The invariance of node-voltage sensitivity sequence and its application ina unified fault detection dictionary method

This paper proposes and proves an important theorem and its corollary for l inear analog circuits, i,e,, the invariance of the node-voltage sensitivity sequence and the invariance of the node-voltage change sequence. Based on them, a unified fault detection dictionary method for both hard and soft fa ults in analog circuits is proposed. This method uses only one fault charac teristic code to detect any hard or soft fault of any component. In additio n, the size of the dictionary is only one half of that of the original hard fault dictionary.