Real-time estimation of riser's deformed shape using inclinometers and Extended Kalman Filter

The real-time monitoring of underwater risers, cables, and mooring lines by multiple sensors is in great demand but still very challenging. In this study, a new real-time riser monitoring method based on an Extended Kalman Filter (EKF) is proposed. It estimates the overall shape of riser in real-time utilizing the measured signals from multiple bi-axial (inclination and heading) inclinometers along the riser. The novel EKF algorithm is shown to be robust against sensor noises and successfully reproduces the actual riser profiles at each time step, which has been verified by multiple tests through numerical simulations. For verification, a turret-moored FPSO (Floating Production Storage and Offloading) with a SCR (Steel Catenary Riser) is employed in four different random waves and currents. Subsequent algorithms are also developed so that the corresponding bending and axial stresses along the riser can also be estimated in real time from the obtained riser shape, which can further be used for the real-time estimation of fatigue-damage accumulation.

• Record URL:
  • https://doi.org/10.1016/j.marstruc.2021.102933
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0951833921000022
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09518339
• Supplemental Notes:
  • © 2021 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
• Authors:
  • Kim, HanSung
  • 0000-0002-6753-3173
  • Jin, Chungkuk
  • Kim, MooHyun
• Publication Date: 2021-5

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: 102933
• Serial:
  • Marine Structures
  • Volume: 77
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0951-8339
  • Serial URL: https://www.sciencedirect.com/journal/marine-structures

Subject/Index Terms

• TRT Terms: Deformation; Estimating; Floating structures; Inclinometers; Kalman filtering; Real time information; Riser pipe; Steel pipe; Structural health monitoring; Underwater pipelines
• Subject Areas: Hydraulics and Hydrology; Marine Transportation; Pipelines; Terminals and Facilities;

Filing Info

• Accession Number: 01772338
• Record Type: Publication
• Files: TRIS
• Created Date: May 25 2021 3:12PM