A Calculation Method for fuzzy Control by $\alpha$-cut Decomposition and Its Hardware Implementation

\alpha$-레벨집합 분해에 의한 퍼지제어 추론계산법과 하드웨어에 관한 연구

In this paper, we propose a calculation method for fuzzy control based on quantized $\alpha$ -cut decomposition of fuzzy sets. This method is easy to be implemented in analog hardware. The effect of quantization levels on defuzzified fuzzy inference result is investigated. A few quantization levels are sufficient for fuzzy control. The hardware implementation of this calculation method and the defuzzificaion by gravity center method by PWM are also presented.