直交表による大域的最適解探索手法の開発 : ロバスト設計への適用

概要

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A new optimization method for the design of axial turbine stages is described, which can search for the global optimum solution and realize the robust design. In order to realize high efficiency in turbines, it is necessary not only to apply the latest technology to turbine apparatus, but also to optimize various design factors using conventional technology for the purpose of cost effectiveness. The feature of the new method include creating orthogonal arrays, changing the level values of design factors, and evaluating standard deviation of the objective function for every search step. The orthogonal array is selected based on the number of factors & levels, and the level values are changed based on the trend of the optimum solution. As a result of applying the method to the optimum design of turbine stages, it is shown that the method can search the global optimum solution and the tolerances of design factors greatly affect the robustness of turbine efficiency.
社団法人日本機械学会の論文
2006-08-25