Development of Dynamic Positioning System for Deep Sea Floating Structure

深海浮式结构动力定位系统研制

• 批准号: 04302038
• 负责人: KOTERAYAMA Wataru
• 金额: $ 6.59万
• 依托单位: Kyusyu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Co-operative Research (A)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04302038/
• 关键词: Floating structure; Slow drift oscillation; Thruster assited mooring; Dynamic Positioning & System; スラスターアシステッドムアリング; 制御設計; 長周期漂流力; 半潜水式海洋プラットホーム; 海洋保留; DPS; 潮流

A floating offshore platorm is useful to develop mineral resources in the ocean and a lot of platform are being operated. The directions for use requires that platforms keep the position under the external forces such as ocean current, wind or waves. Generally, mooring system or dynamic positioning system by thrusters are used to keep the potision. However, the former system can not prefectly prevent the slow drift oscillation. The latter system requires a lot of energy because the thrusters have to work continually against current or wind.In this paper, thruster assisted mooring system is adopted. In this system, mooring is used to keep the position against the external forcde by current and wind. The thrusters are used to prevent the slow drift oscillation. The it is expected that the energy to keep the position is remarkably reduced.Experiments and calculations to obtain hydrodynamic forces acting on a floating platform model were carried out and controller was designed. From the results of simulation of motions, it was verified that the energy is reduced.

浮式海洋平台是开发海洋矿产资源的一种有效手段，目前已有大量的浮式海洋平台投入使用。使用说明书要求平台在海流、风或波浪等外力作用下保持位置。通常采用锚泊系统或推进器动力定位系统来保持船舶的位置。然而，以往的系统不能很好地防止慢漂振荡。后一种系统由于推进器需要持续逆流或逆风工作，需要消耗大量的能量，本文采用推进器辅助系泊系统。在该系统中，系泊用于抵抗水流和风的外力而保持位置。推进器用于防止慢漂移振荡。通过实验和计算，获得了作用在浮式平台模型上的水动力，并设计了控制器。根据运动模拟的结果，验证了能量降低。

项目成果

C.Hu and Wataru Koterayama: "A Numerical Study on Hydrodynamic Forces acting on an Oscillating Circular Cylinder in Hrmonic Flow" Journal of The Society of Naval Architects of Japan. Vol.174. 205-210 (1993)

C.Hu 和 Wataru Koterayama：“对谐波流中振荡圆柱体作用的水动力的数值研究”日本造船学会杂志。

Masahiko Nakamura, Wataru Koterayama, Hiroyuki Kajiwara and tomohiro Mitamura: "Study on Dynamics of Thruster Assisted Mooring" 12th Ocean Engineering Symposium. 387-394 (1994)

Masahiko Nakamura、Wataru Koterayama、Hiroyuki Kajiwara 和 tomohiro Mitamura：“推进器辅助系泊动力学研究”第十二届海洋工程研讨会。

吉田 尚史、斎藤 公男: "浅水域の構造物に働く長周期波浪強制力について" 日本造船学会論文集. 174号. 429-437 (1993)

Naofumi Yoshida、Kimio Saito：“作用于浅水中结构的长周期波浪力”日本造船学会汇刊第 174. 429-437 (1993)。

Yusaku Kyozuka and Kazutoyo Yokoyama: "Assessment of Ocean Environment by an Airport in Ariake Bay" 12th Ocean Engineering Symposium. 485-492 (1994)

Yusaku Kyozuka 和 Kazutoyo Yokoyama：“有明湾机场海洋环境评估”第 12 届海洋工程研讨会。

中村 昌彦、小寺山 亘、梶原 宏之、三田村 友弘: "係留された浮遊式海洋構造物の位置保持システムに関する研究" 第12回海洋工学シンポジウム講演論文集. 387-394 (1994)

Masahiko Nakamura、Wataru Koderayama、Hiroyuki Kajiwara、Tomohiro Mitamura：“系泊浮动海洋结构的位置保持系统研究”第12届海洋工程研讨会论文集387-394（1994）。