Research On Guidance And Control Method Of Active Defense Small Space Vehicle

Ballistic missile plays an important role in the future war.With the improvement of missile technology,missile interception and anti-interception become one of the important research directions of missile.Many guidance laws have some problems such as poor robustness of system modeling error and sensit ivity to external interference and so on,which are difficult to implement in engineering.The mult imode adaptive estimator needs to assume that the guidance law and guidance parameters of the interceptor missile are selected in a finite set,which is limited by the number of filters.Due to the wide application of PN guidance law,this paper assumes that the enemy interceptor missile adopts this guidance law,but does not know its guidance parameters,and uses multi-model filter to identify and design the guidance law.Based on the guidance and control of the active defense aircraft,the relative motion model of the target aircraft,the interceptor missile and the active defense aircraft is established in this paper.The IMM filter and the Kalman are designed for the target aircraft and the active defense aircraft,considering the enemy interceptor missile as the proportional guidance law but the unknown parameters.The filter is used to obtain the motion information of interceptor,and 3 guidance laws based on the super twisting control method are designed.The performance of the designed filter and guidance law is tested and compared under the Monte Carlo simulation of the performance of the designed filter and guidance law,and three animation demos are made.In addition,in view of the attitude control problem of active defense aircraft,the attitude control law of variable structure is designed by using the attitude control system model described by the four element number,and the particle swarm optimization algorithm is used to optimize the parameters of the attitude control law,and the optimization results reduce the energy consumption of the attitude control system significantly.