一种强鲁棒变结构制导设计

传统制导拦截模型可用一组方程来描述，由于该方程是耦合的，对其进行制导律的设计时，往往假定导弹在瞄准线方向不可控，但这样必然产生较大的模型误差。文中将传统制导方程进行变换得到其状态空间形式，根据导弹和目标各自加速度沿瞄准线(LOS)方向及其垂直方向的分量之间的物理关系对状态方程降维，然后通过引入有界参数变量，得到含有控制不确定性和外部干扰的描述形式，进而按照不确定系统变结构控制原理设计了制导律。由于制导律设计时考虑了导弹法向加速度分量的相关性、不同状态对拦截模型不确定性影响和外部干扰，所以具有强鲁棒特性.仿真结果表明这种制导律在合理参数选取下其抗目标机动能力强、脱靶量小、过载要求低、无控制抖动问题。

Enhanced Robust Guidance Using Variable Structure Control

The traditional guidance model which can be described with two coupling equations leads model error in missile guidance design process because of the assumption that the missile is uncontrollable at the line-of-sight(LOS) direction.In this paper,the traditional guidance model equations are transformed to the form of state equations at first.Then,the dimensions of the state equations are reduced for the physical relationship between acceleration components that is along and normal to the LOS and the new stat...