摘要: |
This project aims to help securing shipping lanes as well as shipping in shallow-, narrow- and inaccessible waters by developing methods and demonstrators for autonomous bathymetry mapping of littoral waters. The project proposal is directly related to ongoing projects at KTH, Royal Institute of Technology in Stockholm, ( Autonomous hydrographic surveys in shallow water and Methodology for autonomous hydrographic surveys in shallow water), in which an initial study of the USV (Unmanned Surface Vehicle) demonstrator, and mapping algorithms for autonomous mapping in shallow water has been developed and successfully demonstrated for the Swedish Maritime Administration. One challenge with existing USV platforms is however their limited speed and range which makes it difficult to use the full potential of these small, simple and inexpensive robots. The size leads to a direct limitation in speed for displacement hulls. For higher speeds, resistance and thus energy consumption is drastically increased. This project proposal aims to further develop (by simulations and experiments) USV concepts for autonomous bathymetric mapping with increased speed, stability and energy efficiency by utilizing hydrofoil technology. Best-practices for placement of bathymetric sensors on hydrofoil constructions is also an important part of this work. With hydrofoils, energy consumption can be reduced in the order of 50-75 while good seakeeping and manoeuvrability can be achieved without significant speed reductions from waves (SNAME Technical Report R-51, 2000). The Centre for Naval Architecture at KTH has been working for several years on innovative hydrofoil concepts. Furthermore, the Centre for Naval Architecture have experience in development of advanced research demonstrator prototypes and marine robots. Within the group are also activities in development of simulation tools for advanced models of autonomous underwater vehicles financed by FMV. The laboratory for electric power and energy systems at KTH conducts research in electric machines, drives and power electronics. The laboratory is equipped with tools and instruments for constructing and evaluating the electric drivetrains proposed for the project in close proximity to the research groups working on related activities in the laboratory. The project is expected to contribute to technical and scientific development by virtue of the research groups' experience in firstly, development of hydrofoil concepts, demonstrators and simulation tools, and secondly by direct association with currently successfully operating projects in the same area. |