A Design Technology Study On Vehicle Type Of Unmanned Gliding-hydrofoil Craft

In recent years, USV(Unmanned Surface Vehicle) has got worldwide attention anddevelopment because its particular performance characteristics. But the study of USVfocused on modular function and intelligent study.In aspect of vehicle type design, methodsare mostly still traditional vehicle type design method. The design finished through repeatedselection, calculation and modification,not only the design cycle is long, and the designoften can not get the real optimal solution because its reliance on experience judgement. Inthis paper, based on5.8m gliding-hydrofoil craft as the foundation, the author discussed theoptimization design research of unmanned gliding-hydrofoil craft vehicle type usingmulti-objective optimization in view of the unmanned craft application, the main work is asfollows:First, in view of the unmanned craft application, based on5.8m gliding-hydrofoil craftas the foundation, the paper build hydrodynamic analysis mathematical models andnavigation performance comprehensive optimization objective function of unmannedgliding-hydrofoil craft through theoretical analysis and experimental data regression. Thenthe paper choose genetic algorithm and improved complex method and hierarchy parallelalgorithm as basic algorithm of optimization calculation in this paper through analysis ofoptimization algorithm. Based on the above algorithm, the paper build a variety ofhierarchical parallel composite algorithm. A navigation performance comprehensiveoptimization program is written in VC++language, which can optimize the rapidity andmanoeuvrability and seakeeping performance of unmanned gliding-hydrofoil craft at thesame time.The paper has done a large number of calculation to analyze the efficiency of thealgorithms using the comprehensive optimization program. Finally, the Parallel andhierarchical Complex Genetic Algorithm is chose as the final optimization algorithm in thispaper. After optimization calculation, the optimization result which has the bestcomprehensive navigation performance was got, such as:main dimensions, vehicle typeparameters, geometric and kinematic parameters of propulsion system and so on. In thispaper, the author discussed the influence of different index weights and different objectivefunctions.The author has designed and made a unmanned gliding-hydrofoil craft model by the optimization result, and has set up a control and measurement system using PAC as thecontrol center. And then navigation performance experiment of the unmannedgliding-hydrofoil craft model was designed and done.Genetic algorithm system identification method with least squares method was built byusing the theory of system identification. Unmanned gliding-hydrofoil craft motionmathematical model was established by identifying experiment data. The model can forecastthe navigation parameters and motion gesture of unmanned gliding-hydrofoil craft. Thesystem identification method used for studying navigation performance of unmannedgliding-hydrofoil craft was proved to be reliable by analyze the relative error betweenprediction and experimental values. The unmanned gliding-hydrofoil craft model wasproved to have a good navigation performance by analysis the identification mathematicalmodel, which also prove the method of optimization design of vehicle shape have a highreliability.The paper provided a new optimization design method of USV vehicle type design, andprovided an analysis method of navigation performance experiment of the unmannedgliding-hydrofoil craft model using system identification method. The above works canprovide a basic platform for USV prelminary design.