多学科优化理论的水面无人艇综合性能优化设计分析
毕业论文关键词：水面无人艇（USV） ；小水线面双体船；航行性能；优化设计；数值仿真计算
Abstract Surface USV (unmanned surface vessel, called USV), is a new type of intelligent unmanned surface vessels platform. It is mainly used in place of humans to perform some dangerous or humans can not complete the task, such as military reconnaissance, search, survey and clearance; anti-submarine combat, as well as conventional anti-special forces combat patrol, combating piracy, and terrorist forces; maritime search and rescue, marine navigation and hydro-geological monitoring and other military and military missions. USV Navigation Performance Fast is an important measure of its performance advantages and disadvantages, maneuverability and seakeeping performance as an important navigational safety of navigation and USV has a great economic impact, in order to ensure USV excellent sailing performance, USV performance optimization voyage is essential. In this paper, based on multidisciplinary optimization theory, choose SWATH as optimization, mainly for the following aspects of the work. (1) Through the Internet and relevant literature, collecting the development of SUV and SWATH design studies and optimization of the status quo all over the word, complete the opening report to the dissertation. (2) I selected a length of 89m SWATH as an object of study, determine the rapidity, maneuverability, seakeeping as sub-objective function navigation performance optimization design according to the structural characteristics of maneuverability SWATH,determined the design variables, objective function and constraints of them, and to the rapidity, maneuverability, seakeeping sub-optimization objective function is constructed in the form of weighted product overall objective function navigation performance optimization. (3) Drawing a profile of the ship based on the dimensions and coefficient from the best optimization algorithm, creat a three dimensional solid model of the ship CAD according to profie, then imported it into the numerical simulation software FINE / Marine carried a different draft resistance at different speeds calculation results show that SWATH’s good resistance at high performance. It is verified the reliability of the results optimization when compared the resistance value and the calculated optimization results, both errors in the controllable range. (4)It introduced several mainstream algorithm optimization principle, and focuses on the genetic algorithm optimization algorithm and the advantages and disadvantages. (5) In other ship-based optimizer to be alterd to adapt to the optimization of SWATH. Then calculating a lot of optimization, analyze, compare the advantages and disadvantages of genetic algorithm, chaotic algorithms, complex algorithms as well as their basic structure of layered hybrid algorithm, added layered, parallel strategies to improve the algorithm. Finally found the genetic algorithm optimization plus Complex herein is the best way for our ship.