On estimating a ship maneuverability based on closed-loop identification approach

Research Project

Project/Area Number	21656226
Research Category	Grant-in-Aid for Challenging Exploratory Research
Allocation Type	Single-year Grants
Research Field	Naval and maritime engineering
Research Institution	Kyushu University
Principal Investigator	KAJIWARA Hiroyuki 九州大学, 工学研究院, 教授 (30114862)
Co-Investigator(Renkei-kenkyūsha)	HAMADA Keita 九州大学, 大学院, 工学府修士課程
Project Period (FY)	2009 – 2011
Project Status	Completed (Fiscal Year 2011)
Budget Amount *help	¥3,450,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥150,000) Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000) Fiscal Year 2010: ¥2,300,000 (Direct Cost: ¥2,300,000) Fiscal Year 2009: ¥500,000 (Direct Cost: ¥500,000)
Keywords	操縦性能 / Z試験 / 潮流 / 閉ループ同定 / DPS / PID制御 / 推力配分 / 画像センサ
Research Abstract	The conventional method to estimate NOMOTO models for ships based on Zig-Zag maneuvers doesn't work very well under disturbances of current. In the research, we have tried to develop a new method based on closed loop identification which is applicable under disturbances. Using computer simulations, we have shown that NOMOTO models via the proposed method is superior as nominal models in control systems design to those via Zig-Zag maneuvers, although the latter can represent Zig-Zag maneuvers very well.