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Numerical investigation of T-Foil hybrid control strategy for ship motion reduction in head seas
Jiang YC(姜宜辰)1; Bai, Junyu1; Sun Y(孙原)2; Sun, Yifang1; Zong Z(宗智)1
Department海洋信息技术装备中心
Source PublicationOcean Engineering
ISSN0029-8018
2020
Volume217Pages:1-15
Indexed ByEI
EI Accession number20203909225829
Contribution Rank2
Funding OrganizationQingdao National Laboratory for Marine Science and Technology (QNLM2016ORP0402) ; National Natural Science Foundation of China (Grant No. 51639003, 51279030) ; Fundamental Research Funds for the Central Universities (DUT2017TB05).
KeywordT-foil Ride control system Control strategies Head seas Slender body theory
Abstract

An active control T-foil can significantly reduce the vertical motions of high-speed ships. In this paper, a hybrid control method is proposed to control the T-foil. The reduction effects of the method, along with passive, linear and step controls, are numerically investigated. A numerical model is introduced firstly. Then the numerical predictions are compared with experimental measurements to validate the numerical model. Finally, the heave, pitch and local acceleration of the Wigley model III are predicted under four control strategies at two forward speeds (Fr = 0.3, 0.5). Based on the percentage reduction of vertical motions, the local velocity signal performs better than the pitch velocity signal. The reduction effect of the linear control is critical when the encounter frequency is high but limited when the encounter frequency becomes lower. The step control has the best effect at Fr = 0.3, but it aggravates the vertical motions in some cases at Fr = 0.5. The hybrid control offers the advantages of both linear and step controls and significantly reduces the vertical motions. The performance of the method is dominated by a parameter, CI, which makes the strategy take effect more stable and fit diverse sea conditions.

Language英语
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/27717
Collection海洋信息技术装备中心
Corresponding AuthorZong Z(宗智)
Affiliation1.School of Naval Architecture, Dalian University of Technology, Dalian, Liaoning 116024, China
2.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China
Recommended Citation
GB/T 7714
Jiang YC,Bai, Junyu,Sun Y,et al. Numerical investigation of T-Foil hybrid control strategy for ship motion reduction in head seas[J]. Ocean Engineering,2020,217:1-15.
APA Jiang YC,Bai, Junyu,Sun Y,Sun, Yifang,&Zong Z.(2020).Numerical investigation of T-Foil hybrid control strategy for ship motion reduction in head seas.Ocean Engineering,217,1-15.
MLA Jiang YC,et al."Numerical investigation of T-Foil hybrid control strategy for ship motion reduction in head seas".Ocean Engineering 217(2020):1-15.
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