Non-linear controlled motion of Resonance-Free SWATH using small underwater fins in waves

波浪中 Resonance-Free SWATH 運動の水中翼による非線形制御

A Resonance-Free SWATH (RFS), which has negative restoring forces, is introduced to minimize the motion responses in waves because the strict time-punctuality and the high value of the cargo require the superior seaworthiness such as no speed reduction and no slamming. Accordingly, the attitude of RFS should be adjusted by small underwater control fins. The latent ability of RFS for seaworthiness is not completely made use in the case of PD control because P gain in PD control acts as the large restoring force. In this study, a nonlinear sliding mode control has been applied to make up for deficiencies in PD control. The simulation using the time domain simulator for the sliding mode control and the experiments using the model have been carried out. As a result, the effectiveness of the sliding mode control has been confirmed. The pitch motion response of RFS under the sliding mode control is decreased by half compared with PD control.

• Record URL:
  https://doi.org/10.2534/jjasnaoe.22.119
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=Non-linear+controlled+motion+of+Resonance-Free+SWATH+using+small+underwater+fins+in+waves&author=M.+Yoshida&author=H.+Kajiwara&author=M.+kanda&publication_year=2015
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/18803717
• Authors:
  • Yoshida, Motoki
  • Kajiwara, Hiroyuki
  • kanda, Masamitsu
• Publication Date: 2015

Language

• English
• Japanese

Media Info

• Media Type: Digital/other
• Features: Appendices; Figures; References; Tables;
• Pagination: pp 119-128
• Serial:
  • Journal of the Japan Society of Naval Architects and Ocean Engineers
  • Volume: 22
  • Issue Number: 0
  • Publisher: Japan Society of Naval Architects and Ocean Engineers
  • ISSN: 1880-3717
  • EISSN: 1881-1760
  • Serial URL: https://www.jstage.jst.go.jp/browse/jjasnaoe/-char/en
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Ocean waves; Pitch (Dynamics); Seaworthiness; Ship motion; Ship structural components; Ships; Simulation
• Subject Areas: Design; Hydraulics and Hydrology; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 01594680
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: Mar 30 2016 9:46AM