Study on Spectral Analysis of Non-linear and Non-stationary Ship Motion Data
| Project/Area Number |
20560744
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Naval and maritime engineering
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| Research Institution | Tokyo University of Marine Science and Technology |
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Principal Investigator |
ISEKI Toshio Tokyo University of Marine Science and Technology, 海洋工学部, 教授 (70212959)
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| Research Collaborator |
ULRIK Dam Nielsen デンマーク工科大学, 機械工学科, 准教授
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 高次スペクトル解析 / 非線形・非定常船体運動 / 時変係数自己回帰モデル / 瞬間スペクトル解析 / パラメトリック横揺れ / バイスペクトル解析 / トライスペクトル解析 / 非線形船動揺 / 自航模型船 / 瞬間高次スペクトル解析 / 瞬間バイスペクトル解析法 / 非線形船体動揺 / 非線形復原力変動 / 実船動揺計測 |
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| Research Abstract |
In this study, the real-time algorithm of higher order spectral analysis is proposed in order to investigate the non-linear and non-stationary ship motions. The algorithm is based on the time-varying vector auto-regressive modeling and can be considered as an extension of the instantaneous power spectral analysis. The analyzed results of the full scale ship motion data were presented at the domestic and international conferences and were highly regarded. Therefore, it can be recognized that the objectives of this study have been achieved.
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Report
(4 results)
Research Products
(27 results)
