比較を活用した外乱適応型システムのHeuristicなモデル化工程について(機械要素,潤滑,設計,生産加工,生産システムなど)  [in Japanese] Noise-Adaptive System Modeling Procedure Based on the Heuristic Method Stimulated by Comparison(Machine Elements, Design and Manufacturing)  [in Japanese]

Validity in modeling systems depends on experiences of designers because validation processes have not been established. The authors propose a noise-adaptive system modeling procedure using a concept of Design Review Based on Failure Mode (DRBFM) as the validation process. The proposed procedure involves, (1) Detecting a difference by comparison between a design condition in an ideal model with that in practical one, (2) Setting Noise N_i caused by the difference, (3) Predicting an effect by the noise ε_i, (4) Inserting an additional element m(ε_i) in the model and (5) Checking whether other ε_i might exist. An experiment of modeling a robust model of a drain tube by university students using the proposed procedure or a normal process (FMEA) was conducted. Mean score of robustness of drains in a group using the proposed procedure was higher than that in the group using FMEA, which demonstrates the effectiveness of the proposed procedure.