基于反馈线性化的制导炮弹弹道控制系统设计

摘要

To improve the controlling performance of guided projectiles, the nonlinear trajectory control system is studied The nonlinear coupling system is modeled, and input-output feedback linearization is utilized to decouple the system to two subsystems in lengthwise and cross direction. To aim against the model uncertainty,a class of nonlinear robust controller combined feedbak linearization method and sliding mode technique is proposed. The 6 DOF trajectory simulation results indicade that the model and controller are feasible. And then the controller can track the expectant trajectory, aslo is robust to aerodynamic parameters perturbation, then it is propitious for improving the peformance of guided projectiles.%为提高制导炮弹的控制性能,研究了一种非线性弹道控制系统设计方法.建立了弹道控制系统模型,针对该模型的非线性、耦合和不确定性问题,利用反馈线性化方法将复杂的非线性系统进行解耦,结合滑模控制原理给出了一种非线性鲁棒控制器设计方法,并应用于制导炮弹的弹道跟踪控制器设计.制导炮弹六自由度仿真表明:该模型和控制器设计方法是可行的,能有效地控制制导炮弹按预期弹道飞行,具有良好的动态跟踪性能,并对气动参数摄动表现出鲁棒性,有利于提高制导炮弹的大空域作战能力.