Analog circuit degradation location method based on multi-point matching voting

The wide application of analog circuits makes the health assessment of analog circuits more and more important. The purpose of analog circuit health assessment is to find the degradation of analog circuit in time, replace and repair it in time, and ensure the safe and stable operation of analog circuit. Mahalanobis distance can easily measure the distance between the observed sample and the known sample set, which is very suitable for degradation localization of analog circuits. In this paper, a method of analog circuit degradation device identification considering multi time matching voting of performance parameters is proposed, which improves the traditional Mahalanobis distance degradation location method, selects effective reference data for matching, and adopts the principle of proportion voting for location, so as to make the degradation location of analog circuit more accurate and promote the health assessment of analog circuit.