抄録
Recently, the applications of fuzzy theory for electric appliances are increasing. A flexible thinking ways, which a human being has, can be described by fuzzy theory. At first, the summary of fuzzy theory is present in this study. Secondly, a consulting system for decision-making of cutting conditions in the beginner's lathe work is proposed. At this system, the professional knowledge of the skilled workers is expressed using membership functions and fuzzy control rules. And then, the estimated method described above is called "min-max-center of gravity method". Further in this system, membership functions and the result of this method are displayed on the computer's picture plane to understand visually the process of a decision regarding cutting conditions. By above-mentioned system, if a beginner inputs the value measured beforehand, he can instantly find out the cutting condition. In the last chapter, an example of utility using fuzzy theory is shown.
