基于红外/毫米波复合制导律设计  

Compound Guidance Law Design Based on Infrared/Millimetre Wave Detection Information

作　　者：杨宇彬[1,2] 汤国建[1] 郭建国[3] 包为民 周军[3] 

机构地区：[1]国防科技大学航天与材料工程学院,长沙410073 [2]四川航天技术研究院总体部,成都610100 [3]西北工业大学精确制导与控制研究所,西安710072 [4]中国航天科技集团,北京100830

出　　处：《宇航学报》2011年第5期1035-1038,共4页Journal of Astronautics

基　　金：国家自然科学基金(10973048)

摘　　要：基于红外/毫米波复合导引系统,针对空地导弹攻击地面目标问题,提出了一种新的具有强鲁棒性的非线性末制导律。基于弹目相对运动学的非线性关系,以相对距离作为状态,同时将目标机动作为系统有界扰动,建立了弹目相对运动的数学模型。基于红外和毫米波复合导引系统获得的测量信息,采用滑动模态控制方法,以优化制导精度为目标,设计了一种自适应非线性变结构控制律。该方法利用Lyapunov稳定理论严格证明了制导闭环系统的全局渐近稳定性。数字仿真表明,这种制导律对地面运动目标具有很强的鲁棒性和适应性,并能获得良好的制导精度。For the case of air-to-surface missile with guidance system composed of infrared system and millimeter wave system against ground targets,a new design scheme of nonlinear terminal guidance law with robustness is proposed.An engagement model in the pitch plane is formulated,in which states are chosen as relative distance and relative velocity,by combining the relative relationship between missile and target,where the information is obtained directly from the infrared system and millimeter wave system.By adopting the sliding mode control,an adaptive nonlinear control law of the system is designed so that the missile can hit the target accurately with the index of optimizing the relative distance.The stability of the closed-loop system is also proven by utilizing the Lyapunov stability theory.Finally an illustrative example of attacking a ground target is given to confirm the usefulness of the proposed design scheme.

关 键 词：制导律 滑动模态 LYAPUNOV方法 稳定性 

分 类 号：TJ765[兵器科学与技术—武器系统与运用工程]