基于自适应反演滑模的末制导律设计

针对三维导弹-目标相对运动模型,结合反演控制、滑模控制和自适应技术,设计了一种新的自适应反演滑模末制导律。针对目标机动加速度上界难以获取的问题,将目标机动加速度视作模型的干扰,设计了一种自适应律对其进行在线估计,并将估计值补偿到制导律中。运用李亚普诺夫稳定性理论证明了系统的全局渐进稳定性和误差的收敛性。仿真结果证明了所设计的自适应反演滑模末制导律对机动目标的鲁棒性和有效性。

Guidance law design based on adaptive backstepping sliding mode control

Based on backstepping design,adaptive control and sliding mode control,a new adaptive backstepping sliding mode controller was designed for the case of a three-dimensional interception.To confirm the upper bound of uncertainties in sliding-mode control system,considering the maneuvering acceleration of targets as a disturbance.An adaptive law was designed to estimate the value of upper bound in real-time,and its stability and error convergence were testified based on the Lyapunov theorem.Simulation results show that the adaptive backstepping sliding mode law is effective.