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A new vertical instability predictor via precursor oscillation detection with performance monitoring of equilibrium controller
https://repo.qst.go.jp/records/86179
https://repo.qst.go.jp/records/86179361f5ea7-7b12-4413-9d4e-24eda9517a79
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2022-05-25 | |||||
| タイトル | ||||||
| タイトル | A new vertical instability predictor via precursor oscillation detection with performance monitoring of equilibrium controller | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Shizuo, Inoue
× Shizuo, Inoue× Yoshiaki, Miyata× Hajime, Urano× Takahiro, Suzuki× Shizuo, Inoue× Yoshiaki, Miyata× Hajime, Urano× Takahiro, Suzuki |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We first propose an accurate and robust vertical instability predictor by using a support vector machine (SVM), one of the machine learning methods. The predictor is trained to detect precursor oscillation by using newly introduced classification parameters to measure the equilibrium controller performance, which is obtained by the adaptive voltage allocation scheme (Inoue et al 2021 Nuclear Fusion 61 096009). Furthermore, multi-layered preprocessing filters are newly introduced for the SVM training/prediction, which improves the prediction accuracy under highly imbalanced conditions, where ∼500 disruptive data while ∼3 × 106 non-disruptive data. The classification parameters can be calculated only by the current centroid, which suggests that the proposed predictor is robust against the extrapolation for the experiment and will be validated in JT-60SA experiments. | |||||
| 書誌情報 |
Nuclear Fusion 巻 62, p. 086007, 発行日 2022-05 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0029-5515 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1088/1741-4326/ac6c39 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://iopscience.iop.org/article/10.1088/1741-4326/ac6c39 | |||||
