Diagnosing of a complex technical object in four-valued logic

• Published in: Biuletyn Wojskowej Akademii Technicznej Vol. 67; no. 1; pp. 33 - 42
• Main Authors: Duer, Stanisław, Bernatowicz, Dariusz, Wrzesień, Paweł, Duer, Radosław
• Format: Journal Article
• Language: English
• Published: Military University of Technology, Warsaw 03.04.2018
• Subjects: artificial intelligence; diagnostic inference; multiple-valued logic; technical diagnostics
• ISSN: 1234-5865
• DOI: 10.5604/01.3001.0011.8018

This paper presents the essence of an investigation of a complex technical object with the use of four-valued logic. To this end, an intelligent diagnostic system (DIAG 2) is described. A special feature of this system was its capability of inferring k at {k = 4, 3, 2}, in which case the logic {k = 4} is applied. An important part of this work was to present the theoretical foundations describing the essence of inference in the four-valued logic contemplated. It was also pointed out that the basis for classification of states in the multiple-valued logic of the diagnostic system (DIAG 2) was the permissible interval of changes in the values of diagnostic signal features. Four-valued logic testing was applied to a system of wind turbine equipment. Keywords: technical diagnostics, diagnostic inference, multiple-valued logic, artificial intelligence