Study on the Unusual Manoeuvring Characteristics of Full-Bodied Ships (2nd Report) : On the Results of Full-Scale Trial and the Control of the Ship

DOI Web Site

Bibliographic Information

Other Title
  • 肥大船の特異な操縦性能に関する研究 : 第二報 実船の性能とその制御
  • 肥大船の特異な操縦性能に関する研究-2-実船の性能とその制御
  • ヒダイセン ノ トクイ ナ ソウジュウ セイノウ ニカンスルケンキュウ 2 ジ

Search this article

Abstract

In the first report, the unusual phenomena appeared on two full-bodied ship models are investigated. In this report, the unusual phenomenon appeared on a real ship is analyzed and the countermeasures of the phenomenon are discussed from the view point of control. The ship is the real ship whose model was treated in the first report. The main conclusions obtained in this report are as follows: (1) The manoeuvring characteristics of the full-loaded ship is initially unstable and besides overlapped by an unusual phenomenon. (2) The real ship is less stable than her model ship. The fundamental features of the unusual phenomena are equal but the behaviours are slightly different between the ship and her model. (3) The response equation of manoeuvre proposed in this report can simulate the ship motion fairly well. (4) In the consideration of the auto-piloting system of unstable ship with unusual phenomenon, cares should be taken not only to the stability of the system, but also to the unusual phenomenon. (5) The nonlinear control method of auto-pilot, proposed in this report, is effective and promising for ships with unusual phenomena. (6) The smaller the L/V of a ship with unusual phenomenon is, the more difficult can a human operator keep the course. Therefore in smaller or faster ships, designers should pay possible attentions to avoid the unusual phenomena.

Journal

Details 詳細情報について

Report a problem

Back to top