模拟电路多频故障诊断中测试点和频率的选择

Selection of Test Point and Frequency in Multifrequency Fault Diagnosis

利用参数识别法的多频技术对线性模拟电路进行故障诊断是故障诊断法中一类比较有效的方法,近年来这种多频故障诊断有CCM模型法、节点法、改进节点法,V-I双图模型法等。在这类多频故障诊断法中,如何选择测试点和测试频率至今未见报道。但该问题却是多频故障诊断的关键,为此,作者运用广义线性函数理论,提出了选择测试点和频率的一种方法,编制了程序,从几个实例来看,该法是可行的。

Based on the theory of generalized linear function, a method for selecting the test point and frequency in multifrequency fault diagnosis for analog linear circuit is introduced in this paper. According to this, the program has been designed, several examples are given to verify the method.