ファジィスケジューリングの管加工・組立への応用

概要

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The combinatorial optimization of the sequence for pipe assembly was studied in order to mass-produce the pipe units efficiently using the branclrand-bound method in the previous report by the authors. As a result of the simulation, shortening of the total working hours and a reduction in the middle stock were achieved. However, two problems remained; it was difficult to get an optimization solution in the case of many combinations, and only the average value of each working process was taken. For the former problem, the tabu search algorithm has been introduced in addition to the branch-and-bound method, and the revised process of the production has been proposed as a simulation using this algorithm. For the latter problem, the technique of fuzzy scheduling has been adopted to take into account the variation in working time for each process and in the resulting delivery time. The period for each work has been formalized using the fuzziness, and the reliability of the completion period has been calculated for the current process and the improved process mentioned above. As a result, the proposed process that was calculated by the optimization programhas been evaluated as having high reliability compared to the current process. According to this study, it is considered that these; optimization techniques and the evaluation method of reliability using the fuzzy scheduling technique are quite effective.
社団法人日本船舶海洋工学会の論文