Research On Multi-missiles Cooperative Flight Guidance And Control Method

Walking from 20^th into the 21^st century,big strides have been made in military science and technology with the rapid development of advanced technology.For the foreseeable future,warfare form will have many new changes.One of the most important developing direction in missile combat is multi-missiles cooperative engagement.Multi-missiles cooperative combat can improve missile’s penetration capability,cooperative search ability and anti-interference ability.Meanwhile,it can make missile defense systems into saturation state.For multi-missiles cooperative combat,cooperative guidance and control technology is very important.In this paper,related problems of multi-missile cooperative guidance and control technology are studied.The details are as follows:1.Cooperative path planning algorithm for cruise missiles is conducted.Based on piecewise cubic Bezier curves,flyable path generation algorithm and cooperative path generation algorithm are designed,which can satisfy the constraints of available overload,obstacle avoidance,attack direction and flight time.In addition,the path generated by the proposed algorithm can also decrease the risk of path cross and make the joints between each path sections more smooth.2.Guidance and control system is designed for low altitude cruise missile’s path following problem.Firstly,based on the MIMO height and speed model,steady decoupling control law is used to design a controller which can control the missile flying at the predetermined height and speed.Secondly,the virtual point moving on the ideal path is introduced and a controller that can control missile tracking the ideal path is designed regarding the speed of the virtual point and the normal acceleration of missile as control variables.The stability of the designed controller is demonstraged based on lyapunov stability theory.Finally,robust attitude controller based on L1 adaptive control theory is designed which can make the missile track the command of angle of attack from height and speed control loop,the command of angle of bank from path following loop and the command of angle of sideslip required of yaw stability.3.Multi-missiles formation and reconfiguration technology is studied,which can ensure a smooth communication in the formation process.According to the characteristics of directional fixed antenna,communication-angle constraint model between the leader and the follower is established.Meanwhile,considering other constraints including the follower endpoint state,process state and anti-collision among missiles,followers’ideal paths are generated based on GPM.Finally,a 3D path following controller is designed to track the ideal paths,which can form and maintain the predetermined formation。...