Analog fault AC dictionary creation - the fuzzy set approach

This paper discusses the basic concept of analog functional test approach. Recently, most on going research has been focused on distinguishing faulty or healthy circuit - from the manufacturer´s point of view, this is more important than locating particular faulty element. The article shows the concept of fuzzy theory approach to functional test creation. To find and locate faulty circuit (system) the sensitivity matrix can be used. It has been observed that for most practical circuits the sensitivity matrix is sparse. This observation has been utilized in the fuzzy expert system and the system modification based on the reduction of the sensitivity matrix size has been proposed. The modified system can effectively decide whether the system is faulty or healthy. The results obtained and presented here are promising and tend to prove that the proposed strategy can improve fault detection on a production line