求得。该方法解决了基于坡度的故障诊断方法的容差影响。
The slope-based fault modeling method is a good solution for soft and hard fault diagnosis problems.But it is not applicable to practical circuit fault diagnosis due to the influence of tolerance.Several tolerance handling methods are given in this paper.First,the public point of slope feature curves is not a fixed value but derived from the actual circuit under test CUT.Hence,the tolerance information is contained in the public point.Secondly,due to the influence of tolerance,the slope feature of a potential fault component is not a sole value but a fan-shaped area.This fan-shaped area can be obtained by using either analytical method or simulated method.The proposed methods solve the tolerance influence of slope-based fault diagnosis methods.