A Preliminary Study On The Design Of An USV Capable Ofcarrying An UAV

China has a vast territory and many islands,so it is inconvenient to patrol and manage those islands.The surface unmanned boats can design different functional type of boats and carry mission modules to perform different types of tasks according to different mission requirements.Therefore,it is particularly significant to develop and design an USV for offshore and island patrolling.Moreover,the USV has new functions of artificial intelligence,such as autonomous planning and navigation,environmental monitoring and its own status monitoring,and integrates professional technologies,such as boat design,intelligent navigation,data processing and remote monitoring.As the unmanned aerial vehicle is agile and takes short time from takeoff to landing,it can use the high-definition camera to take aerial photos of the patrol area and complete the patrol of a large area in a short time,which is of great significance for the search and rescue work in a race against time.Therefore,this paper designs and produces a middle experimental boat that can carry UAV.The main research results are as follows:Firstly,the selection and analysis of the high performance ship type evaluation method based on fuzzy mathematics is carried out for the USV that can carry UAV.Through the preliminary design analysis,the catamaran ship type with SWATH is determined.At the same time,the preliminary design of the target USV is also carried out,including the determination of main dimensions,shape line design,appearance design and general layout design.Secondly,according to the parent ship transformation method,the demonstration and design analysis of the USV that can carry the UAV based on the optimal performance and function are carried out,the model of typical intermediate test boat is made,and the model propulsion system,control system and control system equipment are installed and adjusted,and the UAV landing control scheme is discussed.At the same time,a set of intelligent control system based on PAC is designed,and the reliability of the system is verified in the test.Then the reliability of the performance of the USV is verified by the test of the rapidity,gyrability,hydrostatic transverse and pitching and system identification of the unmanned boat.According to the test data,the performance of the boat can meet the performance requirements of the USV that can carry the UAV.At last,the mathematical modeling of the wind,wave and current in the environment is carried out,the intelligent navigation and dynamic positioning scheme is analyzed,and the program scheme of the intelligent navigation and dynamic positioning is designed,the track is planned by the shore machine,and the USV is finally positioned in the expected position.After completing the dynamic positioning experiment,the UAV’s patrol take-off and landing test was carried out,and the test phenomenon fully verified the reliability of the function of the USV that can carry the UAV.Through the function test of the USV which can carry the UAV,the design indexes are verified.The results show that the effectiveness of the designed intermediate test boat meets the expectation,and it can be used for dynamic positioning,UAV carrying and patrolling,and can be used for coastal and island patrolling.It greatly improves the patrol efficiency and provides the theoretical and experimental basis for the practical application of this type of USV that can carry UAV in the future.