Implemented Circuits of Fuzzy Inference Engine for Servo Control by using Decomposition of $\alpha$-Level Set

$\alpha$-레벨 집합 분해에 의한 서보제어용 퍼지추론 연산회로 구현

  • 홍정표 (부경대학교 기계공학과) ;
  • 홍순일 (부경대학교 전기제어계측공학과)
  • Published : 2005.02.01

Abstract

This paper presents hardware scheme of fuzzy inference engine, based on α-level set decomposition of fuzzy sets for fuzzy control of DC servo system. We propose a method which is directly converted to PWM actuating signal by a one body of fuzzy inference and defuzzification. The influence of quantity α-levels on input/output characteristics of fuzzy controller and output response of DC servo system is investigated. It is concluded that quantity α-cut 4 give a sufficient result for fuzzy control performance of DC servo system. The experimental results shows that the proposed hardware method is effective for practical applications of DC servo system.

Keywords

References

  1. Sang Yeal Lee and Hyung Suck Cho, 'A Fuzzy Controller an Aerology Simulator Using Phase Plane Method', IEEE Transactions on Control System the Technology, Vol. 9, No. 6, pp. 791-801, 2001 https://doi.org/10.1109/87.960342
  2. T. Yamakawa and T. Miki, 'The Current Mode Fuzzy Logic Integrated by the standard CMOS Process', IEEE, Trans. on Computer, Vol. C5-2, pp. 161-167, 1986 https://doi.org/10.1109/TC.1986.1676734
  3. Stamatis Bourasm, Manousos Kotronakis, 'Mixed Analog-Digital Fuzzy Logic Controller with Continuous- Amplitude Fuzzy Inference and Defuzzificaion', IEEE Transaction on Fuzzy System, Vol. 6, No. 2, pp. 205-215, 1998 https://doi.org/10.1109/91.669017
  4. 上原 'Analog/membership grade 變煥機能お 有するファヅイ推論 Engine', 情報處理學會 硏究報告, Vol. AI-60-4, 1996
  5. Shinq-Jen Wu and Chin-Teng Lim, 'Discrete-Time Fuzzy Controller Design : Global Concept Approach', IEEE Transaction on Fuzzy System, Vol. 10, No. 1, pp. 21-37, 2002 https://doi.org/10.1109/91.983276
  6. Emmanuel G. Collins, and M. F. Selekwa 'A Fuzzy Logic Approach to Design with Variance Constrains'. IEEE Transactions on Control System the Technology, Vol. 10, No. 1, pp. 32-42, 2002 https://doi.org/10.1109/87.974336