针对机动目标的最优滑模制导律设计

Optimal Sliding Mode Guidance Law Design for Maneuvering Targets

基于最优控制理论推导出了一种具有落角约束的最优制导律。为了提高针对机动目标的控制精度和增强制导律的鲁棒性,参考滑模控制理论,设计了基于最优制导律的最优滑模制导律。针对制导律中难以测量的目标机动项,设计有限时间状态观测器对目标机动进行跟踪。仿真结果表明,该制导律能在满足落角约束的基础上,实现对机动目标的跟踪。

In modern warfare,there are practical engineering needs to study the multi-constraint guidance law for maneuvering targets.Firstly,based on the optimal control theory,an optimal guidance law with landing angle constraints is derived.In order to improve the control accuracy for maneuvering targets and enhance the robustness of the guidance law,referring to the sliding mode control theory,an optimal sliding mode guidance law based on the optimal guidance law is designed.Aiming at the target maneuvering items that are difficult to measure in the guidance law,a finite-time state observer is designed to track the maneuvering target.The simulation results show that the guidance law can track maneuvering targets on the basis of satisfying the angle of landing constraint.