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A New Method for Analog Circuit Fault Diagnosis Based on Slope Characteristics
Pages: 34-37
Year: Issue:  1
Journal: Measurement & Control Technology

Keyword:  analog circuitfault diagnosistestabilityslope characteristics;
Abstract: 针对低可测性模拟电路存在的模糊组问题,提出一种模拟电路故障诊断新方法.利用不同元件在电路可及节点间的斜率特征关系建立斜率测试矩阵,依据斜率测试矩阵准确找到电路中存在的模糊组和独立可测元件,从而确定可诊断集,然后利用支持向量机对故障进行诊断.斜率法优点在于不需要对电路拓扑结构进行分析,计算简便,支持向量机结构简单,泛化能力强.实验表明该方法具有良好的模拟电路故障诊断效果.
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