Fuzzy rule-based system formed in a chip

专利名称：Fuzzy rule-based system formed in a chip发明人：Yamamoto, Akiyasu, c/o Intellectual Prop.

Div.,Arafune, Takeo, c/o Intellectual Prop.Div.,Ishii, Tadatoshi, c/o Intellectual Prop.Div.,Kitamura, Tetsuya, c/o Intellectual Prop.Div.,Shirasuna, Toshiaki, c/o Intellectual Prop.Div.,Sekizawa, Yuichi, c/o Intellectual Prop.Div.

申请号：EP92109118.7申请日：19920529公开号：EP0516161A2公开日：19921202

专利附图：

摘要：A one-chip fuzzy processing apparatus is constituted by integrating a gradecalculation circuit (21) for obtaining the grades of IF part membership functionscorresponding to a variable value, a THEN part membership function generator (21, 22)for generating THEN part membership functions, a combining circuit (25, 26, 28) formodifying the THEN part membership functions, and combining the modified

membership functions, and a defuzzify circuit (17, 36) for defuzzifying the output fromthe combining circuit. The combining circuit includes a circuit (25) for obtaining a minimumvalue of grades of the IF part membership functions for each fuzzy rule, a circuit (26) forcomparing an obtained minimum value with a THEN part membership function for eachfuzzy rule to cut a peak of the THEN part membership function, and a maximumprocessor (28) for combining the THEN part membership functions by obtaining amaximum value of the modified THEN part membership functions. The defuzzify circuit(17, 36) includes a circuit for obtaining a center of gravity of the membership functioncombined by the combining circuit (25, 26, 28). The THEN part membership functiongenerator is constituted by a counter (22), and a circuit (21) for sequentially outputting

the grades of the THEN part membership functions using the count values from thecounter (22) as x-coordinate values.

申请人：KABUSHIKI KAISHA TOSHIBA

地址：72, Horikawa-cho, Saiwai-ku Kawasaki-shi, Kanagawa-ken 210 JP

国籍：JP

代理机构：Henkel, Feiler, Hänzel & Partner

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