Minimum comparator for fuzzy microcontroller

Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

395900, 3401462, 364769, G06F 944, H03K 19017

Patent

active

054251311

ABSTRACT:
An arrangement (apparatus and method) using fuzzy logic controls a plurality of devices in response to inputs. The time-division-multiplexed input signals are demultiplexed and fuzzified according to predetermined fuzzy sets. The fuzzified input signals are input to an asynchronous multipath feedforward network which determines a minimum rule term for each rule processed. The multipath feedfoward network is dedicated to processes the fuzzified input signals in parallel and to determine the minimum rule term using a minimum amount of circuitry. Parallel processing of the fuzzified input signals is accomplished using a plurality of minimizing elements. Significant Bits of minimizing element output signals are successively compared in a NAND tree and a resulting output is fed back to the input of each minimizing element. Upon stabilization the resulting output is the minimum rule term.

REFERENCES:
patent: 5012430 (1991-04-01), Sakurai
patent: 5073867 (1991-12-01), Murphy et al.
patent: 5130578 (1992-07-01), Stone et al.
patent: 5185849 (1993-02-01), Miyazawa et al.
patent: 5227678 (1993-07-01), Han et al.
Sasaki et al., "Fuzzy Multiple-Input Maximum and Minimum Circuits in Current Mode and Their Analyses Using Bounded-Difference Equations," IEEE Trans. on Computers, Jun. 1990, 768-774.
Ruspini, "On the Semantics of Fuzzy Logic", International J. of Approximate Reasoning, vol. 5, Jan. 1991, pp. 45-88.
Mamdani, "Application of Fuzzy Algorithms for Control of Simple Dynamic Plant", Proceedings Institution of Electrical Engineers, London, vol. 121, No. 12, Dec. 1974, pp. 1585-1588.
Lee, "Fuzzy Logic in Control Systems: Fuzzy Logic Controller--Part I", IEEE Transactions on Systems, Man and Cybernetics, vol. 20, No. 2, Mar./Arp. 1990, pp. 404-418.
Devi et al, "Estimation of Fuzzy Memberships from Histograms", Information Sciences, vol. 35, 1985, pp. 43-59.
Braae et al, "Theoretical and Linguistic Aspects of the Fuzzy Logic Controller", Automatica, vol. 15, No. 5, 1979, pp. 553-577.
Zadeh, "Fuzzy Sets", Information and Control, vol. 8, 1965, pp. 338-353.
Tang, "Comparing Fuzzy Logic with Classical Controller Designs", IEEE Transactions on Systems, Man, and Cybernetics, vol. 17, No. 6, Nov./Dec. 1987 pp. 1085-1087.
Lee, "Fuzzy Logic in Control Systems: Fuzzy Logic Controller--Part II", IEEE Transactions on Systems, Man, and Cybernetics, vol. 20, No. 2 Mar./Apr. 1990, pp. 404-418.
Ralston et al, "Fuzzy Logic Control of Machining", Manufacturing Review, vol. 3, No. 3, Sep. 1990, pp. 147-154.
Lippmann, "An Introduction to Computing with Neural Nets", IEEE ASSP Magazine, Apr. 1987, pp. 4-21.
Zadeh, "Outline of a New Approach to the Analysis of Complex Systems and Decision Processes", vol. 3, No. 1, IEEE Transactions on Systems, Man, and Cybernetics, vol. 3, No. 1, Jan. 1973, pp. 28-44.
Kohoutek, "Practice of Approximate Reasoning", Proceedings of Manufacturing International '90, Atlanta, Ga., Mar. 25-28, 1990, vol. 5: Design, Reliability, and Education of Manufacturability, pp. 63-68.
Schwartz, "Fuzzy Tools for Expert Systems", AI Expert, vol. 6, No. 2, Feb. 1991, pp. 34-41.
Chiu et al, "A Fuzzy Logic Programming Environment for Real-Time Control", International Journal of Approximate Reasoning, 1988, pp. 163-175.
Watanabe et al, "A VLSI Fuzzy Logic Controller with Reconfigurable, Cascadable Architecture", IEEE Journal of Solid State Circuits, vol. 25, No. 2, Apr. 1990, pp. 376-382.
Zadeh, "Fuzzy Logic", Computer, Apr. 1988, pp. 83-93.
Togai et al, "Expert System on a Chip: An Engine for Real-Time Approximate Reasoning", IEEE Expert, Fall 1986, pp. 55-62.
Leung et al, "Fuzzy Concepts in Expert Systems", Computer, Sep. 1988, pp. 43-56.
Mizumoto et al, "Comparison of Fuzzy Reasoning Methods", Fuzzy Sets & Systems, 1982, vol. 8, pp. 253-283.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Minimum comparator for fuzzy microcontroller does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Minimum comparator for fuzzy microcontroller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Minimum comparator for fuzzy microcontroller will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1317255

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.