Multi-dimensional Taylor Network Optimal Control And Simulation Of Torpedo Running For Attacking Moving Target

Torpedoes are very important underwater weapons in modern warfare,having the advantages of self-propelling,strong concealment and great destructive power.The guidance and automatic control system of torpedoes are used to calculate trajectory,ensure that torpedo moves accurately according to the established trajectory and improve hit rate,so the research of torpedo guidance and control system is the key part of torpedo's research.This thesis presents the design scheme of torpedo controller for striking moving targets,and PID control,SMC(Sliding Mode Control)requiring accurate mechanism model and MTN(Multi-dimensional Taylor Network)control are used to design the controller.Combining the above three control methods in torpedo running control,a torpedo running simulation platform based on MATALB for striking moving targets is constructed.The main contents of this thesis include the following points:1.According to the principle of torpedo navigation mechanics,the torpedo's force,moment and hydrodynamic coefficients are analyzed theoretically,and the torpedo's non-linear and strong coupling six-degree-of-freedom motion equations are derived.On this basis,the torpedo simulation model is established.2.The existing torpedo guidance system are briefly introduced.The maneuvering model of the target ship is established,and the mathematical model of the wake field produced by the target ship running on the sea is studied.Based on this,the combined guidance strategy of wire guidance + wake guidance is selected to design the torpedo guidance system.This combined guidance strategy can effectively overcome the respective shortcomings of single guidance mode and synthesize their respective advantages.3.PID control,SMC and MTN control are used to design the torpedo navigation controller,and the parameters of the controller are optimized by the improved simplex method.Considering the coupling of three channels in the fixed depth gyro trajectory during wake homing,the coupling compensation is carried out to reduce the depth error of torpedo navigation in this trajectory.4.The ocean current disturbance model is built.Based on the above three controllers,the comparative effects of torpedoes against targets are studied under the conditions of target ship maneuvering,ocean current disturbance and model parameter variation.The miss distance of torpedo striking target ship is taken as the evaluation index of combat effectiveness.From the simulation results,it can be concluded that MTN control has the best control effect among the above three control methods.5.For the convenience of experimenting,the torpedo navigation simulation experiment platform is designed and developed by using the existing GUI of MATLAB.