Research On Aircraft Formation Control And Time-space Cooperative Guidance Method

Aircraft formation and cooperative guidance is an important means to improve the systematic information combat capability.For multi aircraft formation,this paper mainly studies three aspects: formation assembly and formation control in the flight phase,the multi-target assignment in the transition phase and cooperative terminal guidance in the cooperative attack phase.Aiming at the formation control of aircraft formation,a distributed control method considering the dynamic characteristics of aircraft is designed.The formation control problem is transformed into the maneuvering target following problem,according to the sliding mode variable structure control theory,the sliding mode surface and reaching law for tracking target are designed,the corresponding lateral guidance law is derived,the sign function in the guidance law is replaced by a continuous function to "eliminate chattering",and the stability of the sliding mode guidance law is proved.In order to realize cruise guidance,the constant high speed guidance law is designed through error feedback control,and the attack angle and pitch angle commands are obtained.Through the command of attack angle and pitch angle,the total aircraft overload is obtained as the energy index of formation target position allocation,and each aircraft is allocated to each target position.The simulation results show that the control method can realize the autonomous networking and formation reconfiguration of distributed formation.A target assignment method based on discrete particle swarm optimization(DPSO)is proposed for the aircraft target assignment problem in the transition phase.According to the damage efficiency、penetration probability of the aircraft to the target、the value weight of the target and the cost index of the aircraft itself,a complete target assignment model is established,and the particle swarm optimization algorithm is designed to solve the target assignment problem.The simulation results show that the algorithm can get the optimal solution quickly and accurately,and get the optimal allocation scheme of the comprehensive efficiency index.Aiming at the problem of multiaircraft cooperative guidance,a cooperative terminal guidance method considering detection factors is proposed.According to the motion model of the aircraft,the optimal guidance law satisfying the terminal position,angle and time is derived.According to the double-line-sight detection model,the relationship between the separation angle of sight between aircrafts and the relative distance error between aircrafts and targets is derived as the basis of improving the detection accuracy.A cooperative guidance law is designed based on the double-layer cooperative guidance framework,which can adjust the waiting time and the expected incidence azimuth on line.The simulation results show that the guidance law can realize the simultaneous attack of multiple aircrafts with smaller detection error.In this paper,the formation control,target assignment and cooperative guidance are studied.The research is closely combined with practice,which has a certain reference significance for the development of new aircrafts in the future.