A New Hybrid Fault Diagnostic Method for Combining Dependency Matrix Diagnosis and Fuzzy Diagnosis Based on an Enhanced Inference Operator
A New Hybrid Fault Diagnostic Method for Combining Dependency Matrix Diagnosis and Fuzzy Diagnosis Based on an Enhanced Inference Operator
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DOI：
10.1007/s00034-015-0047-z
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发表时间：
2015-04
期刊：
影响因子：
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通讯作者：
Junyou Shi;Long Chen;Wei-Wei Cui-Wei
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文献类型：
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作者：
Junyou Shi;Long Chen;Wei-Wei Cui-Wei
本文致力于通过组合逻辑信号(如内置测试输出)和模拟信号(如电压、电流和温度)来进行电子系统的故障诊断。首先，介绍了依赖矩阵(D矩阵)诊断和模糊诊断的基本推理原理，总结了它们的推理算子的特点。然后，分析了两种诊断方法的异同。基于贴近度的判断，定义了一种既适用于D矩阵又适用于模糊关系矩阵(R矩阵)的增强型推理算子。定义了一种DR矩阵来描述故障与两类信号之间的混合关系。基于增强型推理算子和DR矩阵，建立了一种新的混合诊断方法。最后，用信号调制电路验证了增强型推理算子在D矩阵、R矩阵和DR矩阵上的有效性，验证了增强型推理算子的高效性和新混合诊断方法的可行性。
This paper is devoted to the fault diagnosis of electronic systems by combining logical signals, such as built-in test output, and analog signals, such as voltage, current and temperature. First, the basic inference principles of dependency matrix (D matrix) diagnosis and fuzzy diagnosis are introduced, and the characteristics of their inference operators are summarized. Then, the similarities and differences between the two diagnostic methods are analyzed. Based on the judgement of close degree, a new enhanced inference operator is defined to suit both the D matrix and the fuzzy relation matrix (R matrix). A DR matrix is defined to describe the mixed relationships between faults and the two types of signals. Based on the enhanced inference operator and the DR matrix, a new hybrid diagnostic method is established. Finally, a signal modulating circuit is used to verify the effectiveness of the enhanced inference operator on the D matrix, the R matrix and the DR matrix, which demonstrates the high efficiency of the enhanced inference operator and the feasibility of the new hybrid diagnostic method.