Level: Beginner
When developing coils, the electrical characteristics are designed using CAE or magnetic circuit simulation.
This design was carried out using JMP's experimental planning (Space Filling planning), model creation (Gaussian process model), and the simulator function of the JMP prediction profiler to optimize the process capability index (Cpk), aiming to reduce design time and achieve a high-quality product design through robust design.
However, when the factor range of the experimental design is wide, there may be few experimental points within the product specification range, which poses problems with estimation accuracy.
Therefore, in order to efficiently improve the estimation accuracy, we considered a two-stage design in which the optimal value is found over a wide range in the first stage, and in the second stage, the range is narrowed down to near the optimal value of the first stage to perform final optimization.
This method enabled us to obtain optimal design values with greater accuracy.
After gaining experience in device development process work at Toko Corporation, he became involved in simulation work such as large-scale analysis.
・External presentation examples
1. Kazuhiro Ito (Toko), Koichi Ida (Toko), Hiroko Ike (Toko), Masayuki Takahashi (Toko), Junhiro Kawase (Gifu Univ.), Tadashi Yamaguchi (Gifu Univ.), Daichi Kato (Gifu Univ.), Shota Tsukada (Gifu Univ.), Yoshinari Fukui (Japan Agency for Marine-Earth Science and Technology), Noriaki Nishikawa (Japan Agency for Marine-Earth Science and Technology), Development of coil loss reduction technology using large-scale numerical analysis, FY2015 Earth Simulator Industrial Strategy Utilization Program Results Report page.101-109 (20160331)
2. Junyo Kawase (Gifu University), Tadashi Yamaguchi (Gifu University), Kazuhiro Ito (Toko), Masayuki Takahashi (Toko), Hiroko Ike (Toko), Hiroji Mifune (Murata Manufacturing), Three-dimensional finite element analysis of solenoid coils randomly filled with magnetic powder, 2018 National Conference of the Institute of Electrical Engineers of Japan
3. Junyo Kawase (Gifu University), Tadashi Yamaguchi (Gifu University), Kazuhiro Ito (Toko), Masayuki Takahashi (Toko), Hiroko Ike (Toko), Yoji Mifune (Murata Manufacturing), Three-dimensional nonlinear finite element analysis of solenoid coils containing flat magnetic powder, 2019 National Conference of the Institute of Electrical Engineers of Japan
He currently works in the Mold Material Technology Development Department at Saitama Murata Manufacturing Co., Ltd., where he is involved in simulation work related to coil products.
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