随机最优控制在火箭弹滑翔控制中的应用

Application of stochastic optimal control in rockets gliding control

针对远程制导火箭弹滑翔飞行过程中弹道具有随机性且伴随着较严重的时变非线性问题,为了克服各种扰动因素的影响,提高弹道控制效果,基于随机非线性系统最优控制理论,研究了最优控制算法,推导了最优控制状态方程,设计了一种最优滑翔控制器。通过对气动参数摄动情况下的滑翔弹道控制过程的仿真,验证了该最优滑翔控制器的有效性。

During the gliding flight,the long-range guided rocket is characterized by the random trajectory and accompanied with serious problems of nonlinear time-varying.Based on the optimal control theory for stochastic nonlinear system and with the application of an optimal control law for gliding segment of rocket,an optimal control state equation is derived.An optimal gliding controller based on the theory of optimal control for stochastic systems is proposed to overcome the influence of various disturbance factors and to improve the control effect.The proposed controller is applied in the simulation of control process of gliding trajectory under aerodynamic parameters perturbation case.The simulation results demonstrate the efficiency of the controller.