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With the rapid development of integrated circuits technology, fewer and fewer circuit nodes are accessible for analog fault detection. In this research, the transient output voltage of analog circuits was used for fault detection. The circuits was stimulated by a transient signal source. It's transient output voltage was measured and analyzed. Then we extracted the features of this signal. Principal...
A method based on wavelet packets and PCA is developed for testing of analog circuits. It can detect both hard and soft faults in an analog electronic circuit by analyzing its output voltage response. The wavelet packets decomposition tree of the output voltage response is computed and the energy of every decomposed signal is used to form the feature vector. These features are combined by PCA to detect...
In view of the difficulties caused by component tolerance, a method based on principal component analysis (PCA) is proposed for fault detection of analog circuits. The basic model of the proposed method and the general rule for analog fault detection are described in detail. At first, the principal component model of fault-free circuit is constructed. Then the circuits-under-test are compared with...
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