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RESEARCH ON AUTOMATIC NAVIGATION SYSTEM IN ROUGH SEA

汹涌海面自动导航系统研究

基本信息

批准号：
61850082
负责人：
NAITO SHIGERU
金额：
$ 3.2万
依托单位：
OSAKA UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1988
项目状态：
已结题

项目摘要

It is required for shipping companies to reduce the number of crews against high operation cost of ships. If high technology, super computer, remote sensing technique, new materials are fully applied to a ship for operating in the ocean, automatic ship cruising without crews will be realized.For this purpose, it is necessary to plan the system which can make a ship avoid the danger automatically in rough seags, for example in typhoon. When we focus our intention on the short time operation in very rough seas, mission of the first priority is that makes crews and cargoes safe. Some results of the studies are obtained. (1) We show the two ship operation systems which work when the ship runs in rough sea. They are named "Judge system on dangerous degree" and "Opoerating system to avoid danger". By making use of AI(Artificial Intelligence) procedure, the production rules are designed as the captain's knowledge based on his experiences. The production rules based on AI can be applied to the systems. (2) We make clear the effects of the accuracy of information with typhoon on the accuracy of estimating ship route, ship speed and fuel oil consumption etc. It needs for constructing the system to know the relationship among them. (3) The systems proposed in the study have good performance to avoid the danger for crews and cargoes in typhoon. (4) When the center of typhoon is far from the ship, the high accuracy of its information is not necassarily required to estimate the ship speed. The nearer the center of typhoon is to the ship, the more important the accuracy of its information is. (5) Since the proposed systems are only a concept, it needs to make a further investigation for realizing the ship operation without crews.

船舶运营成本高，要求航运公司减少船员数量。如果将高科技、超级计算机、遥感技术、新材料等技术充分应用于船舶在海洋中的航行，将实现船舶无人自动巡航，为此，需要设计一种能使船舶在台风等恶劣海况下自动避险的系统。当我们专注于在非常恶劣的海上进行短时间作业时，首要任务的使命是确保船员和货物的安全。得到了一些研究结果。(1)介绍了船舶在大风浪中航行时的两种船舶操纵系统。这两种制度分别称为“危险程度判断制度”和“操作避险制度”。利用人工智能过程，将产生式规则设计成船长基于经验的知识。基于人工智能的产生式规则可以应用到系统中。(2)明确了台风信息的准确性对船舶航线、船速、燃油消耗量等估算准确性的影响，了解它们之间的关系是系统建设的需要。(3)本研究所提出之系统具有良好之效能，可避免台风对船员及货物之危害。(4)当台风中心距离船舶较远时，对船速的估计不一定要求台风中心信息的高精度。台风中心离船舶越近，其信息的准确性就越重要。(5)由于所提出的系统只是一个概念，因此需要进一步研究如何实现船舶无人操作。