Reaserah On Control Method Of Barrel-Launched Small Cruise Missile

Cruise missile is a new type of intelligent ammunition which integrates UAV and ammunition technology and other high and new technologies,and can adapt to the information battlefield.Its operational effectiveness in the Nagorno-Karabakh conflict and the Russia-Ukraine war in recent years shows the huge potential of cruise missile in the modern unmanned war.High performance guidance and attitude control system is indispensable for cruise,reconnaissance and target attack of cruise missile in battlefield,This paper takes a barrel-launched small cruise missile as the research object,and mainly studies the BTT(tilt-turn)coordinated attitude control system,PID control and fuzzy attitude control methods,and verifies its system control performance through MATLAB simulation.Firstly,based on the coordinate system transformation relationship,a mathematical model of the space motion of the cruise missile is established by analysing the forces and moments,and given the cruise missile attitude control model;based on the structural parameters of the missile body,the aerodynamic parameters of the missile body are calculated by using FLUENT simulation.The linear simplification of the three-channel control model through reasonable assumptions is used to design the BTT coordinated attitude control system for patrol bombs.In the study of control methods,PID control and control methods based on fuzzy algorithms are mainly used.In the PID control method,a dual feedback attitude control loop is designed,and the inner loop is designed with series over-correction to improve the stability margin of the system;the outer loop uses a PID controller to adjust the system feedback control,which improves the dynamic performance of the control system;for the coupling factors generated by BTT control,a coordinated coupling compensation term is designed based on the coordinated control method,and the simulation verifies the dynamic performance of the BTT coordinated control system.Secondly,to address the problems of time-varying pneumatic parameters,model error uncertainty and PID control parameters not easy to adjust,design fuzzy PID controller,using fuzzy control algorithm to reduce the dependence of the control system on the accurate model of the controlled object,and realize the online adjustment of PID control parameters;Based on the idea of variable domain,the function-based input domain scaling factor and the fuzzy rule-based output domain scaling factor are optimally designed to achieve the scaling change of the domain with the error feedback,and combined with the fuzzy PID controller,the variable domain fuzzy PID attitude controller of the cruise missile is designed.The simulation verifies the system control and regulation ability under the action of three controllers.The variable domain fuzzy PID control has the fastest response and the strongest immunity,the fuzzy PID control system has the second fastest response and insufficient immunity,and the PID control system has weak adaptive ability.Finally,based on the target and guidance model,a six-degree-of-freedom motion simulation system is established for the cruise missile,and the final attitude control flight simulation of the patrol missile is verified through the missile body aerodynamic deflection.The simulation results show that the attitude control system has good tracking control performance for the guidance overload command,and can complete the corresponding target pursuit task according to the command,and the terminal trajectory inclination and off-target volume can meet the target strike requirements.