Implemented Logic Circuits of Fuzzy Inference Engine for DC Servo Control Using decomposition of $\alpha$-level fuzzy set

$\alpha$-레벨 퍼지집합 분해에 의한 직류 서보제어용 퍼지추론 연산회로 구현

  • 이요섭 (부경대학교 전기공학과) ;
  • 손의식 (부경대학교 전기공학) ;
  • 홍순일 (부경대학교 전기제어계측 공학부)
  • Published : 2004.08.01


The purpose of study is development of a fuzzy controller which independent of a computer and its software for fuzzy control of servo system. This paper describes a method of approximate reasoning for fuzzy control of servo system, based on decomposition of $\alpha$-level fuzzy sets, It is propose that fuzzy logic algorithm is a body from fuzzy inference to defuzzificaion in cases where the output variable u directly is generated PWM. The effectiveness of quantified $\alpha$-levels on input/output characteristics of fuzzy controller and output response of DC servo system is investigated. It is concluded that $\alpha$-cut 4 levels 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.


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