Fuzzy logic in control systems: fuzzy logic controller. I

C.C. Lee
1990 IEEE Transactions on Systems, Man and Cybernetics  
During the past several years, fuzzy control has emerged as one of the most active and fruitful areas for research in the applications of fuzzy set theory, especially in the realm of industrial processes which do not lead them selves to control by conventional methods because of a lack of quantitative data regarding the input-output relations. Fuzzy control is based on fuzzy logic -a logical system which is much closer in spirit to human thinking and natural language than traditional logical
more » ... tems. The Fuzzy Logic Controller (FLC) based on fuzzy logic provides a means of converting a linguistic control strategy based on expert knowledge into an automatic control strategy. This paper presents a survey of the FLC; describes a general methodology for constructing an FLC and assessing its per formance; and points to problems which need further research. In particular, our exposition includes a discussion of fuzzification and denazification stra tegies, the derivation of the database and fuzzy control rules, the definition of fuzzy implication, and an analysis of fuzzy reasoning mechanisms.
doi:10.1109/21.52551 fatcat:56hot4lt6zbzbbhkualwwceveq