基于波形相似度的容差模拟电路软故障诊断OA北大核心CSCDCSTPCD
Soft Fault Diagnosis Based on Waveform Similarity for Tolerance Analog Circuit
针对容差模拟电路输出波形参数的随机性,构造了描述特定电路状态的特征区间向量,据此提出了一种基于多频响应波形相似度的软故障诊断方法。对每一种软故障,分别施加K种不同频率的激励信号,获取K个由输出响应构成的标准特征区间向量作为该故障状态的信号特征。对待测电路施加相同的K种频率的激励信号,获取K个待测样本,分别与每种故障模式的K个相应的标准特征区间向量进行相似度计算,获取K个波形相似度,在波形相似度融合中考虑了均方差权重系数和可信度权重系数,得到待测样…查看全部>>
Regarding to the random attribute of the parameters of tolerance analog circuit output waveform,the feature interval vector used to describe the tolerance analog circuit in a certain mode is constructed.Accordingly,a novel soft fault diagnosis method based on waveform similarity acquired by multi-frequency tests is proposed.For each fault mode of the circuit under test,K standard feature interval vectors are acquired by K tests with alternating current signa…查看全部>>
钟建林;何友;任献彬
海军航空工程学院,烟台264001海军航空工程学院,烟台264001海军航空工程学院,烟台264001
信息技术与安全科学
模拟电路故障诊断特征区间向量多频测试波形相似度
Analog circuitfault diagnosisfeature interval vectormulti-frequency testwaveform similarity
《电工技术学报》 2012 (8)
222-229,8
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