Abstract
Grinding process is frequently used to produce a smooth surface in the manufacturing system. Recently, for using a super-abrasive wheel economically, grinding system needs to measure the surface roughness. However, it is difficult to measure surface roughness in process because it takes a long time to measure it. We have to infer the surface roughness in process by online sensor information and evaluate the reliability of inferred surface roughness. We have proposed Recurrent Fuzzy Inference (RFI) for estimating it. But, RFI cannot evaluate the reliability of inferred surface roughness. In this paper, we evaluate the reliability of inferred surface roughness by the degree of fuzziness that shows the lack of difference between the fuzzy set and the fuzzy complement. We show the experimental result of inferring and evaluating the surface roughness in grinding process.
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