Research And Realization Of Distributed Ship Motion Simulation System

The ships sailing on the sea,for people,its safety and efficiency is the most important.In order to save time and transportation costs,people have been carrying out the research and exploration of ship maneuvering movement.The study of ship motion from the theoretical level is inseparable from the support of ship motion mathematical model.However,the mathematical model of ship motion is particularly complex.Therefore,the staff of researching and designing of the ship have to spend a lot of time to study the ship's mathematical model of movement.In view of this,we hope to use computer simulation technology to achieve a system of ship motion simulation,and use the system to help researchers more in-depth understanding and control of the ship's handling characteristics and movement characteristics,in this way to help researchers save the ship's or ship control system's R & D time and shorten the development cycle.This paper first analyzes and analyzes the function and structure of the distributed ship motion simulation system.Then,from the point of view of kinematics and dynamics,the mathematic model of ship motion and the mathematical model of wind wave interference are established,and then the controller is designed.Then,a distributed ship motion simulation system is designed and developed,and using this system to study shipboard maneuvering and control performance.The main work of the paper is as follows:(1)From the perspective of the actual development of the system,the system function,system structure and system operation flow of the distributed ship motion simulation system are studied.(2)From the point of view of kinematics and dynamics,the maneuvering motion mathematical model based on six degrees of freedom of the ship is established,Using Matlab/ Simulink language programming procedures,and converted to C + + code.The model was validated by simulation test.(3)Based on mathematical model of ship maneuvering motion and mathematical model of wind,wave and current disturbance,then design the ship movement heading controller.The system of distributed ship motion simulation system was developed by using C ++ language.The Windows-style menus,toolbars and windows are given in the simulation system to realize the visualization and dynamic demonstration of the calculation process.(4)Based on the established distributed ship motion simulation system,the rotary experiment and the Z-syllabing simulation experiment were carried out for a certain type ofship.Finally,the simulation results of ship heading control are carried out under the combined action of wind,wave and flow disturbance.The simulation results show that the distributed ship motion simulation system can realize the simulation and heading tracking of ship motion,Analysis and control algorithm design provides a good simulation platform.