拦截导弹自适应滑模制导律

针对平面拦截问题,提出了一种具有强鲁棒性的自适应滑模制导律。首先从一般意义上进行自适应控制律的推导,并给出了稳定性证明。该控制律可适用于系统存在有界外部干扰和结构摄动的情形。将拦截导弹的控制系统动态考虑到制导律的设计当中,进行了弹目相对运动关系的建模。该模型可适用于所推导的一般控制律结果,满足相应的非奇异条件。针对所推导的自适应滑模制导律,并进了数字仿真和分析。结果表明该制导律具有优良的弹道特性,可实现对连续高机动目标的有效拦截,同时具有较低的机动性能要求。

Adaptive Sliding-mode Guidance Law of Interception Missiles

For planar interception problem, an adaptive sliding-mode （ASM） guidance law with strong robustness is proposed. An general ASM control law is derived and the stability is proved. This control law can be applied to the system with bounded outside disturbance and structure perturbation. The relative motion relationsip model between interception missile and target is built with the consideration of control system dynamics of missile. This model satifys the nonsingular conditions of the adaptive control law and correspondingly the ASM guidance law is deduced. The simulation results show that this guidance law has strong robustness and good trajectory characteristics and can relaize interception of high maneuvering tin＇get with low manuvering requirement.