Advertisement

Hardware Implementation of Fuzzy Controllers-Approach and Constraints

  • Amol Deshmukh
  • Preeti Bajaj
  • A. G. Keskar
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4251)

Abstract

The design approaches & constraints for hardware implementation of fuzzy logic controllers are discussed here. The digital, analog & mixed analog domains are compared. Apart from these the Memory based approach & MFC based approach are discussed. Silicon area & operational speed are the major constraints for fuzzy controllers. Most hardware implementations of fuzzy controllers use piece-wise linear functions to represent membership functions. The existing analog approach for the design of fuzzy controllers offer parallel computing with lower hardware resources but they implement much lesser rules than the fully digital ones. Compared to its analog counterpart, the digital approach has greater flexibility, easier design automation, and good compatibility with other digital systems but they are more complex and need larger chip area. Analog approach can be faster & enough flexible to compete digital fuzzy approaches. Working with digital signal limits the application to low-speed problems due to sequential calculation of fuzzy logic quantities.

Keywords

Membership Function Fuzzy Logic Fuzzy System Fuzzy Rule Fuzzy Controller 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Yamakawa: A fuzzy inference engine in non-linear analog mode and its application to a fuzzy logic control. IEEE Trans. on Neural Networks 4(3), 496–522 (1993)CrossRefGoogle Scholar
  2. 2.
    Watanabe,, et al.: A VLSI fuzzy logic controller with reconfigurable, cascadable architecture. IEEE Journal of Solid State circuits 25(2), 376–382 (1990)CrossRefGoogle Scholar
  3. 3.
    Lago, E., Hinojosa, M.A., Jiménez, C.J., Barriga, A., Sánchez-Solano, S.: FPGA Implementation Of Fuzzy Controllers. In: XII Conference on Design of Circuits and Integrated Systems (DCIS 1997), Sevilla, November 18-21, pp. 715–720 (1997)Google Scholar
  4. 4.
    Jiménez, C.J., Sánchez Solano, S., Barriga, A.: Hardware Implementation Of A General Purpose Fuzzy Controller. In: Sixth International Fuzzy Systems Association World Congress (IFSA 1995), Sao Paulo - Brazil, July 21-28, vol. 2, pp. 185–188 (1995)Google Scholar
  5. 5.
    Barriga, A., et al.: Automatic Synthesis Of Fuzzy Logic Controller. Mathware & Soft Computing III(3), 425–434 (1996)Google Scholar
  6. 6.
    Guo, S., et al.: Design and Application of an Analog Fuzzy Logic Controller. IEEE Transactions on Fuzzy Systems 4(4), 429–438 (1996)CrossRefGoogle Scholar
  7. 7.
    Galán, D., Jiménez, C.J., Barriga, A., Sánchez Solano, S.: VHDL Package For Description Of Fuzzy Logic Controllers. In: European Design Automation Conference (EURO-VHDL 1995), Brighton - Great Britain, September 18-22, pp. 528–533 (1995)Google Scholar
  8. 8.
    Blake, J.J., et al.: The Implementation of Fuzzy systems, Neural Networks & Fuzzy Neural Networks using FPGAs. Information Sciences 112, 151–168 (1998)CrossRefGoogle Scholar
  9. 9.
    Baturone, I., Sánchez Solano, S., Barriga, A., Huertas, J.L.: Optimization Of Adaptive Fuzzy Processor Design. In: XIII Conference on Design of Circuits and Integrated Systems (DCIS 1998), Madrid, November 17-20, pp. 316–321 (1998)Google Scholar
  10. 10.
    Cotta, C., Alba, E., Troya, J.M.: Evolutionary Design Of Fuzzy Logic Controllers. In: XIII Conference on Design of Circuits and Integrated Systems (DCIS 1998), Madrid, November 17-20, pp. 316–321 (1998)Google Scholar
  11. 11.
    Madrenas, J., Alarcón, E., Cosp, J., Moreno, J.M., Poveda, A., Cabestany, J.: Mixed-Signal VLSI for Neural and Fuzzy Sequential Processors. In: Proceedings of the 2000 IEEE International Symposium on Circuits and Systems - ISCAS 2000, Geneva, Switzerland (June 2000)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Amol Deshmukh
    • 1
  • Preeti Bajaj
    • 2
  • A. G. Keskar
    • 3
  1. 1.Asst.Professor & Research Associate, ETRX DeptG.H.Raisoni College of EngineeringNagpurIndia
  2. 2.Professor & Head, ETRX DeptG.H.Raisoni College of EngineeringNagpurIndia
  3. 3.Professor & Head, ETRX & CSE DeptVNITNagpurIndia

Personalised recommendations