一种基于变结构控制的鲁棒制导算法设计

A Robust Guidance Algorithm Design Using Variable Structure Control

针对平面拦截问题 ,选择导弹和目标之间的相对速度矢量与导弹 -目标视线之间的夹角 (称为相对航向误差角 )作为将要被控制到零的输出。将与目标运动的加速度和速度方位信息有关的量视为干扰量 ,基于变结构控制理论设计了一种鲁棒制导算法。该制导算法不需要得到目标精确的加速度和速度方位信息 ,因而更便于工程实现。仿真结果表明 。

For the case of planar interception, the so called relative heading error angle between the relative velocity vector and the LoS (Line of Sight) is chosen as the output to be controlled to zero. The terms related to the acceleration and velocity heading angle of target are regarded as disturbances, a robust guidance algorithm design is given by using the theory of variable structure control. The proposed guidance algorithm needs no accurate information on the acceleration and velocity heading angle of the target, and hence is more convenient for practical implementation. The simulation results show that the algorithm has strong robustness to the maneuvering of the target.