Multiple Missiles Formation Flying Control

As a particularly aggressive type of weapon, missile plays an important role in recent wars. However, along with the constant perfection of the anti-missile system, missile will face greater threat and especially its penetration ability and survival ability will be vigorously challenged. Multiple missiles’ formation flying makes high-density and simultaneous penetration possible relying on spatial and temporal coordination to increase the difficulty of the intercept of the enemy defenses and to improve the operational effectiveness.In order to solve the problem of multiple missiles’ formation coordinated operation, the thesis mainly focus on the foundation of structure in which a missile is regarded as the leader and others are considered as followers and the design of formation controller. The main contents and results are as follows.Based on the ballistic coordinate system of the follower missile, the model of multiple missiles’ formation flying is built, then simplify and linearize the model, design the controller of formation by the PID theory, optimize the parameters of the PID controller of formation by genetic algorithm.Then, based on both the ballistic coordinate system of the leader missile and the line-of-sight coordinate system of the follower missile, the three dimensional relative motion model of leader and follower is built, considering both constraints of the state variables and limitation of the control variables, taking advantage of Gauss pseudo-spectral method, discuss the optimal control problem which satisfy the performance index. The performance index includes making the formation in the shortest time and making the formation by constraints of the state variables. Get the control instruction of the followers which meet the desired conditions, the simulation results show that the controller designed on Gauss pseudo-spectral method is effectively. Finally, considering the acceleration of the leader missile and the interferences of the followers as bounded interferences, build the model of missiles’ formation based on the line-of-sight coordinate system of the leader missile, design a missile formation controller which has strong robustness by using the sliding mode control theory, then verify the effectiveness of the controller by simulation experiments.