摘要
为解决多约束下制导炮弹的精确制导问题,采用带有相对距离权函数的最优滑模末制导律,将权函数引入到最优制导律中,通过改变制导炮弹的运动轨迹、运动时间,进而增强制导精度。针对单权函数难以同时满足制导精度与导引头视线角、过载等约束的问题,采用不同权函数的分段加权方法解决加权最优末制导引起的制导问题。结合滑模变结构控制理论,设计分段加权最优滑模末制导律,增强制导系统的抗干扰能力。仿真验证结果表明,该末制导律既能解决过载、导引头视线角、落角等多约束情况下的精确制导问题,同时又具有一定的鲁棒性。
To solve the problem of precise guidance of guided missile(GM)under multi-constraint,the optimal sliding mode guidance law with relative distance weight function was applied.The weight function was introduced to the optimal guidance law.The guidance precision can be improved by changing the motion trajectory and motion time of GM.The single weight function is difficult to satisfy the guidance accuracy,the constraint of line-of-sight angle of seeker and overload constraint.The piecewise weighting method of the function was applied to solve the guidance problem caused by weighted optimal guidance.Combined with the sliding mode variable-structure control theory,the segmented weighted optimal sliding-mode guidance law was designed to enhance the anti-interference ability of guidance system.The simulation result shows that the terminal guidance law can solve the problem of accurate guidance under multi-constraint conditions such as overload,seeker line-of-sight angle and falling angle,and it has certain robustness.
作者
李宏宇
王旭刚
华思雨
LI Hongyu;WANG Xugang;HUA Siyu(School of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)
出处
《弹道学报》
EI
CSCD
北大核心
2019年第1期50-55,共6页
Journal of Ballistics
关键词
滑模制导律
最优制导律
多约束
末制导
权函数
sliding mode guidance law
optimal guidance law
multiple-constraints
terminal guidance
weight function
