1 / 1

Design of a Programmable Fuzzy Logic Controller in CMOS Technology

EDS IMAPS CS International Conference 2009. Design of a Programmable Fuzzy Logic Controller in CMOS Technology. Leonardo Mesquita 1 , Paloma Maria S. Rocha Rizol 2 Departament of Electrical Engineering, São Paulo State University UNESP. Abstract

timberly-richardson
Download Presentation

Design of a Programmable Fuzzy Logic Controller in CMOS Technology

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. EDS IMAPS CS International Conference 2009 Design of a Programmable Fuzzy Logic Controller in CMOS Technology Leonardo Mesquita1, Paloma Maria S. Rocha Rizol2 Departament of Electrical Engineering, São Paulo State University UNESP Abstract This paper presents the design a fuzzy logic controller’s constituent blocks developed in CMOS 0.35µm technology of AMS that operates in current mode. The operation of all modules was validated through SPICE simulation. The modules analyzed in this work are: (i) The fuzzifier is composed by a membership function circuit whose main feature is the possibility to program the type of membership function to be generated as well as the possibility to move it within the universe of discourse; (ii) The method of inference proposed in this work is based on Mamdani method and is composed of a minimum and maximum circuits; (iii) the defuzzifier circuit is based on the height method and is composed of the following blocks: scaling, addition and multiplication/division circuit. Table 1: Programming parameters to define the shape of the membership function. Fig. 4: (a) The triangular shape which several inclinations; (b) Displacement to the left side in membership function within existence interval. Fig. 1: Fuzzy Logic Controller. Fig. 5: (a) Min Circuit; (b) Result of simulation min circuit. Fig. 2: Diagram in blocks of the developed circuit. Fig. 6: (a) Max Circuit; (b) Result of simulation max circuit. Fig.3 : Membership Function Circuit. References Zadeh, L. A., Fuzzy sets, Information Sciences, 8, 1965, pp. 338-353. Klir, G. J. and Yuan, B., Fuzzy sets and fuzzy logic: theory and applications, Prentice Hall P T R, ISBN: 0-13-101171-5, 1995. Lee, C. C., Fuzzy logic in control systems: fuzzy logic controller – Part I, IEEE Transactions on Systems, Man, and Cybernetics, vol. 20, no. 2, March/April 1990, pp. 404-418. Lee, C. C., Fuzzy logic in control systems: fuzzy logic controller – Part II, IEEE Transactions on Systems, Man, and Cybernetics, vol. 20, no. 2, March/April 1990, pp. 419-435. Eichfeld, et. all., 12b General purpose fuzzy logic controller chip, IEEE Transactions on Fuzzy Systems, vol. 4, No. 4, November 1996, pp. 460-475. Azeem, M. et. all., Design and Fabrication of Basic Building Blocks For Analog Implementation of Programmable Fuzzy Logic Controller, IEEE Press, 2007. R. Amirkhanzadeh, A. Khoei and Kh. Hadidi, “Mixed-signal current-mode fuzzy logic controller ”, International Journal of Electronics and Communications, vol. 59, Issue 3, 9 June 2005, Pages 177-184. Sasaki, M. et all, Fuzzy Multiple input maximum ans minimum circuits in current mode and their analyses using bounded-difference equations, IEEE Trans. On computers, vol 39, No 6, June 1990, pp. 768-774. López-Martin, A. et all, Current-Mode Multiplier/Divider circuits based on the MOS translinear principle, Kluwer Academic Publishers. 28, 2001, pp. 265-278. Fig. 7: Multiplier-divider circuit. 1mesquita@feg.unesp.br 2paloma@feg.unesp.br

More Related