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Micropower Fuzzy Linguistic-Hedges Circuit in Current-Mode Approach

Authors: E. Farshidi

Abstract:

In this paper, based on a novel synthesis, a set of new simplified circuit design to implement the linguistic-hedge operations for adjusting the fuzzy membership function set is presented. The circuits work in current-mode and employ floating-gate MOS (FGMOS) transistors that operate in weak inversion region. Compared to the other proposed circuits, these circuits feature severe reduction of the elements number, low supply voltage (0.7V), low power consumption (<200nW), immunity from body effect and wide input dynamic range (>60dB). In this paper, a set of fuzzy linguistic hedge circuits, including absolutely, very, much more, more, plus minus, more or less and slightly, has been implemented in 0.18 mm CMOS process. Simulation results by Hspice confirm the validity of the proposed design technique and show high performance of the circuits.

Keywords: Current-mode, Linguistic-Hedge, Fuzzy Logic, lowpower

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1074437

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References:


[1] L. A. Zadeh, "Fuzzy sets," Inform. Control, vol. 8, pp. 338-353, 1965.
[2] P. J. King and E. H. Mandani, "The application of fuzzy control systems to industrial processes," Automatica, vol. 13, no. 3, pp. 235-242, 1977.
[3] O. Itoh, K. Gotoh, T. Nakayama, and S. Takamizawa, "Application of fuzzy control to activated sludge process., " in Proc. 2nd IFSA Congress, Tokyo, Japan, pp. 282-285, 1987.
[4] S. K. Pal, R. A. King, and A. A. Hashim, "Image description and primitive extraction using fuzzy set., " IEEE Trans. Syst. Man. Cybern. 13(1), pp. 94-100, 1983.
[5] A. Kandel, Fuzzy Techniques in Pattern Recognition. New York: Wiley, 1982.
[6] J. C. Bezdek, Pattern Recognition with Fuzzy Objective Function Algorithms. New York: Plenum Press, 1981.
[7] H. J. Zimmermann, Fuzzy Sets, Decision Making, and Expert Systems. New York: Kluwer Academic, 1987.
[8] A. Kandel, Fuzzy Expert Systems. Boca Raton, FL: CRC Press, 1992.
[9] H. J. Zimmermann, Fuzzy Sets, Decision Making, and Expert Systems. New York: Kluwer Academic, 1987.
[10] A. Kandel, Fuzzy Expert Systems. Boca Raton, FL: CRC Press, 1992.
[11] L. A. Zadeh, "Outline of a new approach to the analysis of complex systems and decision processes," IEEE Trans. Syst. Man Cybern., vol. SMC-3, pp. 28-44, Jan. 1973.
[12] C. Y. Chen, Y. T. Hsieh, and B.D. Liu, "Circuit implementation of linguistic-hedge fuzzy logic controller in current-mode approach," IEEE Trans. Fuzzy Syst., vol. 11, no. 5, pp. 624-646, Oct. 2003.
[13] C. Y. Huang, C. Y. Chen, and B. D. Liu, "Current-mode fuzzy linguistic hedge circuits," Analog Integr. Circuits Signal Processing, vol. 19, no. 3, pp. 255-278, Jun. 1999.
[14] N. C. Ho and W. Wechler, "Extended hedge algebras and their application to fuzzy logic, " Fuzzy Sets Syst. 52(3), pp. 259-281, 1992.
[15] M. Mottaghi-kashtibal, A. Khoei, and K. Hadidi, "A Current-Mode First-Order Takagi-Sugeno-Kang Fuzzy Logic Controller, Supporting Rational Powewred Membership Functions," IEICE, Trans. Electron., vol. E90-C, pp. 1258-1266, Jun. 2007.
[16] C. A. D. L Cruz-Blas, A. J. Lopez-Martin, and A. Carlosena, "1.5v square-root domain second-order filter with on-chip tuning," IEEE Trans .Circuits Syst. I: Regular Paper, vol. 52, no. 10, pp. 1996-2006, Oct. 2005.
[17] E. Farshidi, "Low-Power Current-Mode Linguistic-Hedge Circuits for Fuzzy Logic Controllers," in Proceedings of the 2th IEEE Signals, Circuits and Systems International Conference, SCS-08, Hammamet, Tunisia, Nov. 2008.
[18] B. D. Liu and C. Y. Huang, "Array based fuzzy inference mechanism implemented with current-mode CMOS circuits, " in Proc. 1994 Int. Symp. Circuit and Syst. London, England,pp. 537-540, 1994.
[19] C. Y. Huang, C. J. Wang, and B. D. Liu, "Modular current mode multiple minimum circuit for fuzzy logic controllers," Electronic Letters, vol. 32, no. 12, pp. 1067-1069, June 1996.
[20] E. Farshidi, "Low-Power Current-Mode Defuzzifier for Fuzzy Logic Controllers," in Proceedings of the 2th IEEE Signals, Circuits and Systems International Conference, SCS-08, Hammamet, Tunisia, Nov. 2008.
[21] C. A. DE La Croz-Blas, A. J. Lopez-Martin and A. Carlosena, "1.2v 5 ╬╝W class-AB CMOS log-domain integrator with multidecade tuninig," IEEE.Trans. Circuits Syst.II, Analog Digit. Signal process, vol.52, no. 10, pp. 665-668, Oct. 2005.
[22] E. O. Rodriguez-Villegas and H. Barnes, "Solution to trapped charge in FGMOS transistors," Electron. Lett. , vol. 39, pp. 1416-1417, Sep. 2003.
[23] J. Ramirez-Angulo, G. Gonzalez-Atamirano, S. C. Choi, "Modeling multiple-Input floating gate transistors for analog signal processing," in IEEE Int. Symp. Circuits Syst., ISCAS-97, vol. 4, pp. 2020-2023, 1997.