Abstract:A novel analog fault diagnosis method applying multi-frequency response information fusion is proposed. Several signals with different frequencies are selected as the inputs of the analog circuit. The responses are processed by wavelet analysis and normalized to be the fault mode feature vectors. The test sample is associated with the fault mode feature vectors by gray correlation degrees, which constitute the basic probability assignment function. Different frequency responses in time-frequency domain act as the different evidences, which are fused by the D-S evidence reasoning to be a consistent diagnosis conclusion. Experimental results show that the proposed method is more accurate and costs less than the methods in being. It is effective even in the slight soft fault diagnosis.
钟建林, 何友, 王红星. 基于多频小波分析和D-S推理的电路故障诊断[J]. 电工技术学报, 2010, 25(8): 180-184.
Zhong Jianlin, He You, Wang Hongxing. Circuit Fault Diagnosis Based on Multi-Frequency Wavelet Analysis and D-S Reasoning. Transactions of China Electrotechnical Society, 2010, 25(8): 180-184.
[1] 李行善. 自动测试系统集成技术[M]. 北京: 电子工业出版社, 2004. [2] Hamida N B, Kaminska B. Multiple fault analog circuit testing by sensitivity analysis[J]. Journal of Electronic Testing: Theory and Applications, 1993(4): 331-343. [3] Nagi N. A comprehensive test framework for analog and mixed-signal circuits[D]. Austin: University of Texas at Austin, 1994. [4] 张玮, 沈士团, 李驿华. 一种面向输出响应的多频测试故障检测与隔离方法[J]. 遥测遥控, 2003(11): 43-46. [5] 何友, 王国宏, 等. 多传感器信息融合及应用[M]. 北京: 电子工业出版社, 2000. [6] 彭敏放, 何怡刚, 吕敬祥. 基于智能信息融合的模拟电路故障定位方法[J]. 电工技术学报, 2005, 20(11): 93-96. [7] 孙永奎. 基于自适应小波分解和SVM的模拟电路故障诊断[J]. 仪器仪表学报, 2008, 29(10): 2105-2109. [8] 谭阳红, 何怡刚. 模拟电路故障诊断的小波方法[J].电工技术学报, 2005, 20(8): 89-93. [9] 傅立. 灰色系统理论及其应用[M]. 北京: 科学技术文献出版社, 1992. [10] Alippi C, Catelani M, Fort A, et al. Automated selection of test frequencies for fault diagnosis in analog electronic circuits[J]. IEEE Transactions on instrumentation and Measurement, 2005, 54(3): 1033-1044. [11] 关履泰. 小波方法与应用[M]. 北京: 高等教育出版社, 2007. [12] 王淑娟, 陈博, 赵国良. 基于小波包变换预处理的模拟电路故障诊断方法[J]. 电工技术学报, 2003, 18(8): 118-122. [13] Aminian F, Aminian M. Neural-network based analog-circuit fault diagnosis using wavelet transform as preprocessor[J]. IEEE Transactions on Circuits and System II: Analog and Digital Signal Processing, 2000, 47(2): 151-156.