Patent
1993-02-24
1998-08-25
Nafiz, Tariq R.
395900, G06G 700
Patent
active
057991324
ABSTRACT:
A fuzzy logic electronic controller whereby predetermined membership functions .mu.(x) of logic (X) variables are subjected to so-called inference operations configured essentially as IF-THEN rules with at least one front preposition and at least one rear implication. The controller is of a kind which includes an input or fuzzyfier section having a plurality of inputs for analog or digital signals, a central control unit or fuzzy controller core placed after said input section and being provided with memories, and an output section or defuzzyfier connected to the output of the central unit to convert the results of the inference operations back to analog or digital signals. The controller includes a plurality of fuzzyfiers being disposed in parallel within said input section and each connected to a pair of analog and digital inputs, a plurality of storage modules corresponding in number to said fuzzyfiers and containing data of the front prepositions only of said rules, a fuzzy controller inference unit active in the central control unit to carry out logic operations based on said inference rules of the fuzzy logic by extracting data from said memories through an interfacing circuit, and an additional memory coupled between the fuzzy controller inference unit and the defuzzyfier and adapted to contain data pertaining to the rear (THEN) implications only of said inference rules.
REFERENCES:
patent: 5202954 (1993-04-01), Miyazawa et al.
patent: 5206566 (1993-04-01), Yoshida et al.
patent: 5261036 (1993-11-01), Nakano
patent: 5299283 (1994-03-01), Hamamoto
patent: 5305424 (1994-04-01), Ma et al.
patent: 5343553 (1994-08-01), Miyazawa et al.
patent: 5371832 (1994-12-01), Eichfeld et al.
Proceedings of the Twentieth International Symposium in Multiple-Value Logic, May, 1990, Charlotte, US, pp. 394-400, Li Zhijian, Jiang Hong, "A CMOS Current-Mode High Speed Fuzzy Logic Microprocessor for a Real Time Expert System".
Microprocessing and Microprogramming, vol. 24, No. 1-5, Aug., 1988, Amsterdam, NL, pp. 647-654, E.L. Zapata, et al. "A VSLI Systolic Architecture for Fuzzy Clustering".
Huang et al, "Efficient computer implementation of a rule-based three-term controller"; Proceedings of the 27th IEEE Conference on Decision and Control, pp. 2247-2248, Dec. 7-9, 1988.
Yamguchi et al, "Fuzzy adaptive control with an associative memory system"; International Conference on Control '91, pp. 944-949, Mar. 25-28 1991.
Pagni Andrea
Poluzzi Rinaldo
Rizzotto Gianguido
Nafiz Tariq R.
SGS--Thomson Microelectronics S.r.l.
LandOfFree
Fuzzy logic electronic controller and associated method for sett does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fuzzy logic electronic controller and associated method for sett, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuzzy logic electronic controller and associated method for sett will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-42499