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Advances in Fuzzy Systems
Volume 2013 (2013), Article ID 874393, 9 pages
Research Article

Fault Diagnosis in Dynamic Systems Using Fuzzy Interacting Observers

Concern Central Scientific and Research Institute ELEKTROPRIBOR, JSC, State Research Center of the Russian Federation, 30 Malaya Posadskaya Street, Saint Petersburg 197046, Russia

Received 12 September 2012; Accepted 1 January 2013

Academic Editor: Sendren Sheng-Dong Xu

Copyright © 2013 N. V. Kolesov. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A method of fault diagnosis in dynamic systems based on a fuzzy approach is proposed. The new method possesses two basic specific features which distinguish it from the other known fuzzy methods based on the application of fuzzy logic and a bank of state observers. First, this method uses a bank of interacting observers instead of traditional independent observers. The second specific feature of the proposed method is the assumption that there is no strict boundary between the serviceable and disabled technical states of the system, which makes it possible to specify a decision making rule for fault diagnosis.